Submission #558578

#	Time	Username	Problem	Language	Result	Execution time	Memory
558578		pokmui9909	Nekameleoni (COCI15_nekameleoni)	C++17	140 / 140	2075 ms	56588 KiB

nekameleoni

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
ll N, K, Q;
const ll INF = 1e18;
struct Node{
    ll ans;
    vector<pair<ll, ll>> L, R;
    Node(){}
    Node(ll _ans, ll _k, ll _p){ans = _ans; L.push_back({1LL << _k, _p}); R.push_back({1LL << _k, _p});}
};
Node f(Node &p, Node &q){
    Node ret; ret.ans = min(p.ans, q.ans);
    for(ll i = p.R.size() - 1, j = 0; i >= 0 && j < q.L.size(); i--){
        while(j < q.L.size() && (p.R[i].first | q.L[j].first) != (1LL << K) - 1) j++;
        if(j < q.L.size()) ret.ans = min(ret.ans, q.L[j].second - p.R[i].second + 1);
    }
    ret.L = p.L, ret.R = q.R;
    for(ll i = 0; i < q.L.size(); i++){
        if((ret.L.back().first | q.L[i].first) > ret.L.back().first){
            ret.L.push_back({ret.L.back().first | q.L[i].first, q.L[i].second});
        }
    }
    for(ll i = 0; i < p.R.size(); i++){
        if((ret.R.back().first | p.R[i].first) > ret.R.back().first){
            ret.R.push_back({ret.R.back().first | p.R[i].first, p.R[i].second});
        }
    }
    return ret;
}
Node T[400005];
void init(ll n, ll s, ll e){
    if(s == e){
        T[n] = Node(K == 1 ? 1 : INF, 0, s);
        return;
    }
    ll m = (s + e) / 2;
    init(n * 2, s, m); init(n * 2 + 1, m + 1, e);
    T[n] = f(T[n * 2], T[n * 2 + 1]);
}
void update(ll n, ll s, ll e, ll k, ll v){
    if(s == e){
        T[n] = Node(K == 1 ? 1 : INF, v, s);
        return;
    }
    ll m = (s + e) / 2;
    if(k <= m) update(n * 2, s, m, k, v);
    else update(n * 2 + 1, m + 1, e, k, v);
    T[n] = f(T[n * 2], T[n * 2 + 1]);
}
 
int main(){
    cin.tie(0) -> sync_with_stdio(false);
    
    cin >> N >> K >> Q;
    init(1, 1, N);
    for(ll i = 1; i <= N; i++){
        ll v; cin >> v; v--;
        update(1, 1, N, i, v);
    }
    while(Q--){
        ll op; cin >> op;
        if(op == 1){
            ll k, v; cin >> k >> v; v--;
            update(1, 1, N, k, v);
        } else {
            cout << (T[1].ans > N ? -1 : T[1].ans) << '\n';
        }
    }
}

Compilation message (stderr)

nekameleoni.cpp: In function 'Node f(Node&, Node&)':
nekameleoni.cpp:15:51: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(ll i = p.R.size() - 1, j = 0; i >= 0 && j < q.L.size(); i--){
      |                                                 ~~^~~~~~~~~~~~
nekameleoni.cpp:16:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |         while(j < q.L.size() && (p.R[i].first | q.L[j].first) != (1LL << K) - 1) j++;
      |               ~~^~~~~~~~~~~~
nekameleoni.cpp:17:14: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         if(j < q.L.size()) ret.ans = min(ret.ans, q.L[j].second - p.R[i].second + 1);
      |            ~~^~~~~~~~~~~~
nekameleoni.cpp:20:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(ll i = 0; i < q.L.size(); i++){
      |                   ~~^~~~~~~~~~~~
nekameleoni.cpp:25:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(ll i = 0; i < p.R.size(); i++){
      |                   ~~^~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14