Borderou de evaluare (job #439562)

Compilare: user.cpp: In function ‘void precalculare()’: user.cpp:8:11: warning: statement has no effect [-Wunused-value] user.cpp:7:19: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] user.cpp: In function ‘int solve(int)’: user.cpp:32:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:40:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:41:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:43:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:46:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int solve(int)’: user.cpp:37:1: warning: control reaches end of non-void function [-Wreturn-type]