description: This is the easy version of the problem. The difference between the versions is that the easy version does not require you to output the numbers of the rods to be removed. You can make hacks only if all versions of the problem are solved.
  
  Stitch likes experimenting with different machines with his friend Sparky. Today they built another machine.
  
  The main element of this machine are n rods arranged along one straight line and numbered from 1 to n inclusive. Each of these rods must carry an electric charge quantitatively equal to either 1 or -1 (otherwise the machine will not work). Another condition for this machine to work is that the sign-variable sum of the charge on all rods must be zero.
  
  More formally, the rods can be represented as an array of n numbers characterizing the charge: either 1 or -1. Then the condition must hold: a_1 - a_2 + a_3 - a_4 + … = 0, or ∑_{i=1}^n (-1)^{i-1} ⋅ a_i = 0.
  
  Sparky charged all n rods with an electric current, but unfortunately it happened that the rods were not charged correctly (the sign-variable sum of the charge is not zero). The friends decided to leave only some of the rods in the machine. Sparky has q questions. In the ith question Sparky asks: if the machine consisted only of rods with numbers l_i to r_i inclusive, what minimal number of rods could be removed from the machine so that the sign-variable sum of charges on the remaining ones would be zero? Perhaps the friends got something wrong, and the sign-variable sum is already zero. In that case, you don't have to remove the rods at all.
  
  If the number of rods is zero, we will assume that the sign-variable sum of charges is zero, that is, we can always remove all rods.
  
  Help your friends and answer all of Sparky's questions!
  
  Input
  
  Each test contains multiple test cases.
  
  The first line contains one positive integer t (1 ≤ t ≤ 10^3), denoting the number of test cases. Description of the test cases follows.
  
  The first line of each test case contains two positive integers n and q (1 ≤ n, q ≤ 3 ⋅ 10^5) — the number of rods and the number of questions.
  
  The second line of each test case contains a non-empty string s of length n, where the charge of the i-th rod is 1 if s_i is the "+" symbol, or -1 if s_i is the "-" symbol.
  
  Each next line from the next q lines contains two positive integers l_i ans r_i (1 ≤ l_i ≤ r_i ≤ n) — numbers, describing Sparky's questions.
  
  It is guaranteed that the sum of n over all test cases does not exceed 3 ⋅ 10^5, and the sum of q over all test cases does not exceed 3 ⋅ 10^5.
  
  Output
  
  For each test case, print a single integer — the minimal number of rods that can be removed.
  
  Example
  
  Input
  
  
  3
  14 1
  +--++---++-++-
  1 14
  14 3
  +--++---+++---
  1 14
  6 12
  3 10
  4 10
  +-+-
  1 1
  1 2
  1 3
  1 4
  2 2
  2 3
  2 4
  3 3
  3 4
  4 4
  
  
  Output
  
  
  2
  2
  1
  0
  1
  2
  1
  2
  1
  2
  1
  1
  2
  1
  
  Note
  
  In the first test case for the first query you can remove the rods numbered 5 and 8, then the following set of rods will remain: +--+--++-++-. It is easy to see that here the sign-variable sum is zero.
  
  In the second test case:
  
    * For the first query, we can remove the rods numbered 1 and 11, then the following set of rods will remain: --++---++---. It is easy to see that here the sign-variable sum is zero. 
    * For the second query we can remove the rod numbered 9, then the following set of rods will remain: ---++-. It is easy to see that here the variable sum is zero. 
    * For the third query we can not remove the rods at all. 
solution: #Code by Sounak, IIESTS
  #------------------------------warmup----------------------------
  
  import os
  import sys
  import math
  from io import BytesIO, IOBase
  import io
  from fractions import Fraction
  import collections
  from itertools import permutations
  from collections import defaultdict
  from collections import deque
  from collections import Counter
  import threading
  
  #sys.setrecursionlimit(300000)
  #threading.stack_size(10**8)
  
