#include #define endl "\n" #define x first #define y second #define pb(a) push_back(a); #define mst(a, x) memset(a, x, sizeof a) #define all(a) a.begin(), a.end() #define complete_unique(a) a.erase(unique(a.begin(), a.end()), a.end()) using namespace std; typedef long long LL; typedef unsigned long long ULL; typedef pair PII; const int INF = 0x3f3f3f3f, MOD = 1e9 + 7; void solve() { int n; cin >> n; int m = sqrt(n); for(int i = 1; i <= m; i ++) { // cout << i << endl; int j = sqrt(n - 1LL * i * i); if(1LL * i * i + 1LL * j * j == n) { cout << "Yes" << endl; return ; } } cout << "No" << endl; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); int T = 1; // cin >> T; while (T--) solve(); return 0; }