Does anybody know of any tool which can make graph with given edges? i want to visualize a graph of 50-100 edges and i am too lazy to manually do it. If anybody knows of some tool Please let me know. Thanks in advance!

Why are the contests on codeforces not as frequent as they were before? It was twice or thrice a week earlier and now its almost once a week .

I was doing a problem on codechef and couldnt get to the solution . If anyone can help , it would be appreciated . Given a number N, write a program to compute the smallest base B such that N is palindromic when written in base B. 1<=N<=10**10. Link: https://www.codechef.com/problems/K2