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我用周期取整方法做的

Posted by S070703520 at 2009-07-25 21:27:27 on Problem 1006
就是算出满足日期一致的条件下三个周期的个数同时为整数时的最早日期,再同当前日期进行对比处理得出答案。
#include<stdio.h>

int main()
{
	float a,b,c,x,y,z;
	int days,data,ty,tz,i=0;
	while(true)
	{
		scanf("%f%f%f%d",&a,&b,&c,&data);
		if(a==-1&&b==-1&&c==-1&&data==-1)break;
		i++;
		a=int(a)%23;b=int(b)%28;c=int(c)%33;
		for(x=0.0;;x++)
		{
			y=(a-b+23*x)/28;
			z=(a-c+23*x)/33;
			ty=int(y);
			tz=int(z);
			y-=ty;
			z-=tz;
			if(y==0.0&&z==0.0)break;
		}
		if(a+23*x-data<0)
			days=int(a+23*x+21252-data);
		else if(a+23*x-data>0)
			days=int(a+23*x-data);
		else
			days=21252;
		printf("Case %d: the next triple peak occurs in %d days.\n",i,days);
	}
	return 0;
}

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