zoj 2229 贪心..

注意最后那个输出即可,,,

 

/*贪心,骑车问题.. * * * */#include <stdio.h>#include <string.h>#include <iostream>using namespace std;int main(void){int n,speed;double time;double min;while(cin>>n){if(!n)break;min = 999999.0;for(int i=0;i<n;i++){int tmp;cin>>speed>>tmp;time = (double)tmp;if(time<0)continue;else{//cout<<"time="<<time<<endl;time=16200.0/speed+time;//cout<<"speed="<<speed<<endl;if(time<min)min=time;}}if(min-(int)min>0)min+=1;printf("%.0lf/n",min);}return 0;}