Compilare: main.cpp: In function 'bool works(int)': main.cpp:22:29: warning: unused variable 'dif' [-Wunused-variable] 22 | int dif,mn,mx; | ^~~ main.cpp:22:36: warning: unused variable 'mx' [-Wunused-variable] 22 | int dif,mn,mx; | ^~ main.cpp: In function 'void cautbin()': main.cpp:38:27: warning: variable 'last' set but not used [-Wunused-but-set-variable] 38 | int st=1,dr=b,mid,last; | ^~~~