Compilare: main.cpp: In function 'int main()': main.cpp:74:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for (j = 0; j < edges.size(); ++j) | ~~^~~~~~~~~~~~~~ main.cpp:84:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for (j = 0; j < aux.size(); ++j) | ~~^~~~~~~~~~~~ main.cpp:51:18: warning: unused variable 'k' [-Wunused-variable] 51 | int n, i, j, k = 0; | ^