#include <bits/stdc++.h> using namespace std; using LL = long long; #define e1 first #define e2 second #define pb push_back #define OUT(x) {cout << x << "\n"; exit(0); } #define TCOUT(x) {cout << x << "\n"; return; } #define FOR(i, l, r) for(int i = (l); i <= (r); ++i) #define rep(i, l, r) for(int i = (l); i < (r); ++i) #define boost {ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); } #define sz(x) int(x.size()) #define trav(a, x) for(auto& a : x) #define all(x) begin(x), end(x) typedef long long ll; typedef pair <int, int> pii; typedef pair <ll, ll> pll; typedef vector<int> vi; typedef vector<ll> vll; vi solve(vi input, int k) { int n = sz(input); vi pmin(n), smin(n), pmax(n), smax(n); rep(i, 0, n) { pmin[i] = input[i]; pmax[i] = input[i]; if (i > 0) { pmin[i] = min(pmin[i], pmin[i-1]); pmax[i] = max(pmax[i], pmax[i-1]); } } for (int i=n-1; i>=0; --i) { smin[i] = input[i]; smax[i] = input[i]; if (i != n-1) { smin[i] = min(smin[i], smin[i+1]); smax[i] = max(smax[i], smax[i+1]); } } int inv = -1; rep(i, 1, n) { if (input[i - 1] >= input[i]) inv = i; } if (inv == -1) return {}; if (k > 3) { vi output = {}; auto in_range = [&](int point) -> bool { return point >= 0 && point < n - 1; }; if (in_range(inv - 2)) output.pb(inv - 2); if (in_range(inv - 1)) output.pb(inv - 1); if (in_range(inv)) output.pb(inv); if (in_range(inv + 1)) output.pb(inv + 1); rep(i, 0, inv - 2) { if (sz(output) < k - 1) output.pb(i); } rep(i, inv + 2, n -1) { if (sz(output) < k - 1) output.pb(i); } sort(all(output)); return output; } else if (k == 3) { rep(i, 1, n-1) { if (pmin[i-1] >= input[i] || input[i] >= smax[i + 1]) return {i - 1, i}; } return {}; } else { assert(k == 2); rep(i, 1, n) { if (pmin[i-1] >= smax[i]) return {i - 1}; } return {}; } } #ifdef DEBUG template<class T> int size(T &&x) { return int(x.size()); } template<class A, class B> ostream& operator<<(ostream &out, const pair<A, B> &p) { return out << '(' << p.first << ", " << p.second << ')'; } template<class T> auto operator<<(ostream &out, T &&x) -> decltype(x.begin(), out) { out << '{'; for(auto it = x.begin(); it != x.end(); ++it) out << *it << (it == prev(x.end()) ? "" : ", "); return out << '}'; } void dump() {} template<class T, class... Args> void dump(T &&x, Args... args) { cerr << x << "; "; dump(args...); } #endif #ifdef DEBUG struct Nl{~Nl(){cerr << '\n';}}; # define debug(x...) cerr << (strcmp(#x, "") ? #x ": " : ""), dump(x), Nl(), cerr << "" #else # define debug(...) 0 && cerr #endif bool verify(vi input, vi output, int k) { if (sz(output) + 1 != k) return false; output.push_back(sz(input) - 1); for (int i=1; i<sz(output); ++i) { if (output[i - 1] >= output[i]) return false; // output sequence must be strictly increasing } int next = 0; vi perf = {INT_MIN}; for (auto ending : output) { int cand = INT_MAX; for (int i = next; i <= ending; ++i) { int value = input[i]; if (value > perf.back()) cand = min(cand, value); } if (cand == INT_MAX) return true; // successful - impossible to form an increasing sequence perf.push_back(cand); next = ending + 1; } return false; } int main() { boost; int n, k; cin >> n >> k; vector <int> vec(n); rep(i, 0, n) cin >> vec[i]; auto ans = solve(vec, k); if (ans.empty()) cout << "NIE\n"; else { cout << "TAK\n"; //assert(verify(vec, ans, k)); trav(entry, ans) cout << entry + 1 << ' '; cout << "\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 