#include <bits/stdc++.h>
using namespace std;
int main()
{
long long int n,i,j,k,mid,m,a[100005],x,t;
vector<long long int>v;
//freopen("10107in.txt","r",stdin);
//freopen("10107out.txt","w",stdout);
while(cin>>n)
{
v.push_back(n);
sort(v.begin(),v.end());
j=v.size();
x=0;
for(i=0;i<v.size();i++)
{
x++;
a[x]=v[i];
}
if(j%2!=0)
{
mid=(j/2)+1;
cout<<a[mid]<<endl;
}
else
{
m=(j/2);
mid=(a[m]+a[m+1])/2;
cout<<mid<<endl;
}
}
return 0;
}
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