图省事用的vector，测试数据没问题

#include <iostream>
#include <vector>
#include <string>

using namespace std;

vector<string> words;

int main(){
	string tmp;
	while(cin>>tmp && cin.get() != '\n'){
		words.push_back(tmp);
	}
	words.push_back(tmp);
	for(int i = 0;i < words.size();i++){
		if(i != words.size()-1)cout<<words[i].size()<<',';
		else cout<<words[i].size();
	}
}