#include<iostream> #include<stack> using namespace std; const int maxn = 105; int n,data[maxn],t[maxn]; stack<int>s; int main(){ int ans; while(cin>>n){ for(int i=1;i<=n;i++){ cin>>data[i]; } ans = 0; for(int i=1;i<=n;i++){ if(s.empty()||s.top()<=data[i]){ s.push(data[i]); } else{ int count = 0,now_ans = 0; while(!s.empty()&&s.top()>data[i]){ count++; now_ans = s.top()*count; if(now_ans>ans){ ans = now_ans; } s.pop(); } while(count>=0){ s.push(data[i]); count--; } } } int count = 0,p = s.size(),len = p; while(!s.empty()){ t[p--] = s.top();s.pop(); } for(int i=1;i<=len;i++){ ans = max(ans,t[i]*(len-i+1)); } cout<<ans<<endl; } return 0; }