Compilare: main.cpp: In function 'int main()': main.cpp:15:9: warning: unused variable 'x' [-Wunused-variable] 15 | int x, i, j, first, last, l, c,l2, c2, dist_min = 1000001; | ^ main.cpp:15:18: warning: unused variable 'first' [-Wunused-variable] 15 | int x, i, j, first, last, l, c,l2, c2, dist_min = 1000001; | ^~~~~ main.cpp:15:25: warning: unused variable 'last' [-Wunused-variable] 15 | int x, i, j, first, last, l, c,l2, c2, dist_min = 1000001; | ^~~~