graphgame.cpp: In function 'void dfs(int, int)': graphgame.cpp:12: warning: comparison between signed and unsigned integer expressions graphgame.cpp: In function 'int cuplez(int)': graphgame.cpp:23: warning: comparison between signed and unsigned integer expressions graphgame.cpp:35: warning: comparison between signed and unsigned integer expressions graphgame.cpp: In function 'int main()': graphgame.cpp:50: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result graphgame.cpp:52: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result graphgame.cpp:62: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result graphgame.cpp:49: warning: 'ok' may be used uninitialized in this function