1637.cpp

这是哈尔滨工业大学acmOJ的源代码

/*  This Code is Submitted by wywcgs for Problem 1637 on 2005-10-01 at 11:05:03 */ 
#include <stdio.h>
#include <math.h>

int main()
{
	int n;
	double total, sum;
	
	while(scanf("%lf", &total) == 1) {
		if(fabs(total) < 1e-3) {
			return 0;
		} else {
			sum = (double)0;
			for(n = 1; ; n++) {
				sum += (double)1 / (n + 1);
				if(sum - total > 1e-3) {
					printf("%d card(s)\n", n);
					break;
				}
			}
		}
	}
	
	return 0;
}