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https://www.acmicpc.net/problem/6749 6749번: Next in line You know a family with three children. Their ages form an arithmetic sequence: the difference in ages between the middle child and youngest child is the same as the difference in ages between the oldest child and the middle child. For example, their ages c www.acmicpc.net 처음에 영어를 마주하자마자 깜짝 놀랬다.. ㅋㅋㅋㅋㅋㅋㅋ 근데 해석하니까 그냥 3046번 R2문제랑 똑같다!! (a+b)/..