POJ.1003 Hangover

Problem:
http://poj.org/problem?id=1003

Idea:
n/a

Source:

 int main()  
 {  
      double d;  
      while (1) {  
           //scanf("%f", &d);  
           cin >> d;  
           if (d == 0.00) break;  
           int k;  
           double cur = 0.0;  
           for (k = 1; k < 3000; k++) {  
                cur += (1 / (double)(k + 1));  
                if (cur > d) break;  
           }  
           cout << k << " card(s)" << endl;  
      }  
      return 0;  
 }