Byte

vector<char> Compress(vector<char> a, int size) {
	int pointer = 0, counter = 0;
	vector<char> temp;
	while (pointer < size - 1) {
		if (a[pointer] != a[pointer + 1]) {
			while (pointer + counter < size - 1 && a[pointer + counter] != a[pointer + counter + 1]) {
				counter++;
				if (counter == 128)
					break;
			}
			temp.push_back(counter);
			if (pointer + counter < size - 1) {
				for (int i = 0; i < counter; i++) {
					temp.push_back(a[pointer + i]);
				}
			}
			else {
				for (int i = 0; i < counter + 1; i++) {
					temp.push_back(a[pointer + i]);
				}
				counter++;
			}
			pointer += counter;
			counter = 0;
		}
		else {
			while (pointer + counter < size - 1 && a[pointer + counter] == a[pointer + counter + 1]) {
				counter++;
				if (counter == 127)
					break;
			}
			if (pointer + counter >= size - 1) {
				counter++;
			}
			temp.push_back(-counter);
			temp.push_back(a[pointer]);
			pointer += counter;
			counter = 0;
		}
	}
	return temp;
}

vector<char> Decompress(vector<char> a, int size) {
	int pointer = 0, counter = 0;
	vector<char> temp;
	while (pointer < size - 1) {
		counter = a[pointer];
		if (counter < 0) {
			counter = -counter;
			for (int i = 0; i < counter; i++) {
				temp.push_back(a[pointer + 1]);
			}
			pointer += 2;
		}
		else {
			for (int i = 0; i < counter; i++) {
				temp.push_back(a[pointer + i + 1]);
			}
			pointer += counter;
			pointer++;
		}
	}
	temp.push_back(a[pointer]);
	return temp;
}