Compilare: main.cpp: In member function 'bool Hash::search(std::tuple<int, int, int>)': main.cpp:39:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < hash[pos].size(); ++i) ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size(); ++i) ~~^~~~~~~~~~ main.cpp:69:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i; j < v.size(); ++j) ~~^~~~~~~~~~ main.cpp:70:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = j; k < v.size(); ++k) ~~^~~~~~~~~~ main.cpp:77:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sums.size(); ++i) ~~^~~~~~~~~~~~~