#include <bits/stdc++.h>
#define ull unsigned long long
#define ll long long
#define el endl
#define nl '\n'
#define all(v) v.begin(), v.end()
using namespace std;

void input()
{
    if (fopen("in.txt", "r"))
    {
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
    }
}

void init()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}
int main()
{
Fast:
    input();
    init();
    //---------------------------------------------------------------------------------------------------------------
    int qnt;
    cin >> qnt;
    if (qnt > 1000)
    {
        cout << 0.9 * qnt * 100 << nl;
    }
    else
    {
        cout << qnt * 100;
    }

    return 0;
}