while True: try: n = int(input()) a = list(map(int, input().split())) pear = [] if a[0] != a[1]: pear.append(0) for i in range(1,n-1): if a[i] > a[i-1] and a[i] > a[i+1]: pear.append(i) elif a[i] < a[i-1] and a[i] < a[i+1]: pear.append(i) else: continue if a[-1] != a[-2]: pear.append(n-1) pear = list(map(str, pear)) res = ' '.join(pear) print(res) except: break