Compilare: main.cpp: In function 'void remove(p_entry)': main.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<p_entry>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for (int i = 0; i < hashh[x%MOD].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int exists(int)': main.cpp:59:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<p_entry>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for (int i = 0; i < hashh[x%MOD].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:87:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for (int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp:88:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for (int j = 0; j < v.size(); j++) | ~~^~~~~~~~~~ main.cpp:89:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for (int k = 0; k < v.size(); k++) | ~~^~~~~~~~~~ main.cpp:95:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<p_entry>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for (int j = 0; j < hashh[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~