#include <bits/stdc++.h>
using namespace std;
signed main(){
ios::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
long long arr[n];
for(long long &i : arr){
cin >> i;
}
long long dp[n];
dp[0]=arr[0]*n;
for(int i = 1;i<n;i++){
long long mx = arr[i];
dp[i]=2e18;
for(int j = i-1;j>=0;j--){
dp[i]=min(dp[i],dp[j]+mx*(n-j-1));
mx=max(mx,arr[j]);
}
dp[i]=min(dp[i],mx*n);
}
cout << dp[n-1];
return 0;
}
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