输出一直是0，不知道出什么问题了

#include <bits/stdc++.h>
using namespace std;

int main(){
	int n;
    cin >> n;
    
    int cnt = 0;
    for (int i = 1; i <= 3; i++)
    for (int j = 1; j <= 3; j++)
    for (int k = 1; k <= 3; k++)
    for (int l = 1; l <= 3; l++)
    for (int m = 1; m <= 3; m++)
    for (int n = 1; n <= 3; n++)
    for (int o = 1; o <= 3; o++)
    for (int p = 1; p <= 3; p++)
    for (int q = 1; q <= 3; q++)
    for (int r = 1; r <= 3; r++)
    if (i+j+k+l+m+n+o+p+q+r == n)
    cnt++;
    
    cout << cnt;
    
    for (int i = 1; i <= 3; i++)
    for (int j = 1; j <= 3; j++)
    for (int k = 1; k <= 3; k++)
    for (int l = 1; l <= 3; l++)
    for (int m = 1; m <= 3; m++)
    for (int n = 1; n <= 3; n++)
    for (int o = 1; o <= 3; o++)
    for (int p = 1; p <= 3; p++)
    for (int q = 1; q <= 3; q++)
    for (int r = 1; r <= 3; r++)
    if (i+j+k+l+m+n+o+p+q+r == n)
    printf("%d %d %d %d %d %d %d %d %d %d\n", i, j, k, l, m, n, o, p, q, r);
	return 0;
}