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답안 #1029948

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1029948 2024-07-21T14:24:47 Z avighna Progression (NOI20_progression) C++17
57 / 100
 1155 ms 111344 KB 
#include <bits/stdc++.h>

typedef long long ll;

class Node {
public:
  ll pref, suff, max;
  ll ele;
  ll size;

  Node(ll pref, ll suff, ll max, ll ele, ll size)
      : pref(pref), suff(suff), max(max), ele(ele), size(size) {}
  Node() : pref(0), suff(0), max(0), ele(-1), size(0) {}

  bool operator==(const Node &other) {
    return pref == other.pref and suff == other.suff and max == other.max and
           ele == other.ele and size == other.size;
  }
};

class SegmentTree {
public:
  std::vector<Node> seg;
  std::vector<bool> lazy;
  ll n;

  SegmentTree(ll n) {
    this->n = n;
    seg.resize(4 * n);
    lazy.resize(8 * n);
  }

  Node idt() { return Node(0, 0, 0, -1, 0); }

  Node f(Node a, Node b) {
    if (a == idt()) {
      return b;
    }
    if (b == idt()) {
      return a;
    }
    Node ans;
    ans.pref = a.pref;
    if (a.pref == a.size) {
      ans.pref += b.pref;
    }
    ans.suff = b.suff;
    if (b.suff == b.size) {
      ans.suff += a.suff;
    }
    ans.max = std::max(ans.max, ans.suff);
    ans.max = std::max(ans.max, ans.pref);
    ans.max = std::max(ans.max, a.suff + b.pref);
    ans.max = std::max(ans.max, a.max);
    ans.max = std::max(ans.max, b.max);
    ans.ele = a.ele;
    ans.size = a.size + b.size;
    return ans;
  }

  void construct(std::vector<ll> &a, ll v, ll tl, ll tr) {
    if (tl == tr) {
      if (a[tl] == 0) {
        seg[v] = Node(1, 1, 1, a[tl], 1);
      } else {
        seg[v] = Node(0, 0, 0, a[tl], 1);
      }
      return;
    }
    ll tm = (tl + tr) / 2;
    construct(a, 2 * v, tl, tm);
    construct(a, 2 * v + 1, tm + 1, tr);
    seg[v] = f(seg[2 * v], seg[2 * v + 1]);
  }

  void lazy_update(ll v, ll tl, ll tr) {
    if (lazy[v]) {
      lazy[v] = false;
      ll size = tr - tl + 1;
      seg[v] = Node(size, size, size, 0, size);
      lazy[2 * v] = lazy[2 * v + 1] = true;
    }
  }

  Node query(ll v, ll tl, ll tr, ll l, ll r) {
    lazy_update(v, tl, tr);
    if (tl > tr || l > r || tr < l || r < tl) {
      return idt();
    }
    if (l <= tl && tr <= r) {
      return seg[v];
    }
    ll tm = (tl + tr) / 2;
    return f(query(2 * v, tl, tm, l, r), query(2 * v + 1, tm + 1, tr, l, r));
  }
  Node query(ll l, ll r) { return query(1, 0, n, l, r); }

  void update(ll v, ll tl, ll tr, ll idx, ll del) {
    lazy_update(v, tl, tr);
    if (tl > tr || (!(tl <= idx && idx <= tr))) {
      return;
    }
    if (tl != tr) {
      ll tm = (tl + tr) / 2;
      update(2 * v, tl, tm, idx, del);
      update(2 * v + 1, tm + 1, tr, idx, del);
      seg[v] = f(seg[2 * v], seg[2 * v + 1]);
    } else {
      seg[v].ele += del;
      if (seg[v].ele == 0) {
        seg[v] = Node(1, 1, 1, seg[v].ele, 1);
      } else {
        seg[v] = Node(0, 0, 0, seg[v].ele, 1);
      }
    }
  }
  void update(ll idx, ll del) { update(1, 0, n, idx, del); }

