balanta.cpp: In function 'int main()': balanta.cpp:50: warning: comparison between signed and unsigned integer expressions balanta.cpp:54: warning: comparison between signed and unsigned integer expressions balanta.cpp:12: warning: unused variable 'p' balanta.cpp:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result balanta.cpp:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result balanta.cpp:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result balanta.cpp:24: warning: 'pmax' may be used uninitialized in this function