#include <iostream> #include <cstdio> #include <string> #include <sstream> #include <vector> #include <set> #include <map> #include <queue> #include <stack> #include <cmath> #include <algorithm> #include <cstring> #include <ctime> #include <cassert> #include <deque> using namespace std; #define assert_range(x,a,b) assert((a) <= (x) and (x) <= (b)) using ll = long long; const int INF = 1e9+10; const int MAX_N = 5*1e5+10; int a[MAX_N]; int n, k; void ans_yes(deque<int> v) { for (int i = 1; i < v.size(); ++i) { assert(v[i-1] < v[i]); } int left_v = v.front(); int right_v = v.back(); for (int x = left_v-1; v.size() < k-1 && x >= 0; --x) { v.push_front(x); } for (int x = right_v+1; v.size() < k-1 && x < n-1; ++x) { v.push_back(x); } printf("TAK\n"); assert(v.size() == k-1); for (int i = 0; i < k-1; ++i) { printf("%d ", v[i]+1); assert(0 <= v[i] && v[i] < n-1); if (i > 0) assert(v[i-1] < v[i]); } printf("\n"); } void ans_no() { printf("NIE\n"); } void solve2() { vector<pair<int, int>> R(n); for (int i = 0; i < n; ++i) { R[i] = {a[i], i}; } sort(R.begin(), R.end()); int min_l = INF; int j = n-1; for (int i = 0; i < n-1; ++i) { while (R[j].second <= i) { --j; } min_l = min(min_l, a[i]); if (min_l >= R[j].first) { ans_yes({i}); return; } } ans_no(); } void solve3() { int min_v = *min_element(a, a+n); int max_v = *max_element(a, a+n); vector<int> pos_min, pos_max; for (int i = 0; i < n; ++i) { if (a[i] == min_v) { pos_min.push_back(i); } if (a[i] == max_v) { pos_max.push_back(i); } } if (pos_min.size() > 1 || pos_min[0] > 0) { int i = pos_min[0] > 0 ? pos_min[0] : pos_min[1]; if (i == n-1) { ans_yes({i-1}); } else { ans_yes({i-1, i}); } } else if (pos_max.size() > 1 || pos_max[0] < n-1) { int i = pos_max[0] < n-1 ? pos_max[0] : pos_max[1]; if (i == 0) { ans_yes({i}); } else { ans_yes({i-1, i}); } } else { ans_no(); } } void solve4plus() { for (int i = 0; i < n-1; ++i) { if (a[i] >= a[i+1]) { if (i == 0) { ans_yes({i, i+1}); } else if (i == n-2) { ans_yes({i-1, i}); } else { ans_yes({i-1, i, i+1}); } return; } } ans_no(); } int main() { //int n, k; scanf("%d %d", &n, &k); for (int i = 0; i < n; ++i) { scanf("%d", &a[i]); } if (k == 2) { solve2(); } else if (k == 3) { solve3(); } else { solve4plus(); } 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 | #include <iostream> #include <cstdio> #include <string> #include <sstream> #include <vector> #include <set> #include <map> #include <queue> #include <stack> #include <cmath> #include <algorithm> #include <cstring> #include <ctime> #include <cassert> #include <deque> using namespace std; #define assert_range(x,a,b) assert((a) <= (x) and (x) <= (b)) using ll = long long; const int INF = 1e9+10; const int MAX_N = 5*1e5+10; int a[MAX_N]; int n, k; void ans_yes(deque<int> v) { for (int i = 1; i < v.size(); ++i) { assert(v[i-1] < v[i]); } int left_v = v.front(); int right_v = v.back(); for (int x = left_v-1; v.size() < k-1 && x >= 0; --x) { v.push_front(x); } for (int x = right_v+1; v.size() < k-1 && x < n-1; ++x) { v.push_back(x); } printf("TAK\n"); assert(v.size() == k-1); for (int i = 0; i < k-1; ++i) { printf("%d ", v[i]+1); assert(0 <= v[i] && v[i] < n-1); if (i > 0) assert(v[i-1] < v[i]); } printf("\n"); } void ans_no() { printf("NIE\n"); } void solve2() { vector<pair<int, int>> R(n); for (int i = 0; i < n; ++i) { R[i] = {a[i], i}; } sort(R.begin(), R.end()); int min_l = INF; int j = n-1; for (int i = 0; i < n-1; ++i) { while (R[j].second <= i) { --j; } min_l = min(min_l, a[i]); if (min_l >= R[j].first) { ans_yes({i}); return; } } ans_no(); } void solve3() { int min_v = *min_element(a, a+n); int max_v = *max_element(a, a+n); vector<int> pos_min, pos_max; for (int i = 0; i < n; ++i) { if (a[i] == min_v) { pos_min.push_back(i); } if (a[i] == max_v) { pos_max.push_back(i); } } if (pos_min.size() > 1 || pos_min[0] > 0) { int i = pos_min[0] > 0 ? pos_min[0] : pos_min[1]; if (i == n-1) { ans_yes({i-1}); } else { ans_yes({i-1, i}); } } else if (pos_max.size() > 1 || pos_max[0] < n-1) { int i = pos_max[0] < n-1 ? pos_max[0] : pos_max[1]; if (i == 0) { ans_yes({i}); } else { ans_yes({i-1, i}); } } else { ans_no(); } } void solve4plus() { for (int i = 0; i < n-1; ++i) { if (a[i] >= a[i+1]) { if (i == 0) { ans_yes({i, i+1}); } else if (i == n-2) { ans_yes({i-1, i}); } else { ans_yes({i-1, i, i+1}); } return; } } ans_no(); } int main() { //int n, k; scanf("%d %d", &n, &k); for (int i = 0; i < n; ++i) { scanf("%d", &a[i]); } if (k == 2) { solve2(); } else if (k == 3) { solve3(); } else { solve4plus(); } return 0; } |