POJ1003水题

#include<stdio.h>
#include<string.h>
#include<math.h>
#include<algorithm>
#include<iostream>
#include<string>
using namespace std;
const int eps=1e-8;
const int maxn=1;//须填写
int main()
{
double num=0;
while(scanf("%lf",&num)!=EOF&&num){
double sum=0;
int cont=1;
while(sum<num){
sum+=1.00/(++cont);
}
printf("%d card(s)\n",cont-1);
}
return 0;
}