Question

ai giúp mình với dùng c++ nha

Answer 1

#include <bits/stdc++.h>

using namespace std;

int main()

long long a[200],i,n,t;

{

freopen("seq.inp","r",stdin);

freopen("seq.out","w",stdout);

cin>>n;

for (i=1; i<=n; i++) cin>>a[i];

t=0;

for (i=1; i<=n; i++) t=t+a[i];

for (i=1; i<=n; i++) 

if ((t%a[i]==0) and (a[i]==t/2)) 

{

cout<<a[i]<<" ";

return 0;

}

cout<<"N";

return 0;

}