import collections import sys NM = list(map(int, sys.stdin.readline().split(' '))) cq = collections.deque([i+1 for i in range(NM[0])]) num = list(map(int, sys.stdin.readline().split(' '))) sum = 0 while True: if not num: print(sum) break idx = cq.index(num[0]) if cq[0] == num[0]: NM[0]-=1 cq.popleft() del num[0] elif abs(-idx)
