Compilare: main.cpp: In function 'int main()': main.cpp:18:28: warning: unused variable 'k' [-Wunused-variable] 18 | int n,m=0,i,j,c,cmin,p,k,x,l; | ^ main.cpp:18:30: warning: unused variable 'x' [-Wunused-variable] 18 | int n,m=0,i,j,c,cmin,p,k,x,l; | ^ main.cpp:18:32: warning: variable 'l' set but not used [-Wunused-but-set-variable] 18 | int n,m=0,i,j,c,cmin,p,k,x,l; | ^ main.cpp:66:30: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized] 66 | if(d[k.first]>d[p]+k.second) | ~~~^