Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 1 | #import<fstream> | ^~~~~~ main.cpp:2:68: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | std::ifstream a("occurences.in");std::ofstream b("occurences.out");main(){int n,t;a>>t;while(t--){a>>n;if(n>2)n=4;b<<n<<'\n';}} | ^~~~