ZOJ 2405 Specialized Four-Digit Numbers

//2405Specialized Four-Digit Numbers
#include <iostream>
#include <stdio.h>
#define FILE_DEBUG

#ifdef FILE_DEBUG
#include <fstream>
#endif

using namespace std;
int main(int argc, char *argv[])
{
#ifdef FILE_DEBUG
	ifstream fin;
	fin.open("input.txt");
	cin.rdbuf(fin.rdbuf()); // assign file's streambuf to cin
#ifdef _C_LAN_
	freopen("input.txt", "r", stdin);
#endif
#endif
#ifdef FILE_DEBUG
	ofstream fout;
	fout.open("output.txt");
	cout.rdbuf(fout.rdbuf()); // assign file's streambuf to cout
#ifdef _C_LAN_
	freopen("output.txt", "w", stdout);
#endif
#endif

      int digit_sum[3], tmp, sum;
      const int BASE[3] = {10, 16, 12};
      for (int i = 1000; i < 9999; i ++)
      {
          for (int j = 0; j < 3; j ++)
          {
              digit_sum[j] = 0;
              tmp = i;
              while (tmp > 0)
              {
                    digit_sum[j] += tmp % BASE[j];
                    tmp /= BASE[j];
              }
          }
          if (digit_sum[0] == digit_sum[1] && digit_sum[0] == digit_sum[2])
          {
                 cout << i << endl;
          }
      }

    return 0;
}