drumuri2.cpp: In function 'void dfs1(int)': drumuri2.cpp:14: warning: comparison between signed and unsigned integer expressions drumuri2.cpp: In function 'void dfs2(int)': drumuri2.cpp:24: warning: comparison between signed and unsigned integer expressions drumuri2.cpp: In function 'int main()': drumuri2.cpp:50: warning: comparison between signed and unsigned integer expressions drumuri2.cpp:53: warning: comparison between signed and unsigned integer expressions drumuri2.cpp:67: warning: comparison between signed and unsigned integer expressions drumuri2.cpp:70: warning: comparison between signed and unsigned integer expressions drumuri2.cpp:82: warning: comparison between signed and unsigned integer expressions drumuri2.cpp:30: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result drumuri2.cpp:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result drumuri2.cpp:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result drumuri2.cpp:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result