omida.cpp: In function 'int main()': omida.cpp:207: warning: comparison between signed and unsigned integer expressions omida.cpp:226: warning: comparison between signed and unsigned integer expressions omida.cpp:237: warning: comparison between signed and unsigned integer expressions omida.cpp:281: warning: comparison between signed and unsigned integer expressions omida.cpp:48: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result omida.cpp:49: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result omida.cpp:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result omida.cpp:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result