#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;
}
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