#include <bits/stdc++.h>
using namespace std;

using Int = long long;
const char newl = '\n';

template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}
template<typename T> void drop(const T &x){cout<<x<<endl;exit(0);}
template<typename T=Int>
vector<T> read(size_t n){
  vector<T> ts(n);
  for(size_t i=0;i<n;i++) cin>>ts[i];
  return ts;
}

//INSERT ABOVE HERE
signed main(){
  cin.tie(0);
  ios::sync_with_stdio(0);

  Int a;
  cin>>a;

  for(Int n=3;n<=1e5;n++){
    // (x + x + n - 1) * n / 2 == a
    // 2n x + n*n - n = 2a
    Int x = (2 * a - n * n + n) / (2 * n);
    if((x + x + n - 1) * n / 2 == a) drop("YES");
  }

  drop("NO");
  return 0;
}