//HOW DO I INTRODUCE CONSTRAINTS FOR THE INPUTS OF AN ARRAY//
#include
#include<bits/stdc++.h>
using namespace std;
int main(){
int arr[5];
for(int i=0;i<5;i++)
{
cin>>arr[i];
}
int sum=0;
for(int i=0;i<5;i++)
{ if(arr[0]<0)
{
break;
}
else if(sum>=0)
{if(arr[i]<0)
{
break;
}
cout<<arr[i]<<endl;
sum=sum+arr[i];}
else{break;}
}
return 0;
}