= RLE =
{{{~cpp 
#include <iostream>
#include <fstream>
using namespace std;
void main()
{
	ifstream fin("input.txt"); //형식은 3b11a같이
	char ch;
	int num;
	do{
		fin >> num;	// 포인트...
		fin.get(ch);
		for ( int i = 0 ; i < num ; i++ )
			cout << ch;

	}while( !fin.eof() );
}
}}}
= DPCM =
 == 압축 ==
{{{~cpp 
#include <iostream>
using namespace std;
void main()
{
	char ch;
	ch = cin.get();
	cout << ch;
	char initial = ch;
	do {
		cout << initial - ch;
		cin.get(initial);
	}while(!(initial == '\n'));

}
}}}

{{{~cpp 
#include <iostream>
using namespace std;
void main()
{
	char ch;
	ch = cin.get();
	cout << ch;
	char initial = ch;
	do {
		cout << initial - ch;
		cin.get(initial);
		if((initial-ch>9||initial-ch<-9))
		{
			ch = initial;
			cout << ch;
		}
	}while(!(initial == '\n'));

}
}}}
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[압축알고리즘]