pku2555.cpp

这是ACM 方面的资料 是PKU的 北京大学的出来的

#include <stdio.h>
double mw, mi, tw, ti;
double total, mW, mI, T;

int main()
{
	while (scanf("%lf %lf %lf %lf", &mw, &mi, &tw, &ti) != -1)
	{
		if (mw == 0 && mi == 0 && tw == 0 && ti == 0)
		{
			break;
		}
		T = 0;
		total = mw * tw * 4.19 + mw * 335 + mi * ti * 2.09;
		if (total < 0)
		{
			T = total / (mw + mi) / 2.09;
			mI = mw + mi;
			mW = 0;
		}
		else
		{
			total = (mw * tw * 4.19) + (mi * ti * 2.09) - mi * 335;
			if (total > 0)
			{
				T = total / (mw + mi) / 4.19;
				mW = mw + mi;
				mI = 0;
			}
			else
			{
				total = -total;
				mI = total / 335.0;
				mW = mw + mi - mI;
				T = 0;
			}
		}
		printf("%.1lf g of ice and %.1lf g of water at %.1lf C\n", mI, mW, T);
	}
	return 0;
}