#include<bits/stdc++.h> using namespace std; int a[1000009]; int main(){ int n, max_num = -1e9; cin >> n; for(int i = 1; i <= n; i++){ cin >> a[i]; }for(int i = 1; i <= n; i++){ if(a[i] > max_num){ max_num = a[i]; } } cout<<max_num; return 0; }