和测试数据一样的输出，为啥不能过

#include <iostream>
#include <cstring>
using namespace std;
int a[10];
int a1, a2, a3;
int c[4];

struct node {
    int x, y, z;
} b[6] = {{0, 1, 2}, {0, 2, 1}, {1, 0, 2}, {1, 2, 0}, {2, 1, 0}, {2, 0, 1}};

void f1(int i) {
    a[i % 10]++;
    a[i / 10 % 10]++;
    a[i / 100 % 10]++;
}

bool f(int i, int j) {
    memset(a, 0, sizeof(a));
    f1(i);
    f1(j);
    int cnt = 0;
    for (int i = 1; i < 10; i++) {
//      cout << a[i] << " ";
        if (a[i] != 1) {
            c[cnt++] = i;
        }
    }
    if (cnt == 3)
        return 1;
    return 0;
}

int get_k(int i, int j, int k) {
    return c[i] * 100 + c[j] * 10 + c[k];
}

bool g(int i, int j, int k) {
    if (i * a3 * a2 == j * a1 * a3 && j * a1 * a3 == k * a1 * a2)
        return 1;
    else
        return 0;
}

int main() {
    cin >> a1 >> a2 >> a3;
    int fl = 1;
    for (int i = 100; i <= 1000; i++) {
        for (int j = i; j < 1000; j++) {
//          for (int k = 100; k < 1000; k++) {
            if (f(i, j) )   {
                for (int i_1 = 0; i_1 < 6; i_1++) {
                    int k = get_k(b[i_1].x, b[i_1].y, b[i_1].z);
                    if (g(i, j, k)) {
                        fl = 0;
                        cout << i << " " << j << " " << k << endl;
                    }

                }

            }
//          }
        }
    }
    if (fl)
        cout << "No!!!";
    return 0;
}

输入 1 2 3，输入结果没问题吧，为啥不能过