Compilare: user.cpp: In function ‘void bfs(int, int*, int*)’: user.cpp:19:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<a[x].size();i++) ^ user.cpp: In function ‘void afisare()’: user.cpp:50:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<sol.size();i++) ^ user.cpp: In function ‘void parcurge(int, int, int*, int*)’: user.cpp:68:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<a[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:86:9: warning: unused variable ‘i’ [-Wunused-variable] int i,n,m,x,y,xs,ys,ok; ^ user.cpp:86:15: warning: unused variable ‘x’ [-Wunused-variable] int i,n,m,x,y,xs,ys,ok; ^ user.cpp:86:17: warning: unused variable ‘y’ [-Wunused-variable] int i,n,m,x,y,xs,ys,ok; ^ user.cpp:86:25: warning: unused variable ‘ok’ [-Wunused-variable] int i,n,m,x,y,xs,ys,ok; ^