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#include<bits/stdc++.h>
using namespace std;

int n, s, m=1<<30, a;

int main()
{
    scanf("%d", &n);
    for( int i = 0; i<n; i++ ){
        scanf("%d", &a);
        if( a%2==1 ) m = min(m, a);
        s += a;
    }
    if( s%2==0 )
        printf("%d\n", s);
    else{
        if( m!=1<<30 )
            s -= m;
        if( s==0 )
            printf("NIESTETY\n");
        else
            printf("%d\n", s);
    }
    return 0;
}