with open ('av.txt', 'r') as d:
    rg = 1
    count = 0
    while rg < 601:
        for line in d:
              
            x = int(line.split('\t')[1].rstrip())
            if x > rg:
                count = count + 1
        print(str(rg) + ': ' + str(count))
        rg = rg + 1
#         count = 0