func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       long long x, y;       cin >> x >> y;       long long l = x - y;       l = l < 0 ? -l : l;       int r = l % 10;       long long a = l / 10.0;       if (r) a++;       cout << a;       cout <<   n ;     }   }   