#include<iostream> |
using namespace std; |
int main(){ |
double m; |
double distance; |
int count; |
while (cin>>m && m != 0){ |
count = 1; |
distance = 1.0 / 2; |
while (distance < m){ |
count++; |
distance += 1.0 / (count + 1); |
|
} |
cout<<count<< " card(s)" <<endl; |
} |
} |