View Code of Problem 1008

#include <iostream>
#include <cstring>
#include <cstdio>
#include <algorithm>
using namespace std;

int main()
{
    int n;
    int a,b;
    while(cin >> n)
    {
        int ans = 999999;
        int s = 0;
        if(n == 0)
        {
            break;
        }
        for(int i = 1; i<= n; i++)
        {
            cin >> a >>b;
            if(b >= 0)
            {
                double aa = (4500/(a*10.0/36.0));
                if(aa - (int)aa > 0.0)
                aa++;
                s = aa + b;
                if(s < ans)
                ans = s;
            }

        }
         printf("%d\n",ans);
    }
    return 0;
}