#include <bits/stdc++.h> using namespace std; int main() { int n; cin >> n; int a[n]; for (int i = 0; i < n; i++) { cin >> a[i]; } int m, sum = 0, sumi = 0; cin >> m; for (int i = 0; i < n; i++) { if (a[i] == m) { sumi = i + 1; cout << sumi; return 0; } } cout << "-1"; }