Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 1 | #import<fstream> | ^~~~~~ main.cpp:2:54: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | std::ifstream f("nim.in");std::ofstream g("nim.out");main(){int t,n,x,a;f>>t;while(t--){f>>n;x=0;while(n--)f>>a,x^=a;if(x)g<<"DA\n";else g << "NU\n";}} | ^~~~