  BUFSIZE = 8192
   
  class FastIO(IOBase):
      newlines = 0
   
      def __init__(self, file):
          self._fd = file.fileno()
          self.buffer = BytesIO()
          self.writable = "x" in file.mode or "r" not in file.mode
          self.write = self.buffer.write if self.writable else None
   
      def read(self):
          while True:
              b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
              if not b:
                  break
              ptr = self.buffer.tell()
              self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
          self.newlines = 0
          return self.buffer.read()
   
      def readline(self):
          while self.newlines == 0:
              b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
              self.newlines = b.count(b"\n") + (not b)
              ptr = self.buffer.tell()
              self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
          self.newlines -= 1
          return self.buffer.readline()
   
      def flush(self):
          if self.writable:
              os.write(self._fd, self.buffer.getvalue())
              self.buffer.truncate(0), self.buffer.seek(0)
   
   
  class IOWrapper(IOBase):
      def __init__(self, file):
          self.buffer = FastIO(file)
          self.flush = self.buffer.flush
          self.writable = self.buffer.writable
          self.write = lambda s: self.buffer.write(s.encode("ascii"))
          self.read = lambda: self.buffer.read().decode("ascii")
          self.readline = lambda: self.buffer.readline().decode("ascii")
   
   
  sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
  input = lambda: sys.stdin.readline().rstrip("\r\n")
  
  #-------------------game starts now-----------------------------------------------------
  #mod = 9223372036854775807  
  class SegmentTree:
      def __init__(self, data, default=0, func=lambda a, b: math.gcd(a,b)):
          """initialize the segment tree with data"""
          self._default = default
          self._func = func
          self._len = len(data)
          self._size = _size = 1 << (self._len - 1).bit_length()
   
          self.data = [default] * (2 * _size)
          self.data[_size:_size + self._len] = data
          for i in reversed(range(_size)):
              self.data[i] = func(self.data[i + i], self.data[i + i + 1])
   
      def __delitem__(self, idx):
          self[idx] = self._default
   
      def __getitem__(self, idx):
          return self.data[idx + self._size]
   
      def __setitem__(self, idx, value):
          idx += self._size
          self.data[idx] = value
          idx >>= 1
          while idx:
              self.data[idx] = self._func(self.data[2 * idx], self.data[2 * idx + 1])
              idx >>= 1
   
      def __len__(self):
          return self._len
   
      def query(self, start, stop):
          if start == stop:
              return self.__getitem__(start)
          stop += 1
          start += self._size
          stop += self._size
   
          res = self._default
          while start < stop:
              if start & 1:
                  res = self._func(res, self.data[start])
                  start += 1
              if stop & 1:
                  stop -= 1
                  res = self._func(res, self.data[stop])
              start >>= 1
              stop >>= 1
          return res
   
      def __repr__(self):
          return "SegmentTree({0})".format(self.data)
      
  class SegmentTree1:
      def __init__(self, data, default=0, func=lambda a, b: a+b):
          """initialize the segment tree with data"""
          self._default = default
          self._func = func
          self._len = len(data)
          self._size = _size = 1 << (self._len - 1).bit_length()
   
          self.data = [default] * (2 * _size)
          self.data[_size:_size + self._len] = data
          for i in reversed(range(_size)):
              self.data[i] = func(self.data[i + i], self.data[i + i + 1])
   
      def __delitem__(self, idx):
          self[idx] = self._default
   
      def __getitem__(self, idx):
          return self.data[idx + self._size]
   
      def __setitem__(self, idx, value):
          idx += self._size
          self.data[idx] = value
          idx >>= 1
          while idx:
              self.data[idx] = self._func(self.data[2 * idx], self.data[2 * idx + 1])
              idx >>= 1
   
      def __len__(self):
          return self._len
   
      def query(self, start, stop):
          if start == stop:
              return self.__getitem__(start)
          stop += 1
          start += self._size
          stop += self._size
   
          res = self._default
          while start < stop:
              if start & 1:
                  res = self._func(res, self.data[start])
                  start += 1
              if stop & 1:
                  stop -= 1
                  res = self._func(res, self.data[stop])
              start >>= 1
              stop >>= 1
          return res
   
      def __repr__(self):
          return "SegmentTree({0})".format(self.data)
      
