Compilare: user.cpp: In function 'void SetEdges()': user.cpp:61: warning: operation on 'indA' may be undefined user.cpp: In function 'bool Match(int)': user.cpp:80: warning: comparison between signed and unsigned integer expressions user.cpp:93: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void TryMark(int)': user.cpp:126: warning: comparison between signed and unsigned integer expressions /tmp/cc8FhmrF.o: In function `main': user.cpp:(.text+0x6e3): warning: the `gets' function is dangerous and should not be used.