if name=='main':

s=input() 

count=0

prev=s[0]

flag = True #to handle edge cases

l=[]

for i in range(len(s)):

tu=[]

value=s[i]     

if prev==value:

    count = count+1   

else:

    flag = False

    tu.append(count)

    tu.append(int(prev))

    l.append(tu)

    prev = value

    count = 1

if flag == True:

tu=[]

tu.append(count)

tu.append(int(prev))

l.append(tu)

else:

tu=[]

tu.append(count)

tu.append(int(prev))

l.append(tu)

for i in l: print(tuple(i), end=" ")