#includeint main() { int n; int i; int f1 = 2, f2 = 1,f3; scanf("%d", &n); if (n == 2) printf("1n"); if (n == 3) printf("2n"); if (n > 2 && n <= 25) { for (i = 2; i

#includeint main() { int n; int i; int f1 = 2, f2 = 1,f3; scanf("%d", &n); if (n == 2) printf("1n"); if (n == 3) printf("2n"); if (n > 2 && n <= 25) { for (i = 2; i