func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, k;     cin >> n >> k;     int maxi = -1000000050;     int f, t;     int loli = -1000000050;     for (int i = 0; i < n; i++) {       cin >> f >> t;       if (t > k) {         loli = f - (t - k);       } else         loli = f;       if (loli > maxi) maxi = loli;     }     cout << maxi << endl;     return 0;   }   