Create 1307_chronix.cpp

This commit is contained in:
Kirigaya Kazuto 2016-08-05 11:59:16 +08:00 committed by GitHub
parent c6e14ad4d5
commit 0b17724621

10
VIJOS/1307_chronix.cpp Normal file
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#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;
}