func_code_string: #include <bits/stdc++.h>   using namespace std;   bool sortmd(pair<long long, long long> &a, pair<long long, long long> &b) {     if (a.first != b.first)       return a.first < b.first;     else       return a.second < b.second;   }   int main() {     ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);     srand(time(NULL));     long long t, i, j, a, b;     cin >> t;     while (t--) {       cin >> a >> b;       if (a == b) {         cout << 0 << endl;       } else if (a < b) {         j = b - a;         if (j % 2 == 0)           cout << 2 << endl;         else           cout << 1 << endl;       } else {         j = a - b;         if (j % 2 == 0)           cout << 1 << endl;         else           cout << 2 << endl;       }     }     return 0;   }   