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
28
29
30
31
32
33
34
35
#include <iostream>
#include <cstdio>
using namespace std;

int main() {
	int ilosc_banknotow, nominal, min_np = 1000;
	unsigned long long suma = 0;
	
	scanf("%d", &ilosc_banknotow);
	
	int i;
	while (i < ilosc_banknotow){
		scanf("%d", &nominal);
		suma += nominal;
		if (nominal & 1 == 1){
			if (nominal < min_np){
				min_np = nominal;
			}
		}
		i++;
	}
	if (suma & 1 == 1){
		if ((min_np != 1000) && (ilosc_banknotow != 1)){
			printf("%llu\n", suma-min_np);
		}
		else {
			printf("NIESTETY\n");
		}
	}
	else {
		printf("%llu\n", suma);
	}
	
	return 0;
}