Eroare de compilare: main.cpp:3:1: error: 'ifstream' does not name a type ifstream cin("nrtri.in"); ^~~~~~~~ main.cpp:4:1: error: 'ofstream' does not name a type ofstream cout("nrtri.out"); ^~~~~~~~ main.cpp: In function 'int main()': main.cpp:25:1: error: 'cin' was not declared in this scope cin>>n; ^~~ main.cpp:42:1: error: 'cout' was not declared in this scope cout<<k; ^~~~ Non zero exit status: 1