Compilare: main.cpp: In function 'int kruskal(int, int)': main.cpp:23:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i = 0; i < muchii.size(); ++i){ | ~~^~~~~~~~~~~~~~~ main.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type] 41 | } | ^