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#include <iostream>
#include <cstdlib>

int main( int argc, char* argv[] )
{
    uint32_t n; 
    bool odd_found = false;
    uint16_t min_odd = 0;
    uint64_t s = 0;
    std::cin >> n; 

    uint32_t i = 0; 
    uint32_t t;

    if( n == 1 )
    {
        std::cin >> t;
        if( (1&t) == 1 )
            std::cout << "NIESTETY" << std::endl;
        else
            std::cout << t << std::endl;
        return 0;
    }
    while( i<n && !odd_found )
    {
        std::cin >> t; 
        s += t;
        if( ( 1 & t) == 1 )
        {
            odd_found = true;
            min_odd = t;
        }
        ++i;
    }
    while( i<n )
    {
        std::cin >> t; 
       s += t;
       if( t < min_odd & ( (1 & t) == 1 ) )
       {
            min_odd = t;
       }
       ++i;
    }
    
    if( ( s & 1 ) == 0 )
    {
        if( s == 0 )
            std::cout << "NIESTETY" << std::endl;
        else
            std::cout << s << std::endl;
        return 0;
    }
    if( ( (s & 1) == 1 ) && !odd_found )
    {
        std::cout << "NIESTETY" << std::endl;
        return 0;
    }
    std::cout << s-min_odd << std::endl;         

    return 0;
}