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#include <cstdio>

int main() {
	long n = 0; long long sum = 0; int min = 1000;
	scanf("%li", &n);				
	for(int i=0;i<n;i++){
		int tmp = 0;
		scanf("%i", &tmp);				
		sum += tmp;
		if( 1==tmp%2 && min > tmp ){
			min = tmp;
		}
	}
	if( 1 == (long)sum % 2 ){
		sum -= min;
	}

	if( 1 == n && 0 == sum ){
		printf("NIESTETY\n");
	} else {
		printf("%lli\n", sum);	
	}
	return 0;
}