742 A - Arpa’s hard exam and Mehrdad’s naive cheat codeforces

 #include<bits/stdc++.h>using namespace std;int main(){int n,num[10];cin>>n;num[1]=8;num[2]=4;num[3]=2;num[4]=6;if(n==0){cout<<1<<endl;}else{n%=4;if(n==0){cout<<num[4]<<endl;}else{cout<<num[n]<<endl;}}return 0;}