#include <bits/stdc++.h>   using namespace std;   const long long inf = 13e9;   const long long dd = 1e6 + 7;   int main() {     int n, s, r = -1;     cin >> n >> s;     s *= 100;     for (int i = 0; i < (long long)n; i++) {       int x, y;       cin >> x >> y;       x = x * 100 + y;       if (x <= s) r = max((100 - y) % 100, r);     }     cout << r;   }   