結果

問題 No.1441 MErGe
ユーザー saxofone111saxofone111
提出日時 2021-04-05 21:26:24
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 795 ms / 1,000 ms
コード長 6,113 bytes
コンパイル時間 2,582 ms
コンパイル使用メモリ 208,632 KB
実行使用メモリ 18,416 KB
最終ジャッジ日時 2023-08-30 07:41:27
合計ジャッジ時間 20,765 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge15
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
4,376 KB
testcase_01 AC 2 ms
4,376 KB
testcase_02 AC 2 ms
4,376 KB
testcase_03 AC 5 ms
4,380 KB
testcase_04 AC 6 ms
4,380 KB
testcase_05 AC 17 ms
4,376 KB
testcase_06 AC 17 ms
4,380 KB
testcase_07 AC 17 ms
4,376 KB
testcase_08 AC 187 ms
6,808 KB
testcase_09 AC 183 ms
6,736 KB
testcase_10 AC 317 ms
6,740 KB
testcase_11 AC 286 ms
5,088 KB
testcase_12 AC 318 ms
6,668 KB
testcase_13 AC 602 ms
18,416 KB
testcase_14 AC 611 ms
18,308 KB
testcase_15 AC 645 ms
18,056 KB
testcase_16 AC 593 ms
18,408 KB
testcase_17 AC 574 ms
18,060 KB
testcase_18 AC 544 ms
17,516 KB
testcase_19 AC 602 ms
18,248 KB
testcase_20 AC 484 ms
17,620 KB
testcase_21 AC 432 ms
11,168 KB
testcase_22 AC 643 ms
10,864 KB
testcase_23 AC 782 ms
18,352 KB
testcase_24 AC 779 ms
18,344 KB
testcase_25 AC 789 ms
18,328 KB
testcase_26 AC 795 ms
18,308 KB
testcase_27 AC 772 ms
18,352 KB
testcase_28 AC 521 ms
18,364 KB
testcase_29 AC 525 ms
18,412 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include "bits/stdc++.h"

#define MOD 1000000007
#define rep(i, n) for(ll i=0; i < (n); i++)
#define rrep(i, n) for(ll i=(n)-1; i >=0; i--)
#define ALL(v) v.begin(),v.end()
#define rALL(v) v.rbegin(),v.rend()
#define FOR(i, j, k) for(ll i=j;i<k;i++)
#define debug_print(var) cerr << #var << "=" << var <<endl;
#define DUMP(i, v)for(ll i=0;i<v.size();i++)cerr<<v[i]<<" "
#define fi first
#define se second

using namespace std;
typedef long long int ll;
typedef vector<ll> llvec;
typedef vector<double> dvec;
typedef pair<ll, ll> P;
typedef long double ld;
struct edge{ll x, c;};

template <class S,
          S (*op)(S, S),
  S (*e)(),
  class F,
  S (*mapping)(F, S),
  F (*composition)(F, F),
          F (*id)()>
struct lazy_segtree {
public:
  int ceil_pow2(int n) {
    int x = 0;
    while ((1U << x) < (unsigned int)(n)) x++;
    return x;
  }
  lazy_segtree() : lazy_segtree(0) {}
  lazy_segtree(int n) : lazy_segtree(std::vector<S>(n, e())) {}
  lazy_segtree(const std::vector<S>& v) : _n(int(v.size())) {
    log = ceil_pow2(_n);
    size = 1 << log;
    d = std::vector<S>(2 * size, e());
    lz = std::vector<F>(size, id());
    for (int i = 0; i < _n; i++) d[size + i] = v[i];
    for (int i = size - 1; i >= 1; i--) {
      update(i);
    }
  }

  void set(int p, S x) {
    assert(0 <= p && p < _n);
    p += size;
    for (int i = log; i >= 1; i--) push(p >> i);
    d[p] = x;
    for (int i = 1; i <= log; i++) update(p >> i);
  }

  S get(int p) {
    assert(0 <= p && p < _n);
    p += size;
    for (int i = log; i >= 1; i--) push(p >> i);
    return d[p];
  }

  S prod(int l, int r) {
    assert(0 <= l && l <= r && r <= _n);
    if (l == r) return e();

    l += size;
    r += size;

    for (int i = log; i >= 1; i--) {
      if (((l >> i) << i) != l) push(l >> i);
      if (((r >> i) << i) != r) push(r >> i);
    }

    S sml = e(), smr = e();
    while (l < r) {
      if (l & 1) sml = op(sml, d[l++]);
      if (r & 1) smr = op(d[--r], smr);
      l >>= 1;
      r >>= 1;
    }

    return op(sml, smr);
  }

  S all_prod() { return d[1]; }

  void apply(int p, F f) {
    assert(0 <= p && p < _n);
    p += size;
    for (int i = log; i >= 1; i--) push(p >> i);
    d[p] = mapping(f, d[p]);
    for (int i = 1; i <= log; i++) update(p >> i);
  }

  void apply(int l, int r, F f) {
    assert(0 <= l && l <= r && r <= _n);
    if (l == r) return;

    l += size;
    r += size;

    for (int i = log; i >= 1; i--) {
      if (((l >> i) << i) != l) push(l >> i);
      if (((r >> i) << i) != r) push((r - 1) >> i);
    }

