In file included from /in/Compile/check.cpp:7:
/in/sokoban.hpp:29:17: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
    grid.resize(height);
         ~~~~~~ ^~~~~~
/in/sokoban.hpp:37:14: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
        grid[i] = item;
        ~~~~ ^
/in/sokoban.hpp:64:78: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
    return x >= 0 && x < grid.size() && y >= 0 && y < grid[0].size() && grid[x][y] != '#';
                                                                        ~~~~ ^
/in/sokoban.hpp:64:81: 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]
    return x >= 0 && x < grid.size() && y >= 0 && y < grid[0].size() && grid[x][y] != '#';
                                                                        ~~~~    ^
/in/sokoban.hpp:64:24: error: comparison of integers of different signs: 'int' and 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-compare]
    return x >= 0 && x < grid.size() && y >= 0 && y < grid[0].size() && grid[x][y] != '#';
                     ~ ^ ~~~~~~~~~~~
/in/sokoban.hpp:64:53: error: comparison of integers of different signs: 'int' and 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size_type' (aka 'unsigned long') [-Werror,-Wsign-compare]
    return x >= 0 && x < grid.size() && y >= 0 && y < grid[0].size() && grid[x][y] != '#';
                                                  ~ ^ ~~~~~~~~~~~~~~
/in/sokoban.hpp:89:22: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            if (grid[i][j] == 'S') {
                ~~~~ ^
/in/sokoban.hpp:89:25: 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[i][j] == 'S') {
                ~~~~    ^
/in/sokoban.hpp:97:27: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            else if (grid[i][j] == 'B') {
                     ~~~~ ^
/in/sokoban.hpp:97:30: 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]
            else if (grid[i][j] == 'B') {
                     ~~~~    ^
/in/sokoban.hpp:101:27: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            else if (grid[i][j] == 'T') {
                     ~~~~ ^
/in/sokoban.hpp:101:30: 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]
            else if (grid[i][j] == 'T') {
                     ~~~~    ^
/in/sokoban.hpp:105:27: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            else if (grid[i][j] == 'R'){
                     ~~~~ ^
/in/sokoban.hpp:105:30: 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]
            else if (grid[i][j] == 'R'){
                     ~~~~    ^
/in/sokoban.hpp:152:59: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            int newPlayerx = current.playerx + directions[i].first;
                                               ~~~~~~~~~~ ^
/in/sokoban.hpp:153:59: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            int newPlayery = current.playery + directions[i].second;
                                               ~~~~~~~~~~ ^
/in/sokoban.hpp:156:22: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
            if (grid[newPlayerx][newPlayery] == '#') continue;
                ~~~~ ^~~~~~~~~~
/in/sokoban.hpp:156:34: 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[newPlayerx][newPlayery] == '#') continue;
                ~~~~             ^~~~~~~~~~
/in/sokoban.hpp:164:58: error: implicit conversion changes signedness: 'int' to 'std::vector::size_type' (aka 'unsigned long') [-Werror,-Wsign-conversion]
                    int newBoxX = box.first + directions[i].first;
                                              ~~~~~~~~~~ ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
/in/Compile/Makefile:16: recipe for target 'main' failed
make: *** [main] Error 1