  void zero_range(ll v, ll tl, ll tr, ll l, ll r) {
    lazy_update(v, tl, tr);
    if (tl > tr || l > r || tr < l || r < tl) {
      return;
    }
    if (l <= tl && tr <= r) {
      ll size = tr - tl + 1;
      seg[v] = Node(size, size, size, 0, size);
      lazy[2 * v] = lazy[2 * v + 1] = true;
      return;
    }
    ll tm = (tl + tr) / 2;
    zero_range(2 * v, tl, tm, l, r);
    zero_range(2 * v + 1, tm + 1, tr, l, r);
  }
  void zero_range(ll l, ll r) { zero_range(1, 0, n, l, r); }
};

class LazySegmentTree {
private:
  enum type { ADD, SET };
  std::vector<std::array<ll, 2>> lazy;

public:
  std::vector<ll> seg;
  ll n;

  ll f(ll a, ll b) { return a + b; }
  // For a bitwise AND, this would be 1, since x AND x = x (and not 2x)
  ll f_update_range(ll size) { return size; }
  ll idt() { return 0; }

  LazySegmentTree(ll n) {
    this->n = n;
    seg.resize(4 * n, idt());
    lazy.resize(8 * n);
    for (ll i = 0; i < 8 * n; ++i) {
      lazy[i][SET] = -1;
    }
  }

  void do_lazy_update(ll v, ll size) {
    if (lazy[v][SET] != -1) {
      seg[v] = lazy[v][SET] * size;
      lazy[2 * v][SET] = lazy[2 * v + 1][SET] = lazy[v][SET];
      lazy[2 * v][ADD] = lazy[2 * v + 1][ADD] = 0;
      lazy[v][SET] = -1;
    }
    if (lazy[v][ADD] != 0) {
      seg[v] += lazy[v][ADD] * size;
      lazy[2 * v][ADD] += lazy[v][ADD];
      lazy[2 * v + 1][ADD] += lazy[v][ADD];
      lazy[v][ADD] = 0;
    }
  }

  void add(ll v, ll tl, ll tr, ll l, ll r, ll delta) {
    ll size = f_update_range(tr - tl + 1);
    do_lazy_update(v, size);
    // [tl, tr] ... [l, r] or [l, r] ... [tl, tr]
    if (tr < l || r < tl || l > r || tl > tr) {
      return;
    }
    // [l, [tl, tr], r]
    if (l <= tl && tr <= r) {
      seg[v] += delta * size;
      lazy[2 * v][ADD] += delta;
      lazy[2 * v + 1][ADD] += delta;
      return;
    }
    ll tm = (tl + tr) / 2;
    add(2 * v, tl, tm, l, r, delta);
    add(2 * v + 1, tm + 1, tr, l, r, delta);
    seg[v] = f(seg[2 * v], seg[2 * v + 1]);
  }
  void add(ll l, ll r, ll delta) { add(1, 0, n, l, r, delta); }
  void add(ll idx, ll delta) { add(idx, idx, delta); }

  void set(ll v, ll tl, ll tr, ll l, ll r, ll x) {
    ll size = f_update_range(tr - tl + 1);
    do_lazy_update(v, size);
    // [tl, tr] ... [l, r] or [l, r] ... [tl, tr]
    if (tr < l || r < tl || l > r || tl > tr) {
      return;
    }
    // [l, [tl, tr], r]
    if (l <= tl && tr <= r) {
      seg[v] = x * size;
      lazy[2 * v][SET] = lazy[2 * v + 1][SET] = x;
      lazy[2 * v][ADD] = lazy[2 * v + 1][ADD] = 0;
      return;
    }
    ll tm = (tl + tr) / 2;
    set(2 * v, tl, tm, l, r, x);
    set(2 * v + 1, tm + 1, tr, l, r, x);
    seg[v] = f(seg[2 * v], seg[2 * v + 1]);
  }
  void set(ll l, ll r, ll x) { set(1, 0, n, l, r, x); }
  void set(ll idx, ll x) { set(idx, idx, x); }

