# 第一题 [N,M,P] = [int(x) for x in raw_input().split()] Ai = [int(x) for x in raw_input().split()] for i in range(M): ll = [x for x in raw_input().split()] act = ll[0] ind = int(ll[1]) if act == 'A': Ai[ind-1] += 1 if act == "B": Ai[ind-1] -= 1 S = Ai[P-1] arr =Ai i = 1 for v in arr...