#include <bits/stdc++.h>
using namespace std;
int main()
{
	int x;
	cin >> x;
	cout << fixed << setprecision(2) << (x + x / 100 + x % 100) / 3.0;
	return 0;
}

过辣！（脑残人士的欢呼）

    long long n,ab,cd;
    cin>>n;
    ab=n/100;
    cd=n%100;
    cout<<fixed<<setprecision(2)<<1.0*(n+ab+cd)/3;

#include <bits/stdc++.h> using namespace std; int main() { int x; cin >> x; cout << fixed << setprecision(2) << (x + x / 100 + x % 100) / 3.0; return 0; }

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin >> n;
    double k = n + n / 100 + n % 100;
    double t = k / 3;
    cout << fixed << setprecision(2) << t;
    return 0;
}

#include <iostream>//hetao3097453
#include <iomanip>
using namespace std;
int main()
{
	int n;
	cin >> n;
	cout << fixed << setprecision(2) << (n + n / 100 + n % 100) / 3.0;
	return 0;
}