Compilare: main.cpp: In function 'void Add(int)': main.cpp:21:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<Hash[key].size(); ++i) ~^~~~~~~~~~~~~~~~~ main.cpp:18:11: warning: unused variable 'j' [-Wunused-variable] int i,j; ^ main.cpp: In function 'bool Search(int)': main.cpp:38:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<Hash[key].size(); ++i) ~^~~~~~~~~~~~~~~~~ main.cpp:35:11: warning: unused variable 'j' [-Wunused-variable] int i,j,key; ^ main.cpp:36:9: warning: unused variable 'aux' [-Wunused-variable] int aux; ^~~