  ll query(ll v, ll tl, ll tr, ll l, ll r) {
    do_lazy_update(v, f_update_range(tr - tl + 1));
    // [tl, tr] ... [l, r] or [l, r] ... [tl, tr]
    if (tr < l || r < tl || l > r || tl > tr) {
      return idt();
    }
    // [l, [tl, tr], r]
    if (l <= tl && tr <= r) {
      return seg[v];
    }
    ll tm = (tl + tr) / 2;
    return f(query(2 * v, tl, tm, l, r), query(2 * v + 1, tm + 1, tr, l, r));
  }
  ll query(ll l, ll r) { return query(1, 0, n, l, r); }
};

int main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(nullptr);

  ll n, q;
  std::cin >> n >> q;
  std::vector<ll> d(n + 1);
  for (ll i = 0; i < n; ++i) {
    std::cin >> d[i];
  }
  std::vector<ll> diff(n + 1);
  std::adjacent_difference(d.begin(), d.end(), diff.begin());
  std::vector<ll> diff_diff(n + 1);
  std::adjacent_difference(diff.begin(), diff.end(), diff_diff.begin());

  SegmentTree tree(n);
  LazySegmentTree diff_tree(n);
  tree.construct(diff_diff, 1, 0, n);
  for (ll i = 0; i < n; ++i) {
    diff_tree.add(i, diff[i]);
  }

  auto diff_update = [&](ll l, ll r, ll s, ll c) {
    diff_tree.add(l, s);
    diff_tree.add(r + 1, -s - (r - l) * c);
    if (l + 1 <= r) {
      diff_tree.add(l + 1, r, c);
    }
  };

  auto update = [&](ll l, ll r, ll s, ll c) {
    tree.update(l, s);
    tree.update(l + 1, -s);
    tree.update(r + 1, -s);
    if (r + 2 <= n) {
      tree.update(r + 2, s);
    }
    if (l != r) {
      tree.update(l + 1, c);
      tree.update(r + 1, -c - (r - l) * c);
      if (r + 2 <= n) {
        tree.update(r + 2, (r - l) * c);
      }
    }
  };

  while (q--) {
    ll t;
    std::cin >> t;
    ll l, r;
    std::cin >> l >> r;
    --l, --r;
    if (t == 1) {
      ll s, c;
      std::cin >> s >> c;
      update(l, r, s, c);
      diff_update(l, r, s, c);
    } else if (t == 2) {
      ll s, c;
      std::cin >> s >> c;
      ll pref_1 = diff_tree.query(0, l - 1);
      ll pref_2 = diff_tree.query(0, r - 1);
      diff_tree.add(l, -pref_1);
      diff_tree.set(l + 1, r, 0);
      diff_tree.add(r, pref_2);
      tree.update(l, -pref_1);
      tree.update(l + 1, pref_1);
      tree.zero_range(l + 2, r);
      tree.update(r + 1, pref_2);
      tree.update(r + 2, -pref_2);
      update(l, r, s, c);
      diff_update(l, r, s, c);
    } else {
      if (l + 2 > r) {
        std::cout << r - l + 1 << '\n';
      } else {
        std::cout << tree.query(l + 2, r).max + 2 << '\n';
      }
    }
  }
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1012 ms 110292 KB Output is correct
2 Correct 232 ms 3444 KB Output is correct
3 Correct 226 ms 3668 KB Output is correct
4 Correct 217 ms 3664 KB Output is correct
5 Correct 241 ms 3596 KB Output is correct
6 Correct 238 ms 3736 KB Output is correct
7 Correct 220 ms 3512 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 472 KB Output is correct
11 Correct 947 ms 110176 KB Output is correct
12 Correct 985 ms 110172 KB Output is correct
13 Correct 969 ms 110584 KB Output is correct
14 Correct 1031 ms 110712 KB Output is correct
15 Correct 976 ms 110424 KB Output is correct
16 Correct 958 ms 110176 KB Output is correct
17 Correct 1020 ms 110044 KB Output is correct
18 Correct 942 ms 110172 KB Output is correct

