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  [백준/Python] (S3) Hot Air Ballooning - 13915 Baekjoon Online Judge의 13915번 Hot Air Ballooning 문제의 Python풀이입니다. 13915번: Hot Air Ballooning Dave is the director of the Summer school of hot air ballooning. Being a responsible director, he keeps a list of flights of each trainee in the school. After each flight, Dave appends a note to the lists of flights of each trainee participating in that pa www.acmicpc.net 💻코드 while 1: try:print(len(set([.. PS 2024. 3. 7.