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#include<bits/stdc++.h>

using namespace std;

int main()
{
    int n, wyn=0, a, m = 1<<30;
    scanf( "%d", &n );
    for( int i = 0; i<n; i++ )
    {
        scanf( "%d", &a );
        wyn += a;
        if( a%2 == 1 && a<m )
            m = a;
    }
    if( wyn%2 == 1 )
        wyn -= m;

    if( wyn )
        printf( "%d", wyn );
    else
        printf( "NIESTETY" );

    return 0;
}