#include<bits/stdc++.h> using namespace std; using LL=long long; #define FOR(i,l,r) for(int i=(l);i<=(r);++i) #define REP(i,n) FOR(i,0,(n)-1) #define ssize(x) int(x.size()) template<class A,class B>auto&operator<<(ostream&o,pair<A,B>p){return o<<'('<<p.first<<", "<<p.second<<')';} template<class T>auto operator<<(ostream&o,T x)->decltype(x.end(),o){o<<'{';int i=0;for(auto e:x)o<<(", ")+2*!i++<<e;return o<<'}';} #ifdef DEBUG #define debug(x...) cerr<<"["#x"]: ",[](auto...$){((cerr<<$<<"; "),...);}(x),cerr<<'\n' #else #define debug(...) {} #endif int main() { cin.tie(0)->sync_with_stdio(0); int n, k; cin >> n >> k; vector<int> a(n); REP(i, n) cin >> a[i]; debug(n, k, a); const auto nin = n; const auto kin = k; const auto ain = a; const auto is_ok = [&nin, &kin, &ain](vector<int> v) { debug(v); assert(ssize(v) == kin - 1); assert(v[0] >= 0); assert(v.back() < nin - 1); REP(i, ssize(v) - 1) assert(v[i] < v[i + 1]); int last = 0; const int INF = (*max_element(ain.begin(), ain.end())) + 1; v.insert(v.begin(), -1); v.emplace_back(nin - 1); REP(i, ssize(v) - 1) { int cur = INF; FOR(j, v[i] + 1, v[i + 1]) { if (ain[j] > last) { cur = min(cur, ain[j]); } } if (cur == INF) { return true; } last = cur; } return false; }; const auto answer_no = [&] { cout << "NIE\n"; exit(0); }; const auto answer_yes = [&](const vector<int>& v) { cout << "TAK\n"; #ifdef LOCAL assert(is_ok(v)); #else for (auto e : v) cout << e + 1 << ' '; cout << '\n'; #endif exit(0); }; if (k == 2) { vector<int> pref_min(n); pref_min[0] = a[0]; FOR(i, 1, n - 1) pref_min[i] = min(pref_min[i - 1], a[i]); vector<int> suff_max(n); suff_max[n - 1] = a[n - 1]; for (int i = n - 2; i >= 0; --i) suff_max[i] = max(suff_max[i + 1], a[i]); REP(i, n - 1) { if (pref_min[i] >= suff_max[i + 1]) { answer_yes({i}); } } answer_no(); } else if (k == 3) { const int min_elem = *min_element(a.begin(), a.end()); const int max_elem = *max_element(a.begin(), a.end()); FOR(i, 0, n - 2) { if (a[i] == max_elem) { vector<int> ans = {i}; if (i == 0) ans.emplace_back(i + 1); else ans.emplace_back(i - 1); sort(ans.begin(), ans.end()); answer_yes(ans); } } FOR(i, 1, n - 1) { if (a[i] == min_elem) { answer_yes({i - 1, i}); } } answer_no(); } else { assert(k >= 4); REP(i, n - 1) { if (a[i] >= a[i + 1]) { vector<int> ans; vector used(n - 1, false); auto take = [&](int x) { if (x < 0 or x >= n - 1) return; if (not used[x]) { used[x] = true; ans.emplace_back(x); } }; take(i); take(i + 1); if (i > 0) take(i - 1); int x = 0; while (ssize(ans) < k - 1) { take(x); ++x; } sort(ans.begin(), ans.end()); answer_yes(ans); } } answer_no(); } assert(false); }
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 | #include<bits/stdc++.h> using namespace std; using LL=long long; #define FOR(i,l,r) for(int i=(l);i<=(r);++i) #define REP(i,n) FOR(i,0,(n)-1) #define ssize(x) int(x.size()) template<class A,class B>auto&operator<<(ostream&o,pair<A,B>p){return o<<'('<<p.first<<", "<<p.second<<')';} template<class T>auto operator<<(ostream&o,T x)->decltype(x.end(),o){o<<'{';int i=0;for(auto e:x)o<<(", ")+2*!i++<<e;return o<<'}';} #ifdef DEBUG #define debug(x...) cerr<<"["#x"]: ",[](auto...$){((cerr<<$<<"; "),...);}(x),cerr<<'\n' #else #define debug(...) {} #endif int main() { cin.tie(0)->sync_with_stdio(0); int n, k; cin >> n >> k; vector<int> a(n); REP(i, n) cin >> a[i]; debug(n, k, a); const auto nin = n; const auto kin = k; const auto ain = a; const auto is_ok = [&nin, &kin, &ain](vector<int> v) { debug(v); assert(ssize(v) == kin - 1); assert(v[0] >= 0); assert(v.back() < nin - 1); REP(i, ssize(v) - 1) assert(v[i] < v[i + 1]); int last = 0; const int INF = (*max_element(ain.begin(), ain.end())) + 1; v.insert(v.begin(), -1); v.emplace_back(nin - 1); REP(i, ssize(v) - 1) { int cur = INF; FOR(j, v[i] + 1, v[i + 1]) { if (ain[j] > last) { cur = min(cur, ain[j]); } } if (cur == INF) { return true; } last = cur; } return false; }; const auto answer_no = [&] { cout << "NIE\n"; exit(0); }; const auto answer_yes = [&](const vector<int>& v) { cout << "TAK\n"; #ifdef LOCAL assert(is_ok(v)); #else for (auto e : v) cout << e + 1 << ' '; cout << '\n'; #endif exit(0); }; if (k == 2) { vector<int> pref_min(n); pref_min[0] = a[0]; FOR(i, 1, n - 1) pref_min[i] = min(pref_min[i - 1], a[i]); vector<int> suff_max(n); suff_max[n - 1] = a[n - 1]; for (int i = n - 2; i >= 0; --i) suff_max[i] = max(suff_max[i + 1], a[i]); REP(i, n - 1) { if (pref_min[i] >= suff_max[i + 1]) { answer_yes({i}); } } answer_no(); } else if (k == 3) { const int min_elem = *min_element(a.begin(), a.end()); const int max_elem = *max_element(a.begin(), a.end()); FOR(i, 0, n - 2) { if (a[i] == max_elem) { vector<int> ans = {i}; if (i == 0) ans.emplace_back(i + 1); else ans.emplace_back(i - 1); sort(ans.begin(), ans.end()); answer_yes(ans); } } FOR(i, 1, n - 1) { if (a[i] == min_elem) { answer_yes({i - 1, i}); } } answer_no(); } else { assert(k >= 4); REP(i, n - 1) { if (a[i] >= a[i + 1]) { vector<int> ans; vector used(n - 1, false); auto take = [&](int x) { if (x < 0 or x >= n - 1) return; if (not used[x]) { used[x] = true; ans.emplace_back(x); } }; take(i); take(i + 1); if (i > 0) take(i - 1); int x = 0; while (ssize(ans) < k - 1) { take(x); ++x; } sort(ans.begin(), ans.end()); answer_yes(ans); } } answer_no(); } assert(false); } |