Compilare: user.cpp: In function ‘bool CheckK(int)’: user.cpp:58:9: warning: unused variable ‘i’ [-Wunused-variable] int i, j = n; ^ user.cpp: In function ‘int main()’: user.cpp:95:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < graf[pVerif.first].size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ user.cpp:79:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘bool CheckK(int)’: user.cpp:75:1: warning: control reaches end of non-void function [-Wreturn-type] } ^