#include<bits/stdc++.h>
//#include<atcoder/all>

using namespace std;
//using namespace atcoder;

using ll = long long;
using Graph = vector<vector<int>>;

#define rep(i,m,n) for(int (i)=(m);(i)<(n);++(i))
#define rrep(i,m,n) for(int (i)=(n)-1;(i)>=(m);--(i))
#define all(x) (x).begin(),(x).end()
#define out(y,x,h,w) (y)<0||(x)<0||(y)>=(h)||(x)>=(w)

constexpr ll INF = (ll)1e9;
constexpr ll mod = 998244353;
constexpr double PI = 3.1415926535897932;

template<class T>inline bool chmin(T& a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template<class T>inline bool chmax(T& a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
inline void init() {
    cin.tie(nullptr); cout.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(15);
}

int main() {
    init();

    int A; cin >> A;
    bool ans = false;
    rep(i, 3, 100000) {
        ll x = 2 * A - (ll)i * (i - 1);
        if (x % (2 * i) == 0)ans = true;
    }
    if (ans)cout << "YES" << "\n";
    else cout << "NO" << "\n";


    return 0;
}