func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, t, s[200005], d[200005], k;     while (cin >> n >> t) {       int maxx = 0x3f3f3f3f;       for (int i = 1; i <= n; i++) {         cin >> s[i] >> d[i];         int change = s[i];         while (change < t) {           change += d[i];         }         if (change - t < maxx) {           maxx = change - t;           k = i;         }       }       cout << k << endl;     }   }   