代碼：
#include <iostream>
#include <cmath>
#include <ctime>
#include <cstdio>
#include <fstream>
using namespace std;
ifstream fin("f:\\input.txt");
ofstream fout("f:\\output.txt");
int main()
{
//freopen("f:\\input.txt", "r", stdin);
//freopen("f:\\output1.txt", "w", stdout);
int abc, def, ghi;
for(abc = 123; abc <= 987; ++abc)
{
for(def = 123; def <= 987 ; ++def)
{
for(ghi = 123; ghi <= 987 ; ++ghi)
{
if(ghi == abc * 3 && def == abc * 2)
{
int tag[10] = {0};
if(tag[abc / 100] == 1) break;
else tag[abc / 100] = 1;
if(tag[abc % 100 / 10] == 1) break;
else tag[abc % 100 / 10] = 1;
if(tag[abc % 10] == 1) break;
else tag[abc % 10] = 1;
if(tag[def / 100] == 1) break;
else tag[def / 100] = 1;
if(tag[def % 100 / 10] == 1) break;
else tag[def % 100 / 10] = 1;
if(tag[def % 10] == 1) break;
else tag[def % 10] = 1;
if(tag[ghi / 100] == 1) break;
else tag[ghi / 100] = 1;
if(tag[ghi % 100 / 10] == 1) break;
else tag[ghi % 100 / 10] = 1;
if(tag[ghi % 10] == 1) break;
else tag[ghi % 10] = 1;
if(tag[0] == 1) break;// 排除0
printf("%d\n", abc * 1000000 + def * 1000 + ghi);
}
}
}
}
cout <<"Time = " << (double)clock() / CLOCKS_PER_SEC << "s" << endl;
return 0;
}