View Code of Problem 1008

#include<iostream>
#include<cstdio>
#include<cmath>
#define INF 0xfffffff
using namespace std;
int main()
{
    int n;
    while(scanf("%d",&n),n)
    {
        int i,v,t,ans,minn=INF;
        for(i=0;i<n;i++)
        {
            scanf("%d%d",&v,&t);
            if(t<0)
                continue;
            ans=floor(t+4500/(v/3.6)+0.7);
            minn=min(minn,ans);
        }
        printf("%d\n",minn);
    }
    return 0;
}