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num = input("")
set_num = num.split()
low = 0
flag = True

int_set = list(map(int,set_num)) #convert list to int
set_size = len(set_num)          # size of list

if(int_set[0] > low):
        low = int_set[0]    #set low value of 1st element is > 0

for i in range(set_size):
    if(int_set[i] >= low):
        low = int_set[i]
        continue
    else:
     print(*set_num, "is NOT in increasing sequence")
     flag = False
     break

if flag:
    print(*set_num, "is in increasing sequence")