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 | #include <bits/stdc++.h> using namespace std; using LL = long long; #define e1 first #define e2 second #define pb push_back #define OUT(x) {cout << x << "\n"; exit(0); } #define TCOUT(x) {cout << x << "\n"; return; } #define FOR(i, l, r) for(int i = (l); i <= (r); ++i) #define rep(i, l, r) for(int i = (l); i < (r); ++i) #define boost {ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); } #define sz(x) int(x.size()) #define trav(a, x) for(auto& a : x) #define all(x) begin(x), end(x) typedef long long ll; typedef pair <int, int> pii; typedef pair <ll, ll> pll; typedef vector<int> vi; typedef vector<ll> vll; vi solve(vi input, int k) { int n = sz(input); vi pmin(n), smin(n), pmax(n), smax(n); rep(i, 0, n) { pmin[i] = input[i]; pmax[i] = input[i]; if (i > 0) { pmin[i] = min(pmin[i], pmin[i-1]); pmax[i] = max(pmax[i], pmax[i-1]); } } for (int i=n-1; i>=0; --i) { smin[i] = input[i]; smax[i] = input[i]; if (i != n-1) { smin[i] = min(smin[i], smin[i+1]); smax[i] = max(smax[i], smax[i+1]); } } int inv = -1; rep(i, 1, n) { if (input[i - 1] >= input[i]) inv = i; } if (inv == -1) return {}; if (k > 3) { vi output = {}; auto in_range = [&](int point) -> bool { return point >= 0 && point < n - 1; }; if (in_range(inv - 2)) output.pb(inv - 2); if (in_range(inv - 1)) output.pb(inv - 1); if (in_range(inv)) output.pb(inv); if (in_range(inv + 1)) output.pb(inv + 1); rep(i, 0, inv - 2) { if (sz(output) < k - 1) output.pb(i); } rep(i, inv + 2, n -1) { if (sz(output) < k - 1) output.pb(i); } sort(all(output)); return output; } else if (k == 3) { rep(i, 1, n-1) { if (pmin[i-1] >= input[i] || input[i] >= smax[i + 1]) return {i - 1, i}; } return {}; } else { assert(k == 2); rep(i, 1, n) { if (pmin[i-1] >= smax[i]) return {i - 1}; } return {}; } } #ifdef DEBUG template<class T> int size(T &&x) { return int(x.size()); } template<class A, class B> ostream& operator<<(ostream &out, const pair<A, B> &p) { return out << '(' << p.first << ", " << p.second << ')'; } template<class T> auto operator<<(ostream &out, T &&x) -> decltype(x.begin(), out) { out << '{'; for(auto it = x.begin(); it != x.end(); ++it) out << *it << (it == prev(x.end()) ? "" : ", "); return out << '}'; } void dump() {} template<class T, class... Args> void dump(T &&x, Args... args) { cerr << x << "; "; dump(args...); } #endif #ifdef DEBUG struct Nl{~Nl(){cerr << '\n';}}; # define debug(x...) cerr << (strcmp(#x, "") ? #x ": " : ""), dump(x), Nl(), cerr << "" #else # define debug(...) 0 && cerr #endif bool verify(vi input, vi output, int k) { if (sz(output) + 1 != k) return false; output.push_back(sz(input) - 1); for (int i=1; i<sz(output); ++i) { if (output[i - 1] >= output[i]) return false; // output sequence must be strictly increasing } int next = 0; vi perf = {INT_MIN}; for (auto ending : output) { int cand = INT_MAX; for (int i = next; i <= ending; ++i) { int value = input[i]; if (value > perf.back()) cand = min(cand, value); } if (cand == INT_MAX) return true; // successful - impossible to form an increasing sequence perf.push_back(cand); next = ending + 1; } return false; } int main() { boost; int n, k; cin >> n >> k; vector <int> vec(n); rep(i, 0, n) cin >> vec[i]; auto ans = solve(vec, k); if (ans.empty()) cout << "NIE\n"; else { cout << "TAK\n"; //assert(verify(vec, ans, k)); trav(entry, ans) cout << entry + 1 << ' '; cout << "\n"; } } |