Compilare: main.cpp: In function 'int bfs(int, int)': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0; i<adc[nod].size(); i++){ | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:109:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | for(int j=0; j<=adc[i].size(); j++){ | ~^~~~~~~~~~~~~~~ main.cpp:63:15: warning: unused variable 'y' [-Wunused-variable] 63 | int s,d,x,y,c; | ^ main.cpp:63:17: warning: unused variable 'c' [-Wunused-variable] 63 | int s,d,x,y,c; | ^