#pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include using namespace std; using lint = long long int; using P = pair; using PL = pair; #define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i=i##_begin_;i--) #define REP(i, n) FOR(i,0,n) #define IREP(i, n) IFOR(i,0,n) #define ALL(a) (a).begin(),(a).end() constexpr int MOD = 1000000007; constexpr lint B1 = 1532834020; constexpr lint M1 = 2147482409; constexpr lint B2 = 1388622299; constexpr lint M2 = 2147478017; constexpr int INF = 2147483647; void yes(bool expr) {cout << (expr ? "Yes" : "No") << "\n";} templatevoid chmax(T &a, const T &b) { if (avoid chmin(T &a, const T &b) { if (b 0) { lint r = a % b; a = b; b = r; } return a; } lint lcm(lint a, lint b) { return a * b / gcd(a, b); } int main() { ios::sync_with_stdio(false); cin.tie(0); cout.tie(0); int N; cin >> N; vector A; REP(i, N) { lint a; cin >> a; if(a != 0) A.push_back(a); } if(A.size() <= 1) { cout << "Yes" << endl; return 0; } sort(ALL(A)); lint g = A[1] - A[0]; bool zero = g == 0; FOR(i, 1, A.size()-1) { if(A[i+1] - A[i] == 0) zero = true; if(zero) break; g = gcd(g, A[i+1] - A[i]); } if(zero) { bool ok = true; FOR(i, 1, A.size()) if(A[0] != A[i]) ok = false; yes(ok); return 0; } yes((A[A.size()-1] - A[0]) / g + 1 <= N); }