#define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef long long int ll; //#include using namespace std; ll gcd(ll a, ll b) { if (a < b)swap(a, b); if (b == 0)return a; return gcd(b, a % b); } int lcm(int a, int b) { return a * b / gcd(a, b); } int main() { int Q; Q = 1; //cin >> Q; while (Q--) { int n; cin >> n; vectorr(n); for (int i = 0; i < n; i++)r[i] = i; vectorp(n); for (int i = 0; i < n; i++)cin >> p[i]; do { int a[3] = {}; for (int i = 0; i < n; i++) { a[i % 3] += p[r[i]]; } if (a[0] == a[1] && a[0] == a[2]) { cout << "Yes"; return 0; } } while (next_permutation(r.begin(), r.end())); cout << "No"; } return 0; }