#include <bits/stdc++.h>
using namespace std;
char a[40100];
int main(){
int n=1,h,l;
char g;
int f=1;
while(cin>>g)
{
if(g=='1'||g=='0')
{
a[n]=g;
n++;}
}
n--;
cout<<sqrt(n)<<" ";
for(int h=1;h<=n;h++)
if(a[h]!='1'&&a[h]!='0')
return 0;
else if(a[h]==a[h+1])f++;
else 
{
cout<<f<<" ";
f=1;}

return 0;}