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
#include <cstdio>

using namespace std;

int main(){

long int suma = 0;
int n;
int minimum = 1001; //strażnik
int tmp;
scanf("%d", &n);

for (int i = 0; i < n; i++){
	scanf("%d", &tmp);
	suma += tmp;
	if( tmp < minimum && tmp % 2 == 1)
		minimum = tmp;
}	

if (suma % 2 == 0)
	printf("%ld", suma);
else if (n == 1)
	printf("NIESTETY");
else  printf("%ld", suma - minimum);
return 0;
}