#include <bits/stdc++.h>   #pragma comment(linker,  /STACK:64000000 )   using namespace std;   const double eps = 1e-9;   const double pi = acos(-1.0);   int main() {     int n, s;     cin >> n >> s;     int res = -1;     for (int i = 0; i < n; i++) {       int x, y;       cin >> x >> y;       if (y == 0) {         if (s >= x) {           res = max(res, 0);         }       } else {         if (s > x) {           res = max(res, 100 - y);         }       }     }     cout << res << endl;     return 0;   }   