#include <bits/stdc++.h> const int MAX_N = 5e5; int n, k; bool res[MAX_N+3]; int a[MAX_N+3]; bool is_increasing() { for (int i = 1; i < n; i++) if (a[i] <= a[i-1]) return false; return true; } std::vector<int> min_pref, max_suf; bool go_2() { for (int i = 0; i < n-1; i++) if (min_pref[i] >= max_suf[i+1]) { res[i] = true; return true; } return false; } bool go_3() { for (int i = 1; i < n-1; i++) { if (min_pref[i-1] >= a[i] || a[i] >= max_suf[i+1]) { res[i-1] = res[i] = true; return true; } } return false; } void go_4() { for (int i = 1; i < n-2; i++) if (a[i] >= a[i+1]) { res[i-1] = res[i] = res[i+1] = true; return; } return; } void output() { int m = 1; for (int i = 0; i < n-1; i++) if (res[i]) m++; int left = k-m; for (int i = 0; i < n-1; i++) if (!res[i] && left > 0) { res[i] = true; left--; } std::cout << "TAK\n"; for (int i = 0; i < n-1; i++) if (res[i]) std::cout << i+1 << " "; std::cout << "\n"; } int main() { std::ios_base::sync_with_stdio(0); std::cin.tie(NULL); std::cin >> n >> k; for (int i = 0; i < n; i++) std::cin >> a[i]; if (is_increasing()) { std::cout << "NIE\n"; return 0; } min_pref.resize(n, 0); max_suf.resize(n, 0); min_pref[0] = a[0]; for (int i = 1; i < n; i++) min_pref[i] = std::min(min_pref[i-1], a[i]); max_suf[n-1] = a[n-1]; for (int i = n-2; i >= 0; i--) max_suf[i] = std::max(max_suf[i+1], a[i]); if (k >= 2 && go_2()) { output(); } else if (k >= 3 && go_3()) { output(); } else if (k >= 4) { go_4(); output(); } else { std::cout << "NIE\n"; } }
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 | #include <bits/stdc++.h> const int MAX_N = 5e5; int n, k; bool res[MAX_N+3]; int a[MAX_N+3]; bool is_increasing() { for (int i = 1; i < n; i++) if (a[i] <= a[i-1]) return false; return true; } std::vector<int> min_pref, max_suf; bool go_2() { for (int i = 0; i < n-1; i++) if (min_pref[i] >= max_suf[i+1]) { res[i] = true; return true; } return false; } bool go_3() { for (int i = 1; i < n-1; i++) { if (min_pref[i-1] >= a[i] || a[i] >= max_suf[i+1]) { res[i-1] = res[i] = true; return true; } } return false; } void go_4() { for (int i = 1; i < n-2; i++) if (a[i] >= a[i+1]) { res[i-1] = res[i] = res[i+1] = true; return; } return; } void output() { int m = 1; for (int i = 0; i < n-1; i++) if (res[i]) m++; int left = k-m; for (int i = 0; i < n-1; i++) if (!res[i] && left > 0) { res[i] = true; left--; } std::cout << "TAK\n"; for (int i = 0; i < n-1; i++) if (res[i]) std::cout << i+1 << " "; std::cout << "\n"; } int main() { std::ios_base::sync_with_stdio(0); std::cin.tie(NULL); std::cin >> n >> k; for (int i = 0; i < n; i++) std::cin >> a[i]; if (is_increasing()) { std::cout << "NIE\n"; return 0; } min_pref.resize(n, 0); max_suf.resize(n, 0); min_pref[0] = a[0]; for (int i = 1; i < n; i++) min_pref[i] = std::min(min_pref[i-1], a[i]); max_suf[n-1] = a[n-1]; for (int i = n-2; i >= 0; i--) max_suf[i] = std::max(max_suf[i+1], a[i]); if (k >= 2 && go_2()) { output(); } else if (k >= 3 && go_3()) { output(); } else if (k >= 4) { go_4(); output(); } else { std::cout << "NIE\n"; } } |