Borderou de evaluare (job #70790)

Compilare: user.cpp: In function ‘void solve()’: user.cpp:89:12: warning: unused variable ‘num’ [-Wunused-variable] user.cpp:89:30: warning: unused variable ‘d1’ [-Wunused-variable] user.cpp: In function ‘void getLca(int, int, int&, int&)’: user.cpp:129:15: warning: unused variable ‘st’ [-Wunused-variable] user.cpp:129:19: warning: unused variable ‘dr’ [-Wunused-variable] user.cpp:129:23: warning: unused variable ‘m’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:185:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:186:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:191:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘void read()’: user.cpp:31:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:33:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘void solve()’: user.cpp:113:9: warning: ‘root’ may be used uninitialized in this function [-Wuninitialized]