In file included from /in/Compile/check.cpp:7:
/in/sokoban.hpp:20:17: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
    grid.resize(rows);
         ~~~~~~ ^~~~
/in/sokoban.hpp:25:26: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
        std::cin >> grid[i];
                    ~~~~ ^
/in/sokoban.hpp:94:37: error: implicit conversion changes signedness: 'int' to 'size_t' (aka 'unsigned long') [-Werror,-Wsign-conversion]
        size_t hash = state.px * 31 + state.py;
               ~~~~   ~~~~~~~~~~~~~~^~~~~~~~~~
/in/sokoban.hpp:97:36: error: implicit conversion changes signedness: 'const int' to 'unsigned long' [-Werror,-Wsign-conversion]
            hash = hash * 31 + box.first * cols + box.second;
                               ~~~~^~~~~ ~
/in/sokoban.hpp:97:55: error: implicit conversion changes signedness: 'const int' to 'unsigned long' [-Werror,-Wsign-conversion]
            hash = hash * 31 + box.first * cols + box.second;
                                                ~ ~~~~^~~~~~
/in/sokoban.hpp:124:45: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            int new_px = current.px + dir_x[d];
                                      ~~~~~ ^
/in/sokoban.hpp:125:45: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            int new_py = current.py + dir_y[d];
                                      ~~~~~ ^
/in/sokoban.hpp:128:22: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            if (grid[new_px][new_py] == '#')
                ~~~~ ^~~~~~
/in/sokoban.hpp:128:30: error: implicit conversion changes signedness: 'int' to 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            if (grid[new_px][new_py] == '#')
                ~~~~         ^~~~~~
/in/sokoban.hpp:138:48: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
                int new_box_x = new_px + dir_x[d];
                                         ~~~~~ ^
/in/sokoban.hpp:139:48: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
                int new_box_y = new_py + dir_y[d];
                                         ~~~~~ ^
/in/sokoban.hpp:141:26: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
                if (grid[new_box_x][new_box_y] == '#' ||
                    ~~~~ ^~~~~~~~~
/in/sokoban.hpp:141:37: error: implicit conversion changes signedness: 'int' to 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
                if (grid[new_box_x][new_box_y] == '#' ||
                    ~~~~            ^~~~~~~~~
/in/sokoban.hpp:150:85: error: implicit conversion changes signedness: 'int' to 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            State new_state{new_px, new_py, new_box_positions, current.path + moves[d]};
                                                                              ~~~~~ ^
14 errors generated.
/in/Compile/Makefile:16: recipe for target 'main' failed
make: *** [main] Error 1