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// Andrzej Ruminski

#include <iostream>
#include <cstdio>
using namespace std;

int main() {

    int n;
    scanf( "%d", &n );
    
    long long sum = 0;
    int minS = 2000;
    for( int i = 0; i < n; i++ ) {
        int a;
        scanf( "%d", &a );
        sum += a;
        minS = ( a % 2 == 1 ? min( a, minS ) : minS );
    }

    if( sum % 2 == 1 ) sum -= minS;

    if( sum == 0 ) printf( "NIESTETY\n" );
    else printf( "%lld\n", sum );

    return 0;

}