Submission #555635

#	Time	Username	Problem	Language	Result	Execution time	Memory
555635		Mamedov	Nekameleoni (COCI15_nekameleoni)	C++17	140 / 140	1270 ms	55660 KiB

nekameleoni

#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
#define pii pair<int, int>
#define piii pair<pii, int>
#define vi vector<int>
#define vvi vector<vi>
#define vpii vector<pii>
#define vvpii vector<vpii>
#define f first
#define s second
#define oo 1000000001
#define eb emplace_back
#define pb push_back
#define mpr make_pair
#define size(v) (int)v.size()
#define ln '\n'
#define ull unsigned long long
#define ll long long
#define all(v) v.begin(), v.end()

using namespace std;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

#define pli pair<ll, int>

struct node {
  vector<pli> pref, suff;
  int ans;
  node() {
    ans = oo;
  }
  node(int x, int pos) {
    pref.eb(mpr((1ll << x), pos));
    suff.eb(mpr((1ll << x), pos));
    ans = oo;
  }
};


const int up = 1e5 + 5;
node tree[up << 2];
int arr[up];
int k;

node Merge(node &L, node &R) {
  node res;
  res.ans = min(L.ans, R.ans);
  int posr = 0;
  for (int i = size(L.suff) - 1; i >= 0 && posr < size(R.pref); --i) {
    while (posr < size(R.pref) && ((L.suff[i]).f | (R.pref[posr]).f) != (1ll << k) - 1) {
      ++posr;
    }
    if (posr < size(R.pref)) {
      res.ans = min(res.ans, (R.pref[posr]).s - (L.suff[i]).s + 1);
    }
  }

  res.pref = L.pref;
  for (pli p : R.pref) {
    if ((((res.pref).back()).f | p.f) > ((res.pref).back()).f) {
      (res.pref).eb(mpr(((res.pref).back()).f | p.f, p.s));
    }
  }

  res.suff = R.suff;
  for (pli p : L.suff) {
    if ((((res.suff).back()).f | p.f) > ((res.suff).back()).f) {
      (res.suff).eb(mpr(((res.suff).back()).f | p.f, p.s));
    }
  }
  return res;
}

void build(int v, int l, int r) {
  if (l == r) {
    tree[v] = node(arr[l], l);
    if (k == 1) tree[v].ans = 1;
  } else {
    int mid = (l + r) >> 1;
    build(v * 2, l, mid);
    build(v * 2 + 1, mid + 1, r);
    tree[v] = Merge(tree[v * 2], tree[v * 2 + 1]);
  }
}

void update(int v, int l, int r, int pos) {
  if (l == r) {
    tree[v] = node(arr[l], l);
    if (k == 1) tree[v].ans = 1;
  } else {
    int mid = (l + r) >> 1;
    if (pos <= mid) update(v * 2, l, mid, pos);
    else update(v * 2 + 1, mid + 1, r, pos);
    tree[v] = Merge(tree[v * 2], tree[v * 2 + 1]);
  }
}
void solve() {
  int n, m;
  cin >> n >> k >> m;
  for (int i = 1; i <= n; ++i) {
    cin >> arr[i];
    --arr[i];
  }
  build(1, 1, n);
  int type, p, v;
  while (m--) {
    cin >> type;
    if (type == 1) {
      cin >> p >> v;
      --v;
      arr[p] = v;
      update(1, 1, n, p);
    } else {
      int ans = tree[1].ans;
      if (ans == oo) ans = -1;
      cout << ans << ln;
    }
  }
}
int main() {
  ios_base::sync_with_stdio(false);

  int t = 1;
  //cin >> t;
  while (t--) {
    solve();
  }
  return 0;
}

• 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