POJ1003

#include<iostream>#include<stdio.h>#include<string>#include<math.h>using namespace std;int main(){int i;float lengh,aim;cin>>aim;while(aim!=0){ i=2; lengh=0;while(lengh<=aim){lengh=lengh+1.0/i;i++;}cout<<i-2<<" card(s)\n";        cin>>aim;}return 0;}