#include <iostream>
#include <math.h>
using namespace std;
float srednia, suma = 0;
int tablica [5], m, ileProb;
int main()
{ cin>>ileProb;
for(int i = 1; i <= ileProb; i++)
{
for(int j = 1; j <= 5; j++)
{
cin>>tablica[j-1];
suma += tablica[j-1];
}
srednia = suma/5;
m = tablica[0];
if(fabs(srednia-tablica[1])<fabs(srednia-m)) m=tablica[1];
if(fabs(srednia-tablica[2])<fabs(srednia-m)) m=tablica[2];
if(fabs(srednia-tablica[3])<fabs(srednia-m)) m=tablica[3];
if(fabs(srednia-tablica[4])<fabs(srednia-m)) m=tablica[4];
cout<<m<<endl;
suma = 0;
}
return 0;
}
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