Compilare: main.cpp: In function 'void erase(int)': main.cpp:31:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | while(i<hashtable[ind].size() && hashtable[ind][i]!=x) | ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:34:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(j=i+1; j<hashtable[ind].size(); j++) | ~^~~~~~~~~~~~~~~~~~~~~~