#include <iostream>
using namespace std;
int *liczba=new int [100];
int i=0;
int main()
{
int suma=0;
cin>>liczba[i];
while(liczba[i]>=-100&&liczba[i]<=100)
{
suma+=liczba[i];
i++;
cout<<suma<<endl;
cin>>liczba[i];
}
}
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