#include<iostream> 
using namespace std;

int frequency(int a[], int n, int x)
{
    int count = 0;
    for (int i=0; i < n; i++)
       if (a[i] == x) 
          count++;
    return count;
}

int main() {
    int a[] = {0, 5, 5, 5, 4};
    int x = 5;
    int n = sizeof(a)/sizeof(a[0]);
    cout << frequency(a, n, x);
    return 0;
}