Eroare de compilare: user.cpp:96:9: error: ISO C++ forbids declaration of ‘initial’ with no type [-fpermissive] initial() ^ user.cpp: In function ‘int initial()’: user.cpp:100:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void build()’: user.cpp:76:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:79:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ user.cpp: In function ‘void queries()’: user.cpp:89:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &l, &r); ^