  MOD=10**9+7
  class Factorial:
      def __init__(self, MOD):
          self.MOD = MOD
          self.factorials = [1, 1]
          self.invModulos = [0, 1]
          self.invFactorial_ = [1, 1]
   
      def calc(self, n):
          if n <= -1:
              print("Invalid argument to calculate n!")
              print("n must be non-negative value. But the argument was " + str(n))
              exit()
          if n < len(self.factorials):
              return self.factorials[n]
          nextArr = [0] * (n + 1 - len(self.factorials))
          initialI = len(self.factorials)
          prev = self.factorials[-1]
          m = self.MOD
          for i in range(initialI, n + 1):
              prev = nextArr[i - initialI] = prev * i % m
          self.factorials += nextArr
          return self.factorials[n]
   
      def inv(self, n):
          if n <= -1:
              print("Invalid argument to calculate n^(-1)")
              print("n must be non-negative value. But the argument was " + str(n))
              exit()
          p = self.MOD
          pi = n % p
          if pi < len(self.invModulos):
              return self.invModulos[pi]
          nextArr = [0] * (n + 1 - len(self.invModulos))
          initialI = len(self.invModulos)
          for i in range(initialI, min(p, n + 1)):
              next = -self.invModulos[p % i] * (p // i) % p
              self.invModulos.append(next)
          return self.invModulos[pi]
   
      def invFactorial(self, n):
          if n <= -1:
              print("Invalid argument to calculate (n^(-1))!")
              print("n must be non-negative value. But the argument was " + str(n))
              exit()
          if n < len(self.invFactorial_):
              return self.invFactorial_[n]
          self.inv(n)  # To make sure already calculated n^-1
          nextArr = [0] * (n + 1 - len(self.invFactorial_))
          initialI = len(self.invFactorial_)
          prev = self.invFactorial_[-1]
          p = self.MOD
          for i in range(initialI, n + 1):
              prev = nextArr[i - initialI] = (prev * self.invModulos[i % p]) % p
          self.invFactorial_ += nextArr
          return self.invFactorial_[n]
   
   
  class Combination:
      def __init__(self, MOD):
          self.MOD = MOD
          self.factorial = Factorial(MOD)
   
      def ncr(self, n, k):
          if k < 0 or n < k:
              return 0
          k = min(k, n - k)
          f = self.factorial
          return f.calc(n) * f.invFactorial(max(n - k, k)) * f.invFactorial(min(k, n - k)) % self.MOD
  mod=10**9+7
  omod=998244353
  #-------------------------------------------------------------------------
  prime = [True for i in range(11)] 
  prime[0]=prime[1]=False
  #pp=[0]*10
  def SieveOfEratosthenes(n=10):
      p = 2
      c=0
      while (p <= n): 
            
          if (prime[p] == True):
              c+=1
              for i in range(p, n+1, p): 
                  #pp[i]=1
                  prime[i] = False
          p += 1
  #-----------------------------------DSU--------------------------------------------------
  class DSU:
      def __init__(self, R, C):
          #R * C is the source, and isn't a grid square
          self.par = range(R*C + 1)
          self.rnk = [0] * (R*C + 1)
          self.sz = [1] * (R*C + 1)
  
      def find(self, x):
          if self.par[x] != x:
              self.par[x] = self.find(self.par[x])
          return self.par[x]
  
      def union(self, x, y):
          xr, yr = self.find(x), self.find(y)
          if xr == yr: return
          if self.rnk[xr] < self.rnk[yr]:
              xr, yr = yr, xr
          if self.rnk[xr] == self.rnk[yr]:
              self.rnk[xr] += 1
  
