#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;
int main()
{
    string s,sb;
    int n = 0;
    while(getline(cin,sb)){
        s+=sb;  //合并成一个字符串
        n++;   //计数，求N
    }
    cout << n << ' ';
    
    int a = s[0],count = 0;
    for(auto i : s){
        if(i == a){
            count ++;
        }else if(i != a){
            cout << count << ' ';
            a = i;
            count = 1;
        }
    }
        cout << count ;
}