title: Circle Lattice Points
signature: int circleLatticePoints(int r) {
test_code: #include <algorithm>
  #include <assert.h>
  #include <cstdlib>
  #include <iostream>
  #include <map>
  #include <set>
  #include <string>
  #include <tuple> 
  #include <unordered_map>
  #include <vector>
  #include <math.h>
  #include <cmath>
  #include <bits/stdc++.h>
  #include <numeric>
  #include <functional>
  
  using namespace std;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  bool validateSolution(int actual, int expected){
      return actual == expected;
  }
  
  string driver(int r, int expected){
      try
      {
          if (validateSolution(PLACEHOLDER_FN_NAME(r), expected)){
              return "PASSED";
          }
          return "FAILED";
      }
      catch (const std::overflow_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::runtime_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::exception& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (...)
      {
          return "UNK_ERROR";
      }
  }
  
  int main() {
      string result = "";
  
      result = driver(34, 12); 
      cout << "TEST-" << 0 << "..."
           <<  result
           << "\n";
  
      result = driver(56, 4); 
      cout << "TEST-" << 1 << "..."
           <<  result
           << "\n";
  
      result = driver(90, 12); 
      cout << "TEST-" << 2 << "..."
           <<  result
           << "\n";
  
      result = driver(47, 4); 
      cout << "TEST-" << 3 << "..."
           <<  result
           << "\n";
  
      result = driver(36, 4); 
      cout << "TEST-" << 4 << "..."
           <<  result
           << "\n";
  
      result = driver(63, 4); 
      cout << "TEST-" << 5 << "..."
           <<  result
           << "\n";
  
      result = driver(21, 4); 
      cout << "TEST-" << 6 << "..."
           <<  result
           << "\n";
  
      result = driver(76, 4); 
      cout << "TEST-" << 7 << "..."
           <<  result
           << "\n";
  
      result = driver(18, 4); 
      cout << "TEST-" << 8 << "..."
           <<  result
           << "\n";
  
      result = driver(75, 20); 
      cout << "TEST-" << 9 << "..."
           <<  result
           << "\n";
  
      return 0;
  }
source_py: def circle_lattice_points(r):
      if (r <= 0):
          return 0
      result = 4
      for x in range(1, r):
          ySquare = ((r * r) - (x * x))
          y = int(math.sqrt(ySquare))
          if ((y * y) == ySquare):
              result += 4
      return result
source_cpp: int circle_lattice_points(int r) {
    if ( r <= 0 ) return 0;
    int result = 4;
    for ( int x = 1;
    x < r;
    x ++ ) {
      int ySquare = r * r - x * x;
      int y = sqrt ( ySquare );
      if ( y * y == ySquare ) result += 4;
    }
    return result;
  }