          self.par[yr] = xr
          self.sz[xr] += self.sz[yr]
  
      def size(self, x):
          return self.sz[self.find(x)]
  
      def top(self):
          # Size of component at ephemeral "source" node at index R*C,
          # minus 1 to not count the source itself in the size
          return self.size(len(self.sz) - 1) - 1
  #---------------------------------Lazy Segment Tree--------------------------------------
  # https://github.com/atcoder/ac-library/blob/master/atcoder/lazysegtree.hpp
  class LazySegTree:
      def __init__(self, _op, _e, _mapping, _composition, _id, v):
          def set(p, x):
              assert 0 <= p < _n
              p += _size
              for i in range(_log, 0, -1):
                  _push(p >> i)
              _d[p] = x
              for i in range(1, _log + 1):
                  _update(p >> i)
   
          def get(p):
              assert 0 <= p < _n
              p += _size
              for i in range(_log, 0, -1):
                  _push(p >> i)
              return _d[p]
   
          def prod(l, r):
              assert 0 <= l <= r <= _n
   
              if l == r:
                  return _e
   
              l += _size
              r += _size
   
              for i in range(_log, 0, -1):
                  if ((l >> i) << i) != l:
                      _push(l >> i)
                  if ((r >> i) << i) != r:
                      _push(r >> i)
   
              sml = _e
              smr = _e
              while l < r:
                  if l & 1:
                      sml = _op(sml, _d[l])
                      l += 1
                  if r & 1:
                      r -= 1
                      smr = _op(_d[r], smr)
                  l >>= 1
                  r >>= 1
   
              return _op(sml, smr)
   
          def apply(l, r, f):
              assert 0 <= l <= r <= _n
              if l == r:
                  return
   
              l += _size
              r += _size
   
              for i in range(_log, 0, -1):
                  if ((l >> i) << i) != l:
                      _push(l >> i)
                  if ((r >> i) << i) != r:
                      _push((r - 1) >> i)
   
              l2 = l
              r2 = r
              while l < r:
                  if l & 1:
                      _all_apply(l, f)
                      l += 1
                  if r & 1:
                      r -= 1
                      _all_apply(r, f)
                  l >>= 1
                  r >>= 1
              l = l2
              r = r2
   
              for i in range(1, _log + 1):
                  if ((l >> i) << i) != l:
                      _update(l >> i)
                  if ((r >> i) << i) != r:
                      _update((r - 1) >> i)
   
          def _update(k):
              _d[k] = _op(_d[2 * k], _d[2 * k + 1])
   
          def _all_apply(k, f):
              _d[k] = _mapping(f, _d[k])
              if k < _size:
                  _lz[k] = _composition(f, _lz[k])
   
          def _push(k):
              _all_apply(2 * k, _lz[k])
              _all_apply(2 * k + 1, _lz[k])
              _lz[k] = _id
   
          _n = len(v)
          _log = _n.bit_length()
          _size = 1 << _log
          _d = [_e] * (2 * _size)
          _lz = [_id] * _size
          for i in range(_n):
              _d[_size + i] = v[i]
          for i in range(_size - 1, 0, -1):
              _update(i)
   
          self.set = set
          self.get = get
          self.prod = prod
          self.apply = apply
   
