pku2815.cpp

这是ACM 方面的资料 是PKU的 北京大学的出来的

#include <stdio.h>

int main()
{
	int A, HH, MM, SS, Sec;
	double round, T;
	
	round = 3600 * 12 / 11.0;

	while (scanf("%d %d:%d:%d", &A, &HH, &MM, &SS) != -1 && A != -1)
	{
		Sec = HH * 3600 + MM * 60 + SS;
		T = round * A / 360;
		while (T < Sec)
		{
			T += round;
		}
		Sec = (int)T;
		Sec %= 86400;
		printf("%02d:%02d:%02d\n", Sec / 3600, Sec % 3600 / 60, Sec % 60);
	}
	return 0;
}