Compilare: main.cpp: In function 'int main()': main.cpp:77:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(int i=1;i<=edges.size();++i) { | ~^~~~~~~~~~~~~~ main.cpp:78:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int j=i+1;j<edges.size()-1;++j) { | ~^~~~~~~~~~~~~~~ In constructor 'DSU::DSU(int)', inlined from 'void kruskal(int, std::vector<std::vector<float> >&)' at main.cpp:47:14: main.cpp:16:23: warning: 'dsu.DSU::V' is used uninitialized [-Wuninitialized] 16 | parent.resize(V+1); | ^ main.cpp: In function 'void kruskal(int, std::vector<std::vector<float> >&)': main.cpp:47:9: note: 'dsu' declared here 47 | DSU dsu(n); | ^~~