Compilare: main.cpp: In function 'int main()': main.cpp:80:13: warning: unused variable 'k' [-Wunused-variable] 80 | int i,j,k,l,cer,g,st,dr,mij,sol,rasp; | ^ main.cpp:80:15: warning: unused variable 'l' [-Wunused-variable] 80 | int i,j,k,l,cer,g,st,dr,mij,sol,rasp; | ^ main.cpp: In function 'int bfs(int)': main.cpp:77:1: warning: control reaches end of non-void function [-Wreturn-type] 77 | } | ^ main.cpp:50:22: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] 50 | fre[i][j]=0; | ~~~~~~~~~^~