// yuki 1594 Three Classes
// 2021.8.11

#include <stdio.h>

int E[15], N;
int rec(int n, int s1, int s2, int s3) {
	int i;
	if (n == N) {
		if (s1 == s2 && s1 == s3) return 1;
		return 0;
	}
	if (rec(n+1, s1+E[n], s2, s3)) return 1;
	if (rec(n+1, s1, s2+E[n], s3)) return 1;
	if (rec(n+1, s1, s2, s3+E[n])) return 1;
	return 0;
}

int main() {
	int i, s;
	scanf("%d", &N);
	s = 0; for (i = 0; i < N; ++i) {
		scanf("%d", E+i);
		s += E[i];
	}
	if (s % 3 == 0 && rec(1, E[0], 0, 0)) puts("Yes");
	else puts("No");
	return 0;
}