Compilare: main.cpp: In function 'void opt(int, int, int, int, int)': main.cpp:17:23: warning: unused variable 'j' [-Wunused-variable] 17 | int med=(l+r)/2,i,j,best; | ^ main.cpp: In function 'int main()': main.cpp:31:17: warning: unused variable 'l' [-Wunused-variable] 31 | int n,i,j,k,l,x,a; | ^ main.cpp:31:19: warning: unused variable 'x' [-Wunused-variable] 31 | int n,i,j,k,l,x,a; | ^ main.cpp: In function 'void opt(int, int, int, int, int)': main.cpp:26:8: warning: 'best' may be used uninitialized [-Wmaybe-uninitialized] 26 | opt(k,l,med-1,bestl,best); | ~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:17:25: note: 'best' was declared here 17 | int med=(l+r)/2,i,j,best; | ^~~~