t = int(input())
for _ in range(t):
a = [int(s) for s in input().split()]
s = sum(a)
print((s - s % 2) // 2)
#include<bits/stdc++.h>
using namespace std;
int main(){
int t;
cin>>t;
while(t--){
long long a,b,c;
cin>>a>>b>>c;
cout<<(a+b+c)/2<<endl;
}
return 0;
}
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