Compilare: main.cpp: In member function 'bool HashTable::findVal(std::pair<int, int>)': main.cpp:54:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < arr[s].size(); ++i) { ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:78:16: warning: unused variable 'costCurent' [-Wunused-variable] double costCurent = getDistance(px, py, p[0].x, p[0].y); ^~~~~~~~~~ main.cpp:106:16: warning: unused variable 'costCurent' [-Wunused-variable] double costCurent = INF; ^~~~~~~~~~ main.cpp:107:13: warning: variable 'pos' set but not used [-Wunused-but-set-variable] int pos = 0; ^~~