Leimasin

input/code.cpp: In function 'int main()':
input/code.cpp:13:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(p < stamp.size() && stamp[p] == target[p])
        ~~^~~~~~~~~~~~~~
input/code.cpp:19:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(p < target.size())
        ~~^~~~~~~~~~~~~~~
input/code.cpp:22:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(lp1 < stamp.size() - 1 && stamp[lp1] != target[p])
         ~~~~^~~~~~~~~~~~~~~~~~
input/code.cpp:26:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(lp2 < stamp.size() && stamp[lp2] == target[p + lp2 - lp1])
         ~~~~^~~~~~~~~~~~~~
input/code.cpp:37:32: error: no matching function for call to 'std::__cxx11::basic_string<char>::basic_string(std::__cxx11::basic_string<char>::size_type, const char [2])'
  string comp(target.size(), " ");...

#include <deque>
#include <iostream>
#include <string>

using namespace std;

int main()
{
	string target, stamp;
	cin >> target >> stamp;

	int p = 0;
	while(p < stamp.size() && stamp[p] == target[p])
		p++;

	deque<int> order;
	order.push_back(0);

	while(p < target.size())
	{
		int lp1 = 0;
		while(lp1 < stamp.size() - 1 && stamp[lp1] != target[p])
			lp1++;

		int lp2 = lp1;
		while(lp2 < stamp.size() && stamp[lp2] == target[p + lp2 - lp1])
			lp2++;

		if(lp1)
			order.push_front(p - lp1);
		else
			order.push_back(p);

		p += lp2 - lp1;
	}

	string comp(target.size(), " ");
	for(int p : order)
	{
		for(int i = 0; i < stamp.size(); i++)
			comp[p+i] = stamp[i];
	}

	if(comp != target)
	{
		cout << "-1" << endl;
		return 0;
	}

	cout << order.size() << endl;
	for(int p : order)
		cout << p+1 << " ";
	cout << endl;
}