#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n<=100) cout<<n*2;
    if(100<n) cout<<(n-100)*1+100*2;
    return 0;
}
 
/**************************************************************
	Problem: 1637
	User: panjinyan
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/