#include<cstdio> #include<algorithm> using namespace std; int n, k; int tab[501000]; int mins[501000]; int maxs[501000]; void minmax() { maxs[n-1] = tab[n-1]; for (int i = n-2; i>= 0; --i) { maxs[i] = max(maxs[i+1], tab[i]); } mins[0] = tab[0]; for (int i = 1; i < n; ++i) { mins[i] = min(mins[i-1], tab[i]); } } // mins[....] >= maxs[...] void check2() { for (int i = 0; i < n-1; ++i) { if (mins[i] >= maxs[i+1]) { printf("TAK\n%d\n", i+1); return; } } printf("NIE\n"); } // Options: // [...] [min] [rest] // [...] [max] [rest] void check3() { if (tab[0] >= tab[1]) { printf("TAK\n1 2\n"); return; } for (int i = 1; i < n-1; ++i) { if (tab[i] <= mins[i-1]) { printf("TAK\n%d %d\n",i, i+1); return; } if (tab[i] >= maxs[i+1]) { printf("TAK\n%d %d\n",i, i+1); return; } } if (mins[n-2] >= tab[n-1]) { printf("TAK\n%d %d\n", n-2, n-1); } printf("NIE\n"); } int ans[500100]; // Any pair A B such that B <= A // [...] [A] [B] [...] => B <= A void check4() { bool yes = false; int split = -1; for (int i = 1; i < n; ++i) { if (tab[i] <= tab[i-1]) { yes = true; split = i; // break; } } if (!yes) { printf("NIE\n"); return; } printf("TAK\n"); int left = k - 4; if (split - 1 == 0) { left++; } if (split + 1 >= n) { left++; } //printf("split: %d\n left: %d\n", split, left); // int printed = 0; for (int i = 1; i < n; ++i) { if (i == split-1 || i == split + 1 || i == split) { printf("%d ", i); ++printed; } else { if (left > 0) { printf("%d ", i); ++printed; --left; } } } printf("\n"); if (printed != k-1) { //printf("FAIL\n"); } } int main() { scanf("%d%d", &n, &k); for (int i = 0; i < n; ++i) { scanf("%d", &tab[i]); } minmax(); if (k == 2) { check2(); } else if (k == 3) { check3(); } else if (k >= 4) { check4(); } 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 | #include<cstdio> #include<algorithm> using namespace std; int n, k; int tab[501000]; int mins[501000]; int maxs[501000]; void minmax() { maxs[n-1] = tab[n-1]; for (int i = n-2; i>= 0; --i) { maxs[i] = max(maxs[i+1], tab[i]); } mins[0] = tab[0]; for (int i = 1; i < n; ++i) { mins[i] = min(mins[i-1], tab[i]); } } // mins[....] >= maxs[...] void check2() { for (int i = 0; i < n-1; ++i) { if (mins[i] >= maxs[i+1]) { printf("TAK\n%d\n", i+1); return; } } printf("NIE\n"); } // Options: // [...] [min] [rest] // [...] [max] [rest] void check3() { if (tab[0] >= tab[1]) { printf("TAK\n1 2\n"); return; } for (int i = 1; i < n-1; ++i) { if (tab[i] <= mins[i-1]) { printf("TAK\n%d %d\n",i, i+1); return; } if (tab[i] >= maxs[i+1]) { printf("TAK\n%d %d\n",i, i+1); return; } } if (mins[n-2] >= tab[n-1]) { printf("TAK\n%d %d\n", n-2, n-1); } printf("NIE\n"); } int ans[500100]; // Any pair A B such that B <= A // [...] [A] [B] [...] => B <= A void check4() { bool yes = false; int split = -1; for (int i = 1; i < n; ++i) { if (tab[i] <= tab[i-1]) { yes = true; split = i; // break; } } if (!yes) { printf("NIE\n"); return; } printf("TAK\n"); int left = k - 4; if (split - 1 == 0) { left++; } if (split + 1 >= n) { left++; } //printf("split: %d\n left: %d\n", split, left); // int printed = 0; for (int i = 1; i < n; ++i) { if (i == split-1 || i == split + 1 || i == split) { printf("%d ", i); ++printed; } else { if (left > 0) { printf("%d ", i); ++printed; --left; } } } printf("\n"); if (printed != k-1) { //printf("FAIL\n"); } } int main() { scanf("%d%d", &n, &k); for (int i = 0; i < n; ++i) { scanf("%d", &tab[i]); } minmax(); if (k == 2) { check2(); } else if (k == 3) { check3(); } else if (k >= 4) { check4(); } return 0; } |