abc * abc = defbc

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

using namespace std;

int main()
{
    int bufer = 0;
    int a, b, c, _b, _c, _d, _e, _f;

    for (a = 0; a < 10; a++)
    {
        for (b = 0; b < 10; b++)
        {
            if (a == b) continue;

            for (c = 0; c < 10; c++)
            {
                if (b == c) continue;

                bufer = a*100 + b*10 + c;
                bufer *= bufer;
                if (bufer > 99999)
                {
                    continue;
                }
                // abc * abc = defbc
                _c = bufer % 10;
                _b = bufer / 10 % 10;
                _f = bufer / 100 % 10;
                _e = bufer / 1000 % 10;
                _d = bufer / 10000;
                if (b == _b && c == _c)
                {
                    if (c != b &&
                        _b != _c && _b != _f && _b != _e && _b != _d &&
                        _c != _f && _c != _e && _c != _d &&
                        _f != _e && _f != _d &&
                        _e != _d)
                    {
                        printf("result = %d\n", (int)sqrt(bufer));
                    }
                }
            }
        }
    }
    return 0;
}