pku1006.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 p,e,i,d,days,time=0,j;
      while(1)
      {
            scanf("%d%d%d%d",&p,&e,&i,&d);
            if(p==-1&&e==-1&i==-1&d==-1) break;
		for(j=i%33;j<=21252;j+=33)
		{
			if(j%23==p%23&&j%28==e%28) break;
		}
		time++;
		days=(j-d+21252-1)%21252+1;
            printf("Case %d: the next triple peak occurs in %d days.\n",time,days);          
      }            
}