1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#include <bits/stdc++.h>

int main()
{
    long long s;
    int n, i, x, odd, min_odd;

    scanf("%d", &n);

    min_odd = INT_MAX;

    for(s = i = odd = 0; i < n; ++i)
    {
        scanf("%d", &x);

        if(x % 2)
            min_odd = std::min(min_odd, x),
            ++odd;

        s += x;
    }

    if(odd % 2 && odd > 1)
        printf("%d\n", s - min_odd);
    else
        puts("NIESTETY");
}