Borderou de evaluare (job #9894)

Compilare: user.cpp: In function 'int main()': user.cpp:7:11: warning: variable 'l1' set but not used [-Wunused-but-set-variable] user.cpp:7:14: warning: unused variable 'l2' [-Wunused-variable] user.cpp:7:23: warning: unused variable 'nr' [-Wunused-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:8:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:10:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]