func_code_string: #include <bits/stdc++.h>   const long double pi = acos(-1);   const long long mod = 1e9 + 7, N = 1e5 + 5;   using namespace std;   int main() {     ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);     long long q;     cin >> q;     while (q--) {       long long a, b;       cin >> a >> b;       if (a > b) {         if ((a % 2 == 0 && b % 2 == 0) || (a % 2 != 0 && b % 2 != 0))           cout << 1 << endl;         else           cout << 2 << endl;       } else if (a < b) {         if ((a % 2 == 0 && b % 2 == 0) || (a % 2 != 0 && b % 2 != 0))           cout << 2 << endl;         else           cout << 1 << endl;       } else         cout << 0 << endl;     }     return 0;   }   