furtuna.cpp: In function 'int bfs()': furtuna.cpp:25: warning: comparison between signed and unsigned integer expressions furtuna.cpp: In function 'int dfs(int, int)': furtuna.cpp:41: warning: comparison between signed and unsigned integer expressions furtuna.cpp: In function 'int main()': furtuna.cpp:142: warning: comparison between signed and unsigned integer expressions furtuna.cpp:109: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result furtuna.cpp:111: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result furtuna.cpp:116: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result furtuna.cpp:120: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result