   
  MIL = 1 << 20
   
   
  def makeNode(total, count):
      # Pack a pair into a float
      return (total * MIL) + count
   
   
  def getTotal(node):
      return math.floor(node / MIL)
   
   
  def getCount(node):
      return node - getTotal(node) * MIL
   
   
  nodeIdentity = makeNode(0.0, 0.0)
   
   
  def nodeOp(node1, node2):
      return node1 + node2
      # Equivalent to the following:
      return makeNode(
          getTotal(node1) + getTotal(node2), getCount(node1) + getCount(node2)
      )
   
   
  identityMapping = -1
   
   
  def mapping(tag, node):
      if tag == identityMapping:
          return node
      # If assigned, new total is the number assigned times count
      count = getCount(node)
      return makeNode(tag * count, count)
   
   
  def composition(mapping1, mapping2):
      # If assigned multiple times, take first non-identity assignment
      return mapping1 if mapping1 != identityMapping else mapping2
  #---------------------------------Pollard rho--------------------------------------------
  def memodict(f):
      """memoization decorator for a function taking a single argument"""
      class memodict(dict):
          def __missing__(self, key):
              ret = self[key] = f(key)
              return ret
   
      return memodict().__getitem__
   
   
  def pollard_rho(n):
      """returns a random factor of n"""
      if n & 1 == 0:
          return 2
      if n % 3 == 0:
          return 3
   
      s = ((n - 1) & (1 - n)).bit_length() - 1
      d = n >> s
      for a in [2, 325, 9375, 28178, 450775, 9780504, 1795265022]:
          p = pow(a, d, n)
          if p == 1 or p == n - 1 or a % n == 0:
              continue
          for _ in range(s):
              prev = p
              p = (p * p) % n
              if p == 1:
                  return math.gcd(prev - 1, n)
              if p == n - 1:
                  break
          else:
              for i in range(2, n):
                  x, y = i, (i * i + 1) % n
                  f = math.gcd(abs(x - y), n)
                  while f == 1:
                      x, y = (x * x + 1) % n, (y * y + 1) % n
                      y = (y * y + 1) % n
                      f = math.gcd(abs(x - y), n)
                  if f != n:
                      return f
      return n
   
   
  @memodict
  def prime_factors(n):
      """returns a Counter of the prime factorization of n"""
      if n <= 1:
          return Counter()
      f = pollard_rho(n)
      return Counter([n]) if f == n else prime_factors(f) + prime_factors(n // f)
   
   
  def distinct_factors(n):
      """returns a list of all distinct factors of n"""
      factors = [1]
      for p, exp in prime_factors(n).items():
          factors += [p**i * factor for factor in factors for i in range(1, exp + 1)]
      return factors
   
   
  def all_factors(n):
      """returns a sorted list of all distinct factors of n"""
      small, large = [], []
      for i in range(1, int(n**0.5) + 1, 2 if n & 1 else 1):
          if not n % i:
              small.append(i)
              large.append(n // i)
      if small[-1] == large[-1]:
          large.pop()
      large.reverse()
      small.extend(large)
      return small
  
  #---------------------------------Binary Search------------------------------------------
  def binarySearch(arr, n, key):
      left = 0
      right = n-1
      mid = 0
      res = n
      while (left <= right):
          mid = (right + left)//2
          if (arr[mid] > key):
              res=mid
              right = mid-1
          else:
              left = mid + 1
      return res
  
  def binarySearch1(arr, n, key):
      left = 0
      right = n-1
      mid = 0
      res=-1
      while (left <= right):
          mid = (right + left)//2
          if (arr[mid] > key):
              right = mid-1
          else:
              res=mid
              left = mid + 1
      return res
  #---------------------------------running code------------------------------------------
  t=1
  t=int(input())
  for _ in range (t):
      #n=int(input())
      n,q=map(int,input().split())
      #a=list(map(int,input().split()))
      #b=list(map(int,input().split()))
      s=input()
      #n=len(s)
      pre=[0]*(n+1)
      m=1
      for i in range (n):
          if s[i]=='+':
              pre[i+1]=pre[i]+m
          else:
              pre[i+1]=pre[i]-m
          m*=-1
      for i in range (q):
          l,r=map(int,input().split())
          l-=1
          parity=(r-l)%2
          sm=pre[r]-pre[l]
          if sm==0:
              print(0)
          else:
              if parity:
                  print(1)
              else:
                  print(2)