#include <iostream>

using namespace std;


bool same(int a, int b) {
    
    return (a-b) % 23 == 0;
}

int numbers[105];

int main(int argc, const char * argv[])
{
    int N;
    cin >> N;
   
    for (int i=0;i<N;i++) {
        cin >> numbers[i];
    }
    
    int extra=0;
    
    for (int i=1;i<N;i++) {
        bool already = false;
        
        for (int j=i-1;j>=0;j--){
            already = already or same (numbers[i],numbers[j]);
        }
    
        if (already)
            extra++;
                                  
                                  
    }
    cout << N-extra << '\n';
    return 0;
}