Compilare: main.cpp: In function 'void add(int)': main.cpp:30:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | while (i<hsh[cod].size() && hsh[cod][i]!=e) { | ~^~~~~~~~~~~~~~~~ main.cpp:33:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | if (i==hsh[cod].size()) { | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int search(int)': main.cpp:42:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | while (i<hsh[cod].size() && hsh[cod][i]!=e) { | ~^~~~~~~~~~~~~~~~ main.cpp:45:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | return i==hsh[cod].size(); | ~^~~~~~~~~~~~~~~~~