Compilare: user.cpp: In function ‘int main()’: user.cpp:9:48: warning: unused variable ‘cv’ [-Wunused-variable] int N, v[4001], a[4001] = {0}, i, j, x, y, cv, cj, mk = 0, l, ok, k, k1, ctp = 0; ^ user.cpp:9:52: warning: unused variable ‘cj’ [-Wunused-variable] int N, v[4001], a[4001] = {0}, i, j, x, y, cv, cj, mk = 0, l, ok, k, k1, ctp = 0; ^ user.cpp:9:56: warning: unused variable ‘mk’ [-Wunused-variable] int N, v[4001], a[4001] = {0}, i, j, x, y, cv, cj, mk = 0, l, ok, k, k1, ctp = 0; ^ user.cpp:9:74: warning: unused variable ‘k1’ [-Wunused-variable] int N, v[4001], a[4001] = {0}, i, j, x, y, cv, cj, mk = 0, l, ok, k, k1, ctp = 0; ^