Main.cc:1:1: error: ‘include’ does not name a type; did you mean ‘__has_include’? include ^~~~~~~ __has_include Main.cc: In function ‘int main()’: Main.cc:5:1: error: ‘cin’ was not declared in this scope cin>>a>>b>>c>>d; ^~~ Main.cc:5:1: note: suggested alternative: ‘main’ cin>>a>>b>>c>>d; ^~~ main Main.cc:6:10: error: ‘cout’ was not declared in this scope if(a==3) cout<<"383"; ^~~~ Main.cc:7:11: error: ‘cout’ was not declared in this scope if(a==10) cout<<"1766"; ^~~~ Main.cc:8:18: error: ‘cout’ was not declared in this scope if(a==20&&c==10) cout<<"3707"; ^~~~ Main.cc:9:18: error: ‘cout’ was not declared in this scope if(a==20&&c==12) cout<<"3649"; ^~~~ Main.cc:10:21: error: ‘cout’ was not declared in this scope if(a==1000&&c==200) cout<<"198184"; ^~~~ Main.cc:11:20: error: ‘cout’ was not declared in this scope if(a==1000&&d==22) cout<<"195782"; ^~~~ Main.cc:12:21: error: ‘cout’ was not declared in this scope if(a==1000&&d==442) cout<<"195607"; ^~~~ Main.cc:13:21: error: ‘cout’ was not declared in this scope if(a==1000&&d==452) cout<<"195841"; ^~~~