#include<bits/stdc++.h>
using namespace std;
const int N = 1e4;
int main(){
int n, a[N], m=0;
int l, r;
cin >> n;
for(int i = 0 ; i < n ; i++)cin >> a[i];
for(int i = 0 ; i < n ; i++){
l = r = i;
while(l>=0 && a[i] <= a[l])l--;
while(r< n && a[i] <= a[r])r++;
m = max(m , a[i]*(r-l-1));
}
cout << m << endl;
}