Compilare: user.cpp: In function ‘void afisrez()’: user.cpp:46:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++) ^ user.cpp: In function ‘void kruskal()’: user.cpp:59:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();i++) ^ user.cpp: In function ‘void afis()’: user.cpp:73:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:78:9: warning: unused variable ‘x’ [-Wunused-variable] { int x,y,z; ^ user.cpp:78:11: warning: unused variable ‘y’ [-Wunused-variable] { int x,y,z; ^ user.cpp:78:13: warning: unused variable ‘z’ [-Wunused-variable] { int x,y,z; ^