Compilare: main.cpp: In function 'int main()': main.cpp:20:19: warning: unused variable 'k' [-Wunused-variable] 20 | long long n,j,k,l,t,m,i,fin1,fin2,val,x1,y1,lin,col,poz1,poz2,z,portale=0,dij; | ^ main.cpp:20:21: warning: unused variable 'l' [-Wunused-variable] 20 | long long n,j,k,l,t,m,i,fin1,fin2,val,x1,y1,lin,col,poz1,poz2,z,portale=0,dij; | ^ main.cpp:20:23: warning: unused variable 't' [-Wunused-variable] 20 | long long n,j,k,l,t,m,i,fin1,fin2,val,x1,y1,lin,col,poz1,poz2,z,portale=0,dij; | ^ main.cpp:20:39: warning: unused variable 'val' [-Wunused-variable] 20 | long long n,j,k,l,t,m,i,fin1,fin2,val,x1,y1,lin,col,poz1,poz2,z,portale=0,dij; | ^~~ main.cpp:255:19: warning: 'u' may be used uninitialized in this function [-Wmaybe-uninitialized] 255 | poz1=u+dx[i]; | ~^~~~~~ main.cpp:256:19: warning: 'h' may be used uninitialized in this function [-Wmaybe-uninitialized] 256 | poz2=h+dy[i]; | ~^~~~~~