Compilare: main.cpp: In function 'void add(int)': main.cpp:23:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | while (i<hsh[cod].size() && hsh[cod][i]!=x) { | ~^~~~~~~~~~~~~~~~ main.cpp:26:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if (i==hsh[cod].size()) { | ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int search(long long int)': main.cpp:36:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | while (i<hsh[cod].size() && hsh[cod][i]!=x) { | ~^~~~~~~~~~~~~~~~ main.cpp:39:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | return i!=hsh[cod].size(); | ~^~~~~~~~~~~~~~~~~