#include "stdafx.h"
#include <stdio.h>
#include "math.h"
#include <iostream>

using namespace std;
int main()
{
    int n, n1, n2, n3, count = 0;
    for (n = 111; n <= 999; n++)
    {
        n1 = n;
        n3 = n1 % 10;
        n1 /= 10;
        n2 = n1 % 10;
        n1 /= 10;

        if ((n1 == n2) || (n2 == n3) || (n1 == n3))
        count++;
    }
    cout << count << "chisel" << endl;
    system("pause");
    return 0;
}