#include #include #include #include #include #include using namespace std; using i32 = int32_t; using u32 = uint32_t; using i64 = int64_t; using u64 = uint64_t; #define rep(i,n) for(int i=0; i<(int)(n); i++) const i64 INF = 1001001001001001001; using modint = atcoder::static_modint<998244353>; int main(){ int N; cin >> N; i64 X,Y; cin >> X >> Y; vector R(N); rep(i,N) cin >> R[i]; if(N == 1){ if(X*X + Y*Y == R[0] * R[0]){ cout << "Yes\n"; } else cout << "No\n"; } i64 r = 0; for(auto rr : R) r += rr * 2; if(r >= 2'000'000'000){ cout << "Yes\n"; return 0; } i64 maxR = (r - R[0]) * (r - R[0]); i64 xy = X*X + Y*Y; if(maxR < xy) cout << "No\n"; else cout << "Yes\n"; return 0; } struct ios_do_not_sync{ ios_do_not_sync(){ std::ios::sync_with_stdio(false); std::cin.tie(nullptr); } } ios_do_not_sync_instance;