???

#include <iostream>
#include <vector>
using namespace std;
bool kt=false;
int sum=0,buff=0;
void nhap(vector <int> &a)
{
    int x;
    while (cin>>x)
        a.push_back(x);
}
void kiemtra(vector <int> &a)
{
    for (int i=0; i<a.size();i++)
        sum+=a[i];
    for (int i=0; i<(a.size()-1);i++)
        {
            buff+=a[i];
            if(buff==sum/2)
                kt=true;
        }
}
void output()
{
    if (kt==true)
        cout<<"True";
    else
        cout<<"False";
}
int main()
{
    vector <int> a;
    nhap(a);
    kiemtra(a);
    output();
    return 0;
}