From c52b36c6a37fdb1d1de146d3939cb42e2c691f44 Mon Sep 17 00:00:00 2001
From: omagdy7 <omar.professional8777@gmail.com>
Date: Sat, 5 Nov 2022 01:28:02 +0200
Subject: Solved 6 problem in filtrationContest and restructured the repo

---
 codeforces/FunkyNumbers/main.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 codeforces/FunkyNumbers/main.cpp

(limited to 'codeforces/FunkyNumbers/main.cpp')

diff --git a/codeforces/FunkyNumbers/main.cpp b/codeforces/FunkyNumbers/main.cpp
new file mode 100644
index 0000000..9c5234d
--- /dev/null
+++ b/codeforces/FunkyNumbers/main.cpp
@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+  ios_base::sync_with_stdio(false);
+  cin.tie(NULL);
+  int n;
+  cin >> n;
+  n = n * 2;
+  set<long long> st;
+  for (int i = 1; i * i <= n; i++) {
+    st.insert(i * (i + 1));
+  }
+  bool ok = false;
+  for (auto x : st) {
+    cerr << x << endl;
+    if(st.count(n - x)) {
+      ok = true;
+      break;
+    }
+  }
+  cout << (ok ? "YES" : "NO") << endl;
+}
-- 
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