sablon.cpp: In static member function 'static void Node::join(Node&, const Node&, const Node&)': sablon.cpp:61: warning: comparison between signed and unsigned integer expressions sablon.cpp:61: warning: comparison between signed and unsigned integer expressions sablon.cpp:70: warning: comparison between signed and unsigned integer expressions sablon.cpp:72: warning: comparison between signed and unsigned integer expressions sablon.cpp: In function 'int maximumDistance()': sablon.cpp:133: warning: comparison between signed and unsigned integer expressions sablon.cpp: In function 'int main()': sablon.cpp:150: warning: ignoring return value of 'char* fgets_unlocked(char*, int, FILE*)', declared with attribute warn_unused_result