POJ1922-Ride to School
http://poj.org/problem?id=1922
注意精度问题然后向上取整,水题。
#include<stdio.h> #include<math.h> int main(void) { int N,i,v,t; double x,min; while(scanf("%d",&N),N) { min=1e100; for(i=0;i<N;i++) { scanf("%d%d",&v,&t); x=4.5*3600.0/v+t; if(t>=0&&x<min) min=x; } printf("%.0lf\n",ceil(min)); } return 0; }