1903.cpp

这是哈尔滨工业大学acmOJ的源代码

/*  This Code is Submitted by wywcgs for Problem 1903 on 2005-12-30 at 20:20:02 */ 
#include <cstdio>
#include <cmath>

int main()
{
	char line[256];
	
	while(gets(line) != NULL) {
		double d = 0;
		double bx, by, ex, ey;
		while(gets(line) != NULL && line[0] != 0) {
			sscanf(line, "%lf %lf %lf %lf", &bx, &by, &ex, &ey);
			d += sqrt((bx-ex)*(bx-ex)+(by-ey)*(by-ey));
		}
		int t = (int)(d/1000*2/20*60 + 0.5);
		printf("%d:%02d\n", t/60, t%60);
	}
	return 0;
}