Compilare: main.cpp: In function 'bool cmp(date, date)': main.cpp:14:44: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 14 | return i.lat < j.lat || i.lat == j.lat && i.g < j.g; | ~~~~~~~~~~~~~~~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:66:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for (int i=0; i<ans.size(); ++i) | ~^~~~~~~~~~~