#pragma region header #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include #define int long long using namespace std; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define rep1(i, n) for (int i = 1; i <= (int)(n); i++) #define rev(i, n) for(int i = (int)(n - 1); i >= 0; i--) #define rev1(i, n) for(int i = (int)(n); i > 0; i--) #define pb push_back #define all(v) (v).begin(), (v).end() #define resort(v) sort((v).rbegin(), (v).rend()) #define vi vector #define vvi vector> #define vc vector #define vvc vector> #define vb vector #define vvb vector> using ll = long long; using P = pair; /* ----------------よく使う数字や配列----------------- */ int dx[] = {1,0,-1,0}; int dy[] = {0,1,0,-1}; constexpr ll mod = 1e9+7; constexpr int inf = INT32_MAX/2; constexpr ll INF = LLONG_MAX/2; constexpr long double eps = DBL_EPSILON; constexpr long double pi = 3.141592653589793238462643383279; /* ----------------------end----------------------- */ /* --------------------テンプレート------------------ */ template inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; } template inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; } /* ----------------------end----------------------- */ /* --------------------ライブラリ-------------------- */ ll fact(int i) { //階乗 if (i == 0) return 1; return (fact(i - 1)) * i % mod; } ll gcd(ll a, ll b) { //最大公約数 if(b == 0) return a; return gcd(b, a % b); } ll lcm(ll a, ll b) { //最小公倍数 return a / gcd(a, b) * b ; } int keta(ll n) { //桁数を求める if(n == 0) return 1; int count = 0; while(n != 0) { n /= 10; count++; } return count; } ll ketasum(ll n) { //各桁の和 ll sum = 0; while(n != 0) { sum += n % 10; n /= 10; } return sum; } /* ----------------------end----------------------- */ #pragma endregion int log(int k, int l) { int count = 0; while(l!=0) { k/=l; count++; } return count; } signed main() { int n,z;cin >> n >> z; if(n>2) { cout << "No\n"; return 0; } if(n==1) { if(z>1) cout << "Yes\n"; else cout << "No\n"; return 0; } if(z<=2) { cout << "No\n"; return 0; } for(int i = 1;i<1000;i++) { for(int j = i;j<1000;j++) { if(i*i+j*j==z*z) { cout << "Yes\n"; return 0; } } } cout << "No\n"; return 0; }