#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; } |
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