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