    {
      int l2 = l, r2 = r;
      while (l < r) {
        if (l & 1) all_apply(l++, f);
        if (r & 1) all_apply(--r, f);
        l >>= 1;
        r >>= 1;
      }
      l = l2;
      r = r2;
    }

    for (int i = 1; i <= log; i++) {
      if (((l >> i) << i) != l) update(l >> i);
      if (((r >> i) << i) != r) update((r - 1) >> i);
    }
  }

  template <bool (*g)(S)> int max_right(int l) {
    return max_right(l, [](S x) { return g(x); });
  }
  template <class G> int max_right(int l, G g) {
    assert(0 <= l && l <= _n);
    assert(g(e()));
    if (l == _n) return _n;
    l += size;
    for (int i = log; i >= 1; i--) push(l >> i);
    S sm = e();
    do {
      while (l % 2 == 0) l >>= 1;
      if (!g(op(sm, d[l]))) {
        while (l < size) {
          push(l);
          l = (2 * l);
          if (g(op(sm, d[l]))) {
            sm = op(sm, d[l]);
            l++;
          }
        }
        return l - size;
      }
      sm = op(sm, d[l]);
      l++;
    } while ((l & -l) != l);
    return _n;
  }

  template <bool (*g)(S)> int min_left(int r) {
    return min_left(r, [](S x) { return g(x); });
  }
  template <class G> int min_left(int r, G g) {
    assert(0 <= r && r <= _n);
    assert(g(e()));
    if (r == 0) return 0;
    r += size;
    for (int i = log; i >= 1; i--) push((r - 1) >> i);
    S sm = e();
    do {
      r--;
      while (r > 1 && (r % 2)) r >>= 1;
      if (!g(op(d[r], sm))) {
        while (r < size) {
          push(r);
          r = (2 * r + 1);
          if (g(op(d[r], sm))) {
            sm = op(d[r], sm);
            r--;
          }
        }
        return r + 1 - size;
      }
      sm = op(d[r], sm);
    } while ((r & -r) != r);
    return 0;
  }

private:
  int _n, size, log;
  std::vector<S> d;
  std::vector<F> lz;

  void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); }
  void all_apply(int k, F f) {
    d[k] = mapping(f, d[k]);
    if (k < size) lz[k] = composition(f, lz[k]);
  }
  void push(int k) {
    all_apply(2 * k, lz[k]);
    all_apply(2 * k + 1, lz[k]);
    lz[k] = id();
  }
};

using S = P;

using F = P;
F id(){
  return {-1e18, -1e18};
}
S e(){
  return {0, 0};
}

S op(S a, S b){
  return {a.fi + b.fi, a.se + b.se};
}

S mapping(F a, S b){
  if(a==id())return b;
  return a;
}

F composition(F b, F a){
  if(b==id())return a;
  else return b;
}


ll l, r;

bool gl(S x){
  return x.se<=l;
}
bool gr(S x){
  return x.se<=r;
}

//usage lazy_segtree<S, op, e, F, mapping, composition, id>

/**************************************
 ** A main function starts from here  **
 ***************************************/
int main(){
  ll N, Q;
  cin >> N >> Q;
  vector<S> v(N);
  rep(i, N){
    ll a;
    cin >> a;
    v[i] = {a, 1};
  }
  lazy_segtree<S, op, e, F, mapping, composition, id> lz(v);

  while(Q--){
    ll t;
    cin >> t >> l >> r;
    l--;
    /*
    ll ok = N, ng = -1;
    while(abs(ok-ng)>1){
      ll m = (ok+ng)/2;
      auto p = lz.prod(0, m);
      if(p.se>=l){
        ok = m;
      }else{
        ng = m;
      }
    }
    l = ok;
    ok = N;
    ng = -1;
    while(abs(ok-ng)>1){
      ll m = (ok+ng)/2;
      auto p = lz.prod(0, m);
      if(p.se>=r){
        ok = m;
      }else{
        ng = m;
      }
    }
    r = ok;
    */
    l = lz.max_right<gl>(0);
    r = lz.max_right<gr>(0);
    //l--;//r++;
    //cerr << l <<" " << r<<endl;
    if(t==1){
      auto p = lz.prod(l, r);
      lz.apply(l, l+1, {p.fi, 1});
      lz.apply(l+1, r, {0, 0});
    }else{
      auto p = lz.prod(l, r);
      cout << p.fi << endl;
    }
  }
  return 0;
}
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