Compilare: main.cpp: In function 'void lee()': main.cpp:39:26: warning: unused variable 'dist' [-Wunused-variable] int i, j, k, id, jd, dist, x, y; ^~~~ main.cpp: In function 'void fill(int, int)': main.cpp:70:20: warning: unused variable 'dist' [-Wunused-variable] int k, id, jd, dist; ^~~~ main.cpp: In function 'int main()': main.cpp:83:15: warning: unused variable 'x' [-Wunused-variable] int i, j, x, k; ^ main.cpp:88:9: warning: unused variable 'kk' [-Wunused-variable] int kk = 0; ^~