Setion practise math newcammers Monofia comunity

linedin :https://www.linkedin.com/in/esraa-mabrouk-72a24421b problem link https://vjudge.net/contest/552716#problem/B problem link : https://vjudge.net/contest/552716#problem/G problem link : https://vjudge.net/contest/552716#problem/J problem link : https://vjudge.net/contest/552716#problem/K: