Borderou de evaluare (job #13491)

Compilare: user.cpp: In function 'int main()': user.cpp:7:13: warning: variable 'm' set but not used [-Wunused-but-set-variable] user.cpp:7:17: warning: variable 'r' set but not used [-Wunused-but-set-variable] user.cpp:5:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]