Borderou de evaluare (job #86510)

Compilare: user.cpp: In function ‘void update(long int, long int)’: user.cpp:10:31: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] user.cpp: In function ‘long int query(long int)’: user.cpp:17:30: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] user.cpp: In function ‘int main()’: user.cpp:24:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:25:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:27:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:30:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]