1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
#include <stdio.h>

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