#include <iostream>
using namespace std;

int main() {
    int cand, ch;
    cin >> cand >> ch;
    int* Ch = new int[ch];
    double* Cand = new double[cand];

    for (int i = 0; i < cand; i++) {
        Cand[i] = 0;
    }

    for (int i = 0; i < ch; i++)
        cin >> Ch[i];

    for (int i = 0; i < ch; i++) {
            Cand[Ch[i]-1] += 1;
    }

    for (int i = 0; i < cand; i++) {
        printf("%.2f%%\n", (Cand[i]/6.0)*100.0);
    }
}
+++++++++++
Why this isn't work?

What is the hardcoded value "6" in your code?