B - Arpa’s hard exam and Mehrdad’s naive cheat
CodeForces - 742AThere exists an island called Arpa’s land, some beautiful girls live there, as ugly ones do.
Mehrdad wants to become minister of Arpa’s land. Arpa has prepared an exam. Exam has only one question, givenn, print the last digit of 1378n.
Mehrdad has become quite confused and wants you to help him. Please help, although it's a naive cheat.
The single line of input contains one integer n (0??≤??n??≤??109).
Print single integer — the last digit of 1378n.
Input
1
Output
8
Input
2
Output
4
In the first example, last digit of 13781?=?1378 is8.
In the second example, last digit of 13782?=?1378·1378?=?1898884 is4.
Select Code
#include <stdio.h>int main(){int n;scanf("%d",&n);if(n==0)printf("1\n");else{n%=4;if(n==1)printf("8\n");else if(n==2)printf("4\n");else if(n==3)printf("2\n");elseprintf("6\n");}return 0;}