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답안 #1030028

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1030028 2024-07-21T16:35:12 Z avighna Progression (NOI20_progression) C++17
68 / 100
 1159 ms 111212 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) {
        for (ll i = l; i <= r; ++i) {
          set_to_zero(i);
        }
      } else {
        ll pref_1 = diff_tree.query(0, l);
        ll pref_2 = diff_tree.query(0, r);
        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, r));
      }
      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 961 ms 106496 KB Output is correct
2 Correct 211 ms 2644 KB Output is correct
3 Correct 237 ms 2320 KB Output is correct
4 Correct 212 ms 2412 KB Output is correct
5 Correct 213 ms 2456 KB Output is correct
6 Correct 222 ms 2448 KB Output is correct
7 Correct 193 ms 2456 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1020 ms 106684 KB Output is correct
12 Correct 1048 ms 106576 KB Output is correct
13 Correct 996 ms 106960 KB Output is correct
14 Correct 975 ms 106716 KB Output is correct
15 Correct 976 ms 106708 KB Output is correct
16 Correct 1000 ms 106580 KB Output is correct
17 Correct 949 ms 106516 KB Output is correct
18 Correct 972 ms 108520 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 344 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 384 ms 108536 KB Output is correct
2 Correct 62 ms 2900 KB Output is correct
3 Correct 56 ms 2896 KB Output is correct
4 Correct 54 ms 2956 KB Output is correct
5 Correct 72 ms 3152 KB Output is correct
6 Correct 64 ms 3128 KB Output is correct
7 Correct 73 ms 3112 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 414 ms 107352 KB Output is correct
12 Correct 370 ms 108692 KB Output is correct
13 Correct 390 ms 107344 KB Output is correct
14 Correct 374 ms 107356 KB Output is correct
15 Correct 328 ms 108756 KB Output is correct
16 Correct 399 ms 109312 KB Output is correct
17 Correct 408 ms 109136 KB Output is correct
18 Correct 359 ms 109388 KB Output is correct
19 Correct 338 ms 108636 KB Output is correct
20 Correct 357 ms 108516 KB Output is correct
21 Correct 326 ms 108700 KB Output is correct

Subtask #4
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1066 ms 111192 KB Output is correct
2 Correct 215 ms 3664 KB Output is correct
3 Correct 215 ms 3668 KB Output is correct
4 Correct 194 ms 3648 KB Output is correct
5 Correct 225 ms 3596 KB Output is correct
6 Correct 230 ms 3748 KB Output is correct
7 Correct 233 ms 3804 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1091 ms 108132 KB Output is correct
12 Correct 1022 ms 111080 KB Output is correct
13 Correct 1059 ms 108140 KB Output is correct
14 Correct 1108 ms 108260 KB Output is correct
15 Correct 1031 ms 110932 KB Output is correct
16 Correct 1103 ms 111164 KB Output is correct
17 Correct 1068 ms 111212 KB Output is correct
18 Correct 1050 ms 111184 KB Output is correct
19 Correct 1066 ms 111000 KB Output is correct
20 Correct 1041 ms 111000 KB Output is correct
21 Correct 1103 ms 110932 KB Output is correct

Subtask #5
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 384 ms 108536 KB Output is correct
2 Correct 62 ms 2900 KB Output is correct
3 Correct 56 ms 2896 KB Output is correct
4 Correct 54 ms 2956 KB Output is correct
5 Correct 72 ms 3152 KB Output is correct
6 Correct 64 ms 3128 KB Output is correct
7 Correct 73 ms 3112 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 414 ms 107352 KB Output is correct
12 Correct 370 ms 108692 KB Output is correct
13 Correct 390 ms 107344 KB Output is correct
14 Correct 374 ms 107356 KB Output is correct
15 Correct 328 ms 108756 KB Output is correct
16 Correct 399 ms 109312 KB Output is correct
17 Correct 408 ms 109136 KB Output is correct
18 Correct 359 ms 109388 KB Output is correct
19 Correct 338 ms 108636 KB Output is correct
20 Correct 357 ms 108516 KB Output is correct
21 Correct 326 ms 108700 KB Output is correct
22 Correct 1055 ms 110344 KB Output is correct
23 Correct 197 ms 3668 KB Output is correct
24 Correct 176 ms 3664 KB Output is correct
25 Correct 208 ms 3680 KB Output is correct
26 Correct 192 ms 3668 KB Output is correct
27 Correct 162 ms 3608 KB Output is correct
28 Correct 188 ms 3484 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 1022 ms 108192 KB Output is correct
33 Correct 1046 ms 110408 KB Output is correct
34 Correct 1077 ms 108204 KB Output is correct
35 Correct 1144 ms 108144 KB Output is correct
36 Correct 792 ms 107952 KB Output is correct
37 Correct 808 ms 108008 KB Output is correct
38 Correct 791 ms 107860 KB Output is correct
39 Correct 1106 ms 110388 KB Output is correct
40 Correct 1086 ms 110664 KB Output is correct
41 Correct 1159 ms 110668 KB Output is correct
42 Correct 1045 ms 110600 KB Output is correct
43 Correct 1022 ms 110448 KB Output is correct
44 Correct 1088 ms 110420 KB Output is correct
45 Correct 1087 ms 110408 KB Output is correct

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 961 ms 106496 KB Output is correct
2 Correct 211 ms 2644 KB Output is correct
3 Correct 237 ms 2320 KB Output is correct
4 Correct 212 ms 2412 KB Output is correct
5 Correct 213 ms 2456 KB Output is correct
6 Correct 222 ms 2448 KB Output is correct
7 Correct 193 ms 2456 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1020 ms 106684 KB Output is correct
12 Correct 1048 ms 106576 KB Output is correct
13 Correct 996 ms 106960 KB Output is correct
14 Correct 975 ms 106716 KB Output is correct
15 Correct 976 ms 106708 KB Output is correct
16 Correct 1000 ms 106580 KB Output is correct
17 Correct 949 ms 106516 KB Output is correct
18 Correct 972 ms 108520 KB Output is correct
19 Correct 3 ms 600 KB Output is correct
20 Incorrect 2 ms 344 KB Output isn't correct
21 Halted 0 ms 0 KB -