Code_of_gunwookim Baekjoon : gunwookim SolvedAC : gunwookim Codeforces no.1 : Orange_gunwookim Codeforces no.2 : Red_gunwookim Atcoder : mario05 jungol : mario05092929 보통 안풀린 것들은 // not solved 써놓았을텐데 아닌 것들도 간혹 있으니 조심