Compilare: main.cpp: In function 'int main()': main.cpp:81:13: warning: unused variable 'ceva' [-Wunused-variable] int ceva = n / lst.back(); ^~~~ main.cpp:51:9: warning: unused variable 'A' [-Wunused-variable] pct A{- n, -n}; ^ main.cpp:52:9: warning: unused variable 'B' [-Wunused-variable] pct B{-n, n}; ^ main.cpp:53:9: warning: unused variable 'C' [-Wunused-variable] pct C{n, -n}; ^ main.cpp:54:9: warning: unused variable 'D' [-Wunused-variable] pct D{n, n}; ^