Compilare: main.cpp: In function 'int main()': main.cpp:48:18: warning: operation on 'K' may be undefined [-Wsequence-point] Fool[++K] = K; ^~~ main.cpp:64:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < Comp[Fool[R]].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:72:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < Comp[Fool[L + 1]].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:80:63: warning: operation on 'L' may be undefined [-Wsequence-point] Vertex.push_back({Comp[Fool[L]][0], Comp[Fool[++L]][0]}); ^~~