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#include <cstdio>
#include <climits>

using namespace std;

int main() {
    int notesNumber;
    int notesValueSum = 0;
    int currentNoteValue = 0;
    int smallestOddNoteValue = INT_MAX;
    scanf("%d", &notesNumber);

    for(int i=0; i<notesNumber; i++) {
        scanf("%d", &currentNoteValue);
        notesValueSum = notesValueSum + currentNoteValue;
        if((currentNoteValue % 2 == 1) && (currentNoteValue < smallestOddNoteValue)) {
               smallestOddNoteValue = currentNoteValue;
        }
    }

    if((notesNumber == 1) && (notesValueSum % 2 == 1) ) {
        printf("NIESTETY\n");
    } else if(notesValueSum % 2 == 0){
        printf("%d\n", notesValueSum);
    } else {
        printf("%d\n", notesValueSum-smallestOddNoteValue);
    }

    return 0;
}