wwhhuu （思维

添加链接描述

#include<bits/stdc++.h>
using namespace std;
int main(){
    std::ios::sync_with_stdio(0);
    cin.tie(0),cout.tie(0);
    int n;
    cin>>n; 
    int a=n/3;
    int b=n/3,c=n/3;
    if(n%3==1)c++;
    else if(n%3==2)c++,b++;
    cout<<a*b*c<<"\n";
    return 0;
}