#include <iostream>
using namespace std;
int n,nums,dp[200000],maxans=-10000;
int main(){
    cin>>n;
	for (int i=1;i<=n;++i){
		cin>>nums;
		if (i==1) dp[i]=nums;
    	else dp[i]=max(dp[i],dp[i-1]+nums);
    	maxans=max(maxans,dp[i]);
	}
	cout<<maxans;
	return 0;
}

第二个点WA了，80pts