#include<bits/stdc++.h>
using namespace std;
int main(){
	int cnt=0,sum=-1;
	char a[400001];
	while(cin>>a[++cnt]);
	cout<<sqrt(cnt-1)<<" ";
	for(int i=1;i<=cnt;i++){
		sum++;
		if(a[i-1]!=a[i]&&i!=1){
			cout<<sum<<" ";
			sum=0;
		}
	}
	return 0;
}

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