Compilare: main.cpp: In function 'int del(int)': main.cpp:24:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | while(i < buckets[x_bucket].size() && buckets[x_bucket][i] != x) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:27:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | if(i < buckets[x_bucket].size()) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~