func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int a, b;       cin >> a >> b;       if (a > b) {         if (a % 2 == b % 2)           cout <<  1  << endl;         else           cout <<  2  << endl;       } else if (a < b) {         if (a % 2 == b % 2)           cout <<  2  << endl;         else           cout <<  1  << endl;       } else         cout <<  0  << endl;     }     return 0;   }   