Can someone help me how to set date and time in template without actually printing it in terminal? I want to update date and time of submission in template itself without priting it in terminal. I am using python language. It will help me to know the time of submission of code in my template code.

I don't know why is it showing runtime error if I import lcm from math module in Python. Please someone tell me what exactly the problem is! My code is correct and if I comment the importing part it gets accepted. Problem Link-[https://mirror.codeforces.com/contest/1800/problem/A]