include[HTML_REMOVED]

include[HTML_REMOVED]

include[HTML_REMOVED]

using namespace std;
const int N = 10010;

int main(){
int n,h[N];
cin>>n;
for(int i=0;i[HTML_REMOVED]>h[i];

int res =0;
for(int i=0;i<n;i++){
    int l=i,r=i;
    while(l>=0&&h[i]<=h[l]) l--;
    while(r<n&&h[r]>=h[i]) r++;
    res = max(res,h[i]*(r-l-1));
}
cout <<res<<endl;


return 0;

}