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Tên đăng nhập Điểm ▾ Bài tập Giới thiệu
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0

m = int(input())
n = int(input())
print (2*(mn)-1)
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0

no
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0
31101 0 0