func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     int t;     cin >> t;     for (int i = 0; i < t; i++) {       int a, b;       cin >> a >> b;       int moves = 0;       if (a == b) {         cout << 0 <<   n ;         continue;       } else if (a < b) {         int needed = b - a;         moves = needed % 2 == 1 ? 1 : 2;       } else {         int needed = a - b;         moves = needed % 2 == 0 ? 1 : 2;       }       cout << moves <<   n ;     }     return 0;   }   