463A - Caisa and Sugar - CodeForces Solution

/*// Ih Badhon Chowdhury //*/

#include <bits/stdc++.h>

using namespace std;
#define  ll       long long int
#define  ld       long long double
#define  sp       " "
#define  pb       push_back
#define  cinv(v)  for(auto &i:v) cin >> i;
#define  vi       vector<int>
#define  vii      vector<ll>
#define  cout(v)  for(auto e:v) cout << e << sp;
#define  M        1e5
#define  yes      cout << "YES" << endl
#define  no       cout << "NO" << endl
#define  case     "Case " << test++ << ": "
#define  all(v)   v.begin(), v.end()
#define  tst      int tst; int test=1; cin >> tst; while(tst--)
#define  Faster   ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define  nl       "\n"


void solve()
{
    //start
}


 // Driver Code
 int main()
 {
     Faster;
     ll tc = 1, test = 1;
     //cin >> tc;
     while(tc--){
        //solve();
        int n, s;
        cin >> n >> s;


        int res = 100;
        bool ok = 0;
        while(n--)
        {
            int x, y;
            cin >> x >> y;
            if(x<s){
                if(y)
                    res = min(res,y);
            }
            if(x<s or x==s and y==0)
                ok = 1;
        }

        if(ok) cout << 100 - res;
        else cout << -1 << nl;
     }
 }