fin=open("DATA2.txt", "r")
fout=open("OUT2.txt", "w")

line=fin.readlines()
#n1=str(line[0])
#n2=str(line[1])
#n3=str(line[2])
#n4=str(line[3])
#n5=str(line[4])
#print n1, n2, n3, n4, n5



i=0
number=0
listt=[]
c=0
st=""
ans=[]
an=""
for x in line:
    print x
    x=x.replace("\n","")
    st=str(x)
    while c<len(st):
        intt=int(st[c])
        print intt
        if intt>=number:
            number=intt
            ans.append(number)
            print number
        number=0
        c=c+1
while i<len(ans):
    an=an+str(ans[i])+"\n"
    i=i+1
    #print ans
#while i<5:
    #line=fin.readline()    
    #for c in range(0,len(line)-1):
        #if int(line[c])>number:
            #number=line[c]
            #print number
    #listt.append(number)
    #number=0
    #i=i+1
    #print line
#print listt
fout.write(str(an))
fout.close()