#include<bits/stdc++.h>
using namespace std;
int main(){
	int z,q;
	cin>>z;
	if(z<=100){
		q=z*2;
		cout<<q;
	}else{
		q=(z-100)+100*2;
		cout<<q;
	}
	
} 

/**************************************************************
	Problem: 1637
	User: zhengzihao3
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/