Subtask #2
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 600 KB Output is correct
2 Incorrect 2 ms 604 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 345 ms 108880 KB Output is correct
2 Correct 64 ms 3020 KB Output is correct
3 Correct 78 ms 2900 KB Output is correct
4 Correct 56 ms 2904 KB Output is correct
5 Correct 81 ms 3284 KB Output is correct
6 Correct 79 ms 3088 KB Output is correct
7 Correct 64 ms 3156 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 452 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 363 ms 107332 KB Output is correct
12 Correct 388 ms 108780 KB Output is correct
13 Correct 398 ms 107432 KB Output is correct
14 Correct 396 ms 107628 KB Output is correct
15 Correct 375 ms 108652 KB Output is correct
16 Correct 379 ms 109296 KB Output is correct
17 Correct 360 ms 109156 KB Output is correct
18 Correct 357 ms 109404 KB Output is correct
19 Correct 325 ms 108660 KB Output is correct
20 Correct 336 ms 108624 KB Output is correct
21 Correct 312 ms 108592 KB Output is correct

Subtask #4
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1119 ms 111344 KB Output is correct
2 Incorrect 232 ms 3664 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 345 ms 108880 KB Output is correct
2 Correct 64 ms 3020 KB Output is correct
3 Correct 78 ms 2900 KB Output is correct
4 Correct 56 ms 2904 KB Output is correct
5 Correct 81 ms 3284 KB Output is correct
6 Correct 79 ms 3088 KB Output is correct
7 Correct 64 ms 3156 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 452 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 363 ms 107332 KB Output is correct
12 Correct 388 ms 108780 KB Output is correct
13 Correct 398 ms 107432 KB Output is correct
14 Correct 396 ms 107628 KB Output is correct
15 Correct 375 ms 108652 KB Output is correct
16 Correct 379 ms 109296 KB Output is correct
17 Correct 360 ms 109156 KB Output is correct
18 Correct 357 ms 109404 KB Output is correct
19 Correct 325 ms 108660 KB Output is correct
20 Correct 336 ms 108624 KB Output is correct
21 Correct 312 ms 108592 KB Output is correct
22 Correct 1123 ms 111028 KB Output is correct
23 Correct 210 ms 3664 KB Output is correct
24 Correct 185 ms 3496 KB Output is correct
25 Correct 215 ms 3660 KB Output is correct
26 Correct 200 ms 3664 KB Output is correct
27 Correct 187 ms 3680 KB Output is correct
28 Correct 211 ms 3664 KB Output is correct
29 Correct 1 ms 460 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1109 ms 108196 KB Output is correct
33 Correct 1150 ms 110884 KB Output is correct
34 Correct 1155 ms 108216 KB Output is correct
35 Correct 1128 ms 108236 KB Output is correct
36 Correct 833 ms 108076 KB Output is correct
37 Correct 800 ms 107860 KB Output is correct
38 Correct 747 ms 107988 KB Output is correct
39 Correct 1085 ms 110932 KB Output is correct
40 Correct 1107 ms 111180 KB Output is correct
41 Correct 1138 ms 111052 KB Output is correct
42 Correct 1100 ms 110932 KB Output is correct
43 Correct 1148 ms 110976 KB Output is correct
44 Correct 1068 ms 110780 KB Output is correct
45 Correct 1080 ms 110912 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1012 ms 110292 KB Output is correct
2 Correct 232 ms 3444 KB Output is correct
3 Correct 226 ms 3668 KB Output is correct
4 Correct 217 ms 3664 KB Output is correct
5 Correct 241 ms 3596 KB Output is correct
6 Correct 238 ms 3736 KB Output is correct
7 Correct 220 ms 3512 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 472 KB Output is correct
11 Correct 947 ms 110176 KB Output is correct
12 Correct 985 ms 110172 KB Output is correct
13 Correct 969 ms 110584 KB Output is correct
14 Correct 1031 ms 110712 KB Output is correct
15 Correct 976 ms 110424 KB Output is correct
16 Correct 958 ms 110176 KB Output is correct
17 Correct 1020 ms 110044 KB Output is correct
18 Correct 942 ms 110172 KB Output is correct
19 Correct 3 ms 600 KB Output is correct
20 Incorrect 2 ms 604 KB Output isn't correct
21 Halted 0 ms 0 KB -