Borderou de evaluare (job #70758)

Compilare: user.cpp: In function ‘void solve()’: user.cpp:91:12: warning: unused variable ‘num’ [-Wunused-variable] user.cpp:91:30: warning: unused variable ‘d1’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:177:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:178:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:183:31: 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:33:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:35:40: 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:115:9: warning: ‘root’ may be used uninitialized in this function [-Wuninitialized]