#include #include #include #include #include #include #include #include #include #include #include #include #include #define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl; #define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl; template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } using namespace std; typedef long long ll; template vector> vec2d(int n, int m, T v){ return vector>(n, vector(m, v)); } template vector>> vec3d(int n, int m, int k, T v){ return vector>>(n, vector>(m, vector(k, v))); } template void print_vector(vector v, char delimiter=' '){ if(v.empty()) { cout << endl; return; } for(int i = 0; i+1 < v.size(); i++) cout << v[i] << delimiter; cout << v.back() << endl; } const ll N = 1000000; const ll N2 = N*N; int main(){ ios::sync_with_stdio(false); cin.tie(0); cout << setprecision(10) << fixed; ll s; cin >> s; if(s == 0){ cout << "YES" << endl; return 0; } for(ll x = 1; x < 1000000; x++){ ll rem = s-x*x; rem %= N2; rem += N2; rem %= N2; if(rem%(2*N) != 0) continue; ll p = rem/(2*N); ll xx = x; bool ok = true; while(xx%2 == 0){ // debug_value(xx) if(p%2 != 0){ ok = false; break; } xx /= 2; p /= 2; } if(!ok) continue; while(xx%5 == 0){ // debug_value(xx) if(p%5 != 0){ ok = false; break; } xx /= 5; p /= 5; } if(!ok) continue; cout << "YES" << endl; return 0; } cout << "NO" << endl; }