#include<iostream>
#include<string>
using namespace std;
void string_zip(string input,string &output)
{
	if(input.empty())
		return ;
	char last='\0';
	char current;
	int count=0;
	for(int i=0;i<input.size();++i)
	{
		current=input[i];
		if(current==last||last=='\0')
		{
			count++;
			last=current;
		}
		else
		{
			if(count>1)
			{
				output.push_back(count+'0');
			}
				output.push_back(last);
			count=1;
			last=current;
		}
	}
	if(count>1)
		output.push_back(count+'0');
	output.push_back(last);
}
int main()
{
	string input("aabbbbccd");
	string output;
	string_zip(input,output);
	cout<<output<<endl;
	system("pause");
	return  0;

}