#include <iostream>
using namespace std;
int calSame(int n,int* A,int key){
int count = 0, i;
for(i = 0;i < n; i++){
if(A[i] == key) count++;
}
return count;
}
int main() {
int n, i, key;
while(cin >> n){
if(n == 0) break;
int* A = new int[n];
for(i = 0;i < n; i++){
cin >> A[i];
}
cin >> key;
cout << calSame(n, A, key) << endl;
delete []A;
}
return 0;
}

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