#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	float b;
	cin>>a;
	if(a<=100){
		b=a*2;
	}else{
		b=a*1;
	}
	cout<<b;
	return 0;
}
/**************************************************************
	Problem: 1637
	User: fuhoubin
	Language: C++
	Result: Wrong Answer
****************************************************************/