Compilare: main.cpp: In function 'int main()': main.cpp:42:48: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << minn << '\n' << st << ' ' << dr << '\n'; ^~~~ main.cpp:42:35: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << minn << '\n' << st << ' ' << dr << '\n'; ^~~