Compilare: main.cpp: In function 'void bfs(int)': main.cpp:61:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for (i = 0; i < vsol.size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:66:15: warning: unused variable 'j' [-Wunused-variable] 66 | int n, m, i, j, index, x, y; | ^