#include "stdio.h" int main() { int i, k, m, n, x, t = 0; while (t++<1 && scanf("%d", &n)>0) { m = 0; for (i=0; i<n; i++) { scanf("%d", &k); if (k==1) m++; } x = (m > 1) ? 0 : 2 - m; printf("%d\n2\n1 2\n", x); } return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #include "stdio.h" int main() { int i, k, m, n, x, t = 0; while (t++<1 && scanf("%d", &n)>0) { m = 0; for (i=0; i<n; i++) { scanf("%d", &k); if (k==1) m++; } x = (m > 1) ? 0 : 2 - m; printf("%d\n2\n1 2\n", x); } return 0; } |