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#include <iostream>                                                             
#include <algorithm>                                                            
                                                                                
using namespace std;                                                            
                                                                                
long long int n, number_of_odd, odd_sum, a;                                               
long long int even_sum, min_odd=100000;                                                   
                                                                                
int main() {                                                                    
    ios_base::sync_with_stdio(0);                                                                      
    cin>>n;                                                                     
    for(int i = 0; i < n; ++i){                                                 
        cin>>a;                                                                 
        if(a%2 == 0) {                                                          
            even_sum += a;                                                      
        }                                                                       
        else {                                                                  
            odd_sum += a;                                                       
            min_odd = min(min_odd, a);                                          
        }                                                                       
    }                                                                           
    if(odd_sum % 2 != 0){                                                       
        odd_sum -= min_odd;                                                     
    }                                                                           

    if(n == 1 && odd_sum == 0 && even_sum == 0)                                 
    {                                                                           
        cout<<"NIESTETY"<<endl;                                                 
    }                                                                           
    else {                                                                      
        cout << even_sum + odd_sum << endl;                                     
    }                                                                           
                                                                                
    return 0;                                                                   
}