#include <bits/stdc++.h> using namespace std; const int N = 110; int cnt[N]; int main(){ int n; while (cin >> n){ if (n == 0) break; for (int i=0; i<n; i++){ int grade; cin >> grade; cnt[grade] ++; } int query; cin >> query; printf("%d\n", cnt[query]); } return 0; }