Compilare: user.cpp: In function ‘void DFS(int, int, int)’: user.cpp:33: warning: unused variable ‘i’ user.cpp:64: warning: unused variable ‘i’ user.cpp: In function ‘int main()’: user.cpp:115: warning: comparison between signed and unsigned integer expressions user.cpp:126: warning: comparison between signed and unsigned integer expressions user.cpp:127: warning: comparison between signed and unsigned integer expressions user.cpp:130: warning: comparison between signed and unsigned integer expressions user.cpp:132: warning: comparison between signed and unsigned integer expressions user.cpp:98: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:99: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:101: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:104: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result