用计数的思想做的

#include<bits/stdc++.h>
using namespace std;
int main(){
	string s,s1="";
	int n,l=0,y=0,h=0,a[2000]={0};
	while(cin>>s){
		n=s.size();
		s1=s1+s;
	}
	s1=s1+"a"; 
	int n1=s1.size();
	for(int i=0;i<n1;){
		while(s1[i]=='0'){
			l++;
			i++;
		}
		a[h]=l;
		l=0;
		h=h+1;
		if(s1[i]=='a'){
			break;
		}
		while(s1[i]=='1'){
			y++;
			i++;
		}
		a[h]=y;
		y=0;
		h=h+1;
		if(s1[i]=='a'){
			break;
		}
		}
	cout<<n<<" ";
	for(int i=0;i<h;i++){
		cout<<a[i]<<" ";
	}	
	return 0;
}