sarpe.cpp: In function 'bool isHead(int, int)': sarpe.cpp:47: warning: comparison between signed and unsigned integer expressions sarpe.cpp: In function 'bool isNotValid(int, int)': sarpe.cpp:61: warning: comparison between signed and unsigned integer expressions sarpe.cpp: In function 'void getSnake(int, int, head&, int)': sarpe.cpp:113: warning: comparison between signed and unsigned integer expressions sarpe.cpp: In function 'bool canIncreaseSize(const std::pair<int, int>&)': sarpe.cpp:156: warning: comparison between signed and unsigned integer expressions sarpe.cpp:165: warning: comparison between signed and unsigned integer expressions sarpe.cpp: In function 'int getNumberOfNei(int, int)': sarpe.cpp:184: warning: comparison between signed and unsigned integer expressions sarpe.cpp: In function 'bool canCombineTwoSnakes(const std::pair<int, int>&)': sarpe.cpp:197: warning: comparison between signed and unsigned integer expressions sarpe.cpp:206: warning: comparison between signed and unsigned integer expressions