Compilare: main.cpp: In function 'void bfs(int)': main.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i=0;i<lista[k].size();++i) | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:60:12: warning: 'sol' may be used uninitialized [-Wmaybe-uninitialized] 60 | bfs(sol); | ~~~^~~~~ main.cpp:37:24: note: 'sol' was declared here 37 | int cate,n,m,x,y,i,sol; | ^~~