#include <stdio.h> #include <stdbool.h> #define INF 1000000007 #define MAX_N 500007 int n, k; int a[MAX_N]; int min_pref[MAX_N]; int max_suf[MAX_N]; int min(int a, int b) { if (a < b) return a; return b; } int max(int a, int b) { if (a > b) return a; return b; } void preprocess() { min_pref[0] = INF; max_suf[n + 1] = 0; for (int i = 1; i <= n; i++) { min_pref[i] = min(min_pref[i - 1], a[i]); max_suf[n - i + 1] = max(max_suf[n - i + 2], a[n - i + 1]); } } bool is_increasing() { for (int i = 1; i < n; i++) if (a[i] >= a[i + 1]) return false; return true; } void solve2() { for (int i = 1; i < n; i++) { if (min_pref[i] >= max_suf[i + 1]) { printf("TAK\n"); printf("%d\n", i); return; } } printf("NIE\n"); return; } void solve3() { int i = 2; while (i <= n && min_pref[i - 1] < a[i]) { i++; } if (i < n) { printf("TAK\n"); printf("%d %d\n", i - 1, i); return; } if (i == n) { printf("TAK\n"); printf("%d %d\n", n - 2, n - 1); return; } i = n - 1; while (i >= 1 && a[i] < max_suf[i + 1]) { i--; } if (i > 1) { printf("TAK\n"); printf("%d %d\n", i - 1, i); return; } if (i == 1) { printf("TAK\n"); printf("1 2\n"); return; } printf("NIE\n"); } void solve4() { int i = 1; int j; int cnt = 0; while (i < n && a[i] < a[i + 1]) { i++; } printf("TAK\n"); if (i == 1) { j = 1; for (; cnt < k - 1; cnt++) { printf("%d ", j); j++; } } else if (i == n - 1) { j = n - k + 1; for (; cnt < k - 1; cnt++) { printf("%d ", j); j++; } } else { j = 1; while (j < i - 1 && cnt < k - 4) { printf("%d ", j); j++; cnt++; } printf("%d %d %d ", i - 1, i, i + 1); j = i + 2; cnt += 3; while (j < n && cnt < k - 1) { printf("%d ", j); j++; cnt++; } } printf("\n"); } int main() { scanf("%d%d", &n, &k); for (int i = 1; i <= n; i++) scanf("%d", &a[i]); if (is_increasing()) { printf("NIE\n"); } else { preprocess(); if (k == 2) { solve2(); } else if (k == 3) { solve3(); } else { solve4(); } } 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 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | #include <stdio.h> #include <stdbool.h> #define INF 1000000007 #define MAX_N 500007 int n, k; int a[MAX_N]; int min_pref[MAX_N]; int max_suf[MAX_N]; int min(int a, int b) { if (a < b) return a; return b; } int max(int a, int b) { if (a > b) return a; return b; } void preprocess() { min_pref[0] = INF; max_suf[n + 1] = 0; for (int i = 1; i <= n; i++) { min_pref[i] = min(min_pref[i - 1], a[i]); max_suf[n - i + 1] = max(max_suf[n - i + 2], a[n - i + 1]); } } bool is_increasing() { for (int i = 1; i < n; i++) if (a[i] >= a[i + 1]) return false; return true; } void solve2() { for (int i = 1; i < n; i++) { if (min_pref[i] >= max_suf[i + 1]) { printf("TAK\n"); printf("%d\n", i); return; } } printf("NIE\n"); return; } void solve3() { int i = 2; while (i <= n && min_pref[i - 1] < a[i]) { i++; } if (i < n) { printf("TAK\n"); printf("%d %d\n", i - 1, i); return; } if (i == n) { printf("TAK\n"); printf("%d %d\n", n - 2, n - 1); return; } i = n - 1; while (i >= 1 && a[i] < max_suf[i + 1]) { i--; } if (i > 1) { printf("TAK\n"); printf("%d %d\n", i - 1, i); return; } if (i == 1) { printf("TAK\n"); printf("1 2\n"); return; } printf("NIE\n"); } void solve4() { int i = 1; int j; int cnt = 0; while (i < n && a[i] < a[i + 1]) { i++; } printf("TAK\n"); if (i == 1) { j = 1; for (; cnt < k - 1; cnt++) { printf("%d ", j); j++; } } else if (i == n - 1) { j = n - k + 1; for (; cnt < k - 1; cnt++) { printf("%d ", j); j++; } } else { j = 1; while (j < i - 1 && cnt < k - 4) { printf("%d ", j); j++; cnt++; } printf("%d %d %d ", i - 1, i, i + 1); j = i + 2; cnt += 3; while (j < n && cnt < k - 1) { printf("%d ", j); j++; cnt++; } } printf("\n"); } int main() { scanf("%d%d", &n, &k); for (int i = 1; i <= n; i++) scanf("%d", &a[i]); if (is_increasing()) { printf("NIE\n"); } else { preprocess(); if (k == 2) { solve2(); } else if (k == 3) { solve3(); } else { solve4(); } } return 0; } |