1 #include <iostream>
 2 using namespace std;
 3 int main(){
 4     int k;
 5     while(cin>>k){
 6         double b=0;
 7         double i=0;
 8         while(1){
 9             i++;
10             b=b+(1/i);
11             if(b>k){
12                 cout<<i<<endl;
13                 break;
14             }
15         }
16     }
17     return 0;
18 }