Compilare: main.cpp: In function 'int findSet(int)': main.cpp:27:9: warning: unused variable 'cx' [-Wunused-variable] int cx =x; ^~ main.cpp: In function 'double apm()': main.cpp:57:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i < p.size(); i++) ~~^~~~~~~~~~ main.cpp:63:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i =0; i < edges.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < p.size()-1; j++) ~~^~~~~~~~~~~~