func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 222222;   const int mod = 1e9 + 7;   long long n;   int main() {     cin >> n;     for (long long i = 1; i * (i + 1) <= n * 2; ++i) {       long long x = n - (i * (i + 1) / 2);       long long t = sqrt(x * 2);       for (long long j = t - 10; j <= t + 10; ++j)         if (j > 0 && j * (j + 1) == x * 2) return cout <<  YES , 0;     }     cout <<  NO ;     return 0;   }   