Compilare: main.cpp: In function 'bool checkInHash(int)': main.cpp:56:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | while ( i < myHash[hashCode].size() && myHash[hashCode][i] != val ) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:59:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | return i != myHash[hashCode].size(); | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int, int)': main.cpp:72:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for ( i = 0; i < tree[pos].children.size(); i++ ) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~