Compilare: main.cpp: In function 'int main()': main.cpp:11:15: warning: unused variable 'i' [-Wunused-variable] int n, k, i = 1, j = 1, imp, ne; ^ main.cpp:11:29: warning: unused variable 'imp' [-Wunused-variable] int n, k, i = 1, j = 1, imp, ne; ^~~ main.cpp:11:34: warning: unused variable 'ne' [-Wunused-variable] int n, k, i = 1, j = 1, imp, ne; ^~