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답안 #1030013

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1030013 2024-07-21T16:06:32 Z avighna Progression (NOI20_progression) C++17
74 / 100
 3000 ms 103012 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);
      }
    }
  };

  auto set_to_zero = [&](ll l) {
    ll pref_1 = diff_tree.query(0, l);
    diff_tree.add(l, -pref_1);
    diff_tree.add(l + 1, pref_1);
    tree.update(l, -pref_1);
    tree.update(l + 1, 2 * pref_1);
    tree.update(l + 2, -pref_1);
  };

  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;
      // if (r - l <= 2) {

      // } else {
      //   ll pref_1 = diff_tree.query(0, l);
      //   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 + 1, pref_2);
      //   tree.update(l + 1, -diff_tree.query(l + 1, l + 1));
      //   tree.zero_range(l + 2, r);
      //   tree.update(r + 1, diff_tree.query(r + 1, r + 1));
      // }
      for (ll i = l; i <= r; ++i) {
        set_to_zero(i);
      }
      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
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3057 ms 101972 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 95 ms 604 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 472 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 79 ms 724 KB Output is correct
9 Correct 86 ms 600 KB Output is correct
10 Correct 83 ms 600 KB Output is correct
11 Correct 25 ms 604 KB Output is correct
12 Correct 89 ms 604 KB Output is correct
13 Correct 27 ms 600 KB Output is correct
14 Correct 36 ms 604 KB Output is correct
15 Correct 71 ms 600 KB Output is correct
16 Correct 86 ms 808 KB Output is correct
17 Correct 79 ms 604 KB Output is correct
18 Correct 70 ms 600 KB Output is correct
19 Correct 2 ms 468 KB Output is correct
20 Correct 2 ms 348 KB Output is correct
21 Correct 2 ms 348 KB Output is correct

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 381 ms 103004 KB Output is correct
2 Correct 81 ms 848 KB Output is correct
3 Correct 68 ms 848 KB Output is correct
4 Correct 45 ms 832 KB Output is correct
5 Correct 65 ms 936 KB Output is correct
6 Correct 53 ms 996 KB Output is correct
7 Correct 81 ms 1012 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 345 ms 102388 KB Output is correct
12 Correct 311 ms 102644 KB Output is correct
13 Correct 410 ms 102396 KB Output is correct
14 Correct 368 ms 102480 KB Output is correct
15 Correct 399 ms 102556 KB Output is correct
16 Correct 354 ms 103012 KB Output is correct
17 Correct 412 ms 102944 KB Output is correct
18 Correct 402 ms 102992 KB Output is correct
19 Correct 380 ms 102392 KB Output is correct
20 Correct 354 ms 102284 KB Output is correct
21 Correct 366 ms 102420 KB Output is correct

Subtask #4
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1132 ms 101784 KB Output is correct
2 Correct 235 ms 592 KB Output is correct
3 Correct 205 ms 592 KB Output is correct
4 Correct 200 ms 596 KB Output is correct
5 Correct 235 ms 476 KB Output is correct
6 Correct 214 ms 592 KB Output is correct
7 Correct 186 ms 484 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1057 ms 101812 KB Output is correct
12 Correct 1039 ms 101776 KB Output is correct
13 Correct 1178 ms 101980 KB Output is correct
14 Correct 1102 ms 102132 KB Output is correct
15 Correct 1040 ms 101976 KB Output is correct
16 Correct 1048 ms 102020 KB Output is correct
17 Correct 1152 ms 102028 KB Output is correct
18 Correct 1112 ms 101884 KB Output is correct
19 Correct 1184 ms 101968 KB Output is correct
20 Correct 1044 ms 101972 KB Output is correct
21 Correct 1077 ms 101708 KB Output is correct

Subtask #5
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 381 ms 103004 KB Output is correct
2 Correct 81 ms 848 KB Output is correct
3 Correct 68 ms 848 KB Output is correct
4 Correct 45 ms 832 KB Output is correct
5 Correct 65 ms 936 KB Output is correct
6 Correct 53 ms 996 KB Output is correct
7 Correct 81 ms 1012 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 345 ms 102388 KB Output is correct
12 Correct 311 ms 102644 KB Output is correct
13 Correct 410 ms 102396 KB Output is correct
14 Correct 368 ms 102480 KB Output is correct
15 Correct 399 ms 102556 KB Output is correct
16 Correct 354 ms 103012 KB Output is correct
17 Correct 412 ms 102944 KB Output is correct
18 Correct 402 ms 102992 KB Output is correct
19 Correct 380 ms 102392 KB Output is correct
20 Correct 354 ms 102284 KB Output is correct
21 Correct 366 ms 102420 KB Output is correct
22 Correct 1124 ms 101980 KB Output is correct
23 Correct 233 ms 512 KB Output is correct
24 Correct 199 ms 596 KB Output is correct
25 Correct 191 ms 596 KB Output is correct
26 Correct 205 ms 500 KB Output is correct
27 Correct 203 ms 736 KB Output is correct
28 Correct 212 ms 592 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1200 ms 102020 KB Output is correct
33 Correct 1071 ms 102028 KB Output is correct
34 Correct 1061 ms 101984 KB Output is correct
35 Correct 1098 ms 101948 KB Output is correct
36 Correct 836 ms 102372 KB Output is correct
37 Correct 762 ms 102280 KB Output is correct
38 Correct 775 ms 102136 KB Output is correct
39 Correct 1072 ms 102128 KB Output is correct
40 Correct 1067 ms 102148 KB Output is correct
41 Correct 1142 ms 102136 KB Output is correct
42 Correct 1152 ms 102060 KB Output is correct
43 Correct 1083 ms 101972 KB Output is correct
44 Correct 1097 ms 102024 KB Output is correct
45 Correct 1165 ms 101980 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3057 ms 101972 KB Time limit exceeded
2 Halted 0 ms 0 KB -