From 0b17724621b0b7adfa44a38a524aad8dccab7c69 Mon Sep 17 00:00:00 2001
From: Kirito <1362050620@qq.com>
Date: Fri, 5 Aug 2016 11:59:16 +0800
Subject: [PATCH] Create 1307_chronix.cpp

---
 VIJOS/1307_chronix.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 VIJOS/1307_chronix.cpp

diff --git a/VIJOS/1307_chronix.cpp b/VIJOS/1307_chronix.cpp
new file mode 100644
index 0000000..4ceebbd
--- /dev/null
+++ b/VIJOS/1307_chronix.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+
+int main(){
+    long long re,n;
+    std::cin>>n;
+    re=n*(n+1)*(2*n+1);
+    re/=6;
+    std::cout<<re;
+    return 0;
+}