#include<stdio.h>
int  main()
{
	int i,n,k;
	long float sum;
	printf("Cards  Overhang\n");
	while(scanf("%d",&n)!=EOF){
		k=2;
		for(i=1,sum=0;i<=n;i++){
			sum+=1.0/k;
			k+=2;
		}
		printf("%5d",n);
		printf(" %9.3f\n",sum);
	}
}

• Re:苍天了，这题也太水了，5分钟AC (280) lyc1989 2009-08-20 15:36:45