#include <iostream>
#include <math.h>
using namespace std;
int t;
int liczba[15];
float suma[3];
float srednia[3];
int main()
{
cin >> t;
for(int i=0; i<5; i++)
{
cin >> liczba[i];
suma[0] += liczba[i];
srednia[0]=(int)suma[0]/5;
}
cout<<endl<<srednia[0]<<endl;
for(int i=5; i<10; i++)
{
cin >> liczba[i];
suma[1] += liczba[i];
srednia[1]=suma[1]/5;
}
cout<<endl<<round(srednia[1])<<endl;
for(int i=10; i<15; i++)
{
cin >> liczba[i];
suma[2] += liczba[i];
srednia[2]=(int)suma[2]/5;
}
cout<<endl<<srednia[2]<<endl;
return 0;
}
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