for硬来

#include<iostream>
using namespace std;
int main(){
int a[100];
int n,x;
cin >> n;
for (int i = 1; i <= n; ++i)
{
cin >> a[i];
}
cin >> x;
for (int i = 1; i <= n; ++i)
{
if (a[i] == x)
{
cout << i;
return 0;
}
}
cout << -1;
return 0;
}