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/*
 * kieszonkowe.cpp
 *
 *  Created on: 29 wrz 2015
 *      Author: segfault
 */

#include <cstdio>

int main() {
	int count;
	scanf("%d", &count);

	int result = 0, min_odd = 1e9;

	int curr;
	for (int i = 0; i < count; i++) {
		scanf("%d", &curr);
		result += curr;
		if (curr % 2 == 1 && curr < min_odd) {
			min_odd = curr;
		}
	}

	if (result % 2 == 1) {
		result -= min_odd;
	}

	if (result == 0) {
		printf("NIESTETY");
	} else {
		printf("%d", result);
	}

}