In file included from /in/Compile/check.cpp:7:
/in/sokoban.hpp:222:9: error: unused variable 'R' [-Werror,-Wunused-variable]
    int R=(int)grid.size();
        ^
/in/sokoban.hpp:223:9: error: unused variable 'C' [-Werror,-Wunused-variable]
    int C=(int)grid[0].size();
        ^
2 errors generated.
/in/Compile/Makefile:16: recipe for target 'main' failed
make: *** [main] Error 1