参考答案：

#include<iostream>
using namespace std;
int s1, s2, s3;
int n;
int main()
{
    cin >> n;
    for (int i = 1; i <= n; ++i)
    {
        int t;
        cin >> t;
        if (t == 1) s1++;
        if (t == 3) s2++;
        if (t == 5) s3++;
    }
    cout << s1 << ' ' << s2 << ' ' << s3 << endl;
    return 0;
}