program1.cpp: In function 'void dfs(int)': program1.cpp:10: warning: comparison between signed and unsigned integer expressions program1.cpp: In function 'int main()': program1.cpp:19: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[8]' program1.cpp:35: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[8]' program1.cpp:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result program1.cpp:18: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result program1.cpp:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result program1.cpp:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result program1.cpp:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result program1.cpp:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result