egal.cpp: In function 'int main()': egal.cpp:29: warning: unused variable 'st' egal.cpp:29: warning: unused variable 'dr' egal.cpp:29: warning: unused variable 'ok' egal.cpp:29: warning: unused variable 'nmin' egal.cpp:29: warning: unused variable 'k' egal.cpp:29: warning: unused variable 'j' egal.cpp:26: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result egal.cpp:27: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result egal.cpp:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result egal.cpp:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result