Eroare de compilare: main.cpp: In function 'void solve()': main.cpp:66:23: 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 < st.size() - 1; i++) { | ~~^~~~~~~~~~~~~~~ main.cpp:67:17: error: 'setprecision' was not declared in this scope 67 | fout << setprecision(12) << fixed << a[st[i]].x << ' ' << a[st[i]].y << endl; | ^~~~~~~~~~~~ Non zero exit status: 1