func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long t, a, b, x;     cin >> t;     while (t--) {       cin >> a >> b;       if (a == b) {         cout << 0 << endl;         continue;       }       if (a < b) {         x = (b / 10) - (a / 10);       } else {         x = (a / 10) - (b / 10);       }       if (a + x * 10 < b || b + x * 10 < a)         cout << x + 1 << endl;       else         cout << x << endl;     }   }   