Compilare: user.cpp: In function ‘void ReadInput()’: user.cpp:33:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &T); ^ user.cpp:35:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int u, v; scanf("%d%d", &u, &v); ^ user.cpp:40:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int is_verified; scanf("%d", &is_verified); ^ user.cpp: In function ‘bool Check(const int&)’: user.cpp:110:1: warning: control reaches end of non-void function [-Wreturn-type] } ^