详细题解

using namespace std;
int ans = 0;
void dfs(int d)
{
    if (d == 4 || d == 8)
        return;
    if (d > 10)return;
    if (d == 10)
    {
        ans++;
        return;
    }
    dfs(d + 1);
    dfs(d + 2);
    dfs(d + 3);
}
int main()
{
    dfs(0);
    cout << ans;
    return 0;
}
```具体的过题步骤代码
#include<iostream>
using namespace std;
int main()
{
    cout << 42;
}