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답안 #256167

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
256167 2020-08-02T10:45:43 Z IgorI Bubble Sort 2 (JOI18_bubblesort2) C++17
38 / 100
 9000 ms 2816 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<vector<int> > vvi;
typedef vector<ll> vll;

#define forn(i, n) for (int (i) = 0; (i) != (n); (i)++)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()
#define popcount(x) __builtin_popcount(x)
#define popcountll(x) __builtin_popcountll(x)
#define fi first
#define se second
#define re return
#define pb push_back
#define uniq(x) sort(all(x)); (x).resize(unique(all(x)) - (x).begin())

#ifdef LOCAL
#define dbg(x) cerr << __LINE__ << " " << #x << " " << x << endl
#define ln cerr << __LINE__ << endl
#else
#define dbg(x) void(0)
#define ln void(0)
#endif // LOCAL

const int INF = 1e9 + 7;
const int K = 756;

struct Element{
    int x;
    int pos_order;
    int sp;
};

struct SegTree{
    vector<int> tree;
    vector<int> push;
    SegTree()
    {
        tree.resize(4 * K);
        push.resize(4 * K);
    }
    void Push(int V)
    {
        tree[2 * V + 1] += push[V];
        push[2 * V + 1] += push[V];
        tree[2 * V + 2] += push[V];
        push[2 * V + 2] += push[V];
        push[V] = 0;
    }
    void __Add(int l, int r, int x, int L, int R, int V)
    {
        if (l <= L && R <= r)
        {
            tree[V] += x;
            push[V] += x;
            return;
        }
        if (r <= L || R <= l)
        {
            return;
        }
        int M = (L + R) / 2;
        Push(V);
        __Add(l, r, x, L, M, 2 * V + 1);
        __Add(l, r, x, M, R, 2 * V + 2);
        tree[V] = max(tree[2 * V + 1], tree[2 * V + 2]);
    }
    int Add(int l, int r, int x)
    {
        __Add(l, r, x, 0, K, 0);
    }
    int __Get(int l, int r, int L, int R, int V)
    {
        if (l <= L && R <= r)
        {
            return tree[V];
        }
        if (r <= L || R <= l)
        {
            return 0;
        }
        int M = (L + R) / 2;
        Push(V);
        return max(__Get(l, r, L, M, 2 * V + 1), __Get(l, r, M, R, 2 * V + 2));
    }
    int Get(int l, int r)
    {
        return __Get(l, r, 0, K, 0);
    }
    void build(int L, int R, int V, vector<Element> &val)
    {
        if (L + 1 == R)
        {
            tree[V] = val[L].sp;
            push[V] = 0;
            return;
        }
        int M = (L + R) / 2;
        build(L, M, 2 * V + 1, val);
        build(M, R, 2 * V + 2, val);
        push[V] = 0;
        tree[V] = max(tree[2 * V + 1], tree[2 * V + 2]);
    }
};

bool order(Element a, Element b)
{
    return a.pos_order < b.pos_order;
}

bool sorted(Element a, Element b)
{
    return a.x < b.x;
}

struct Block{
    SegTree d;
    vector<Element> a;
    Block()
    {
        a.resize(K);
        for (int i = 0; i < K; i++)
        {
            a[i].x = INF;
            a[i].pos_order = i;
        }
    }
    int cntmore(int x)
    {
        int L = -1, R = a.size();
        while (L + 1 < R)
        {
            int M = (L + R) / 2;
            if (a[M].x > x)
                R = M;
            else
                L = M;
        }
        return K - R;
    }
    void change(int pos_in_block, int initial, int A)
    {
        for (int i = 0; i < K; i++)
        {
            a[i].sp = d.Get(i, i + 1);
        }
        sort(all(a), order);
        int Z = a[pos_in_block].x;
        a[pos_in_block].x = A;
        for (int i = 0; i < pos_in_block; i++)
        {
            if (a[i].x > a[pos_in_block].x) initial++;
        }
        a[pos_in_block].sp = initial;
        for (int i = pos_in_block + 1; i < K; i++)
        {
            a[i].sp -= Z > a[i].x;
            a[i].sp += A > a[i].x;
        }
        sort(all(a), sorted);
        d.build(0, K, 0, a);
    }
    void query(int x, int val)
    {
        int L = -1, R = K;
        while (L + 1 < R)
        {
            int M = (L + R) / 2;
            if (a[M].x < x)
                L = M;
            else
                R = M;
        }
        d.Add(0, L + 1, val);
    }
};

vi countScans(vi a, vi x, vi v)
{
    int n = a.size(), q = x.size();
    vi ans(q);
    vector<Block> data(n / K + 1);
    for (int i = 0; i < n; i++)
    {
        int bl = i / K;
        int ps = i % K;
        int initial = 0;
        for (int j = 0; j < bl; j++) initial += data[j].cntmore(a[i]);
        data[bl].change(ps, initial, a[i]);
    }
    for (int i = 0; i < q; i++)
    {
        int bl = x[i] / K;
        int ps = x[i] % K;
        int initial = 0;
        for (int j = 0; j < bl; j++) initial += data[j].cntmore(v[i]);
        data[bl].change(ps, initial, v[i]);
        int fr = a[x[i]];
        int to = v[i];
        a[x[i]] = v[i];
        for (int j = bl + 1; j < n / K + 1; j++) data[j].query(fr, -1);
        for (int j = bl + 1; j < n / K + 1; j++) data[j].query(to, 1);
        int answer = 0;
        for (int j = 0; j < n / K + 1; j++) answer = max(answer, data[j].d.Get(0, K));
        ans[i] = answer;
    }
    return ans;
}

#ifdef LOCAL
signed main()
{
    int n, q;
    cin >> n >> q;
    vi a(n), x(q), v(q);
    forn(i, n) cin >> a[i];
    forn(i, q) cin >> x[i] >> v[i];
    vi ans = countScans(a, x, v);
    forn(i, q) cout << ans[i] << "\n";
}
#endif // LOCAL

/*
10 10
1 2 3 4 5 1 2 3 4 5
0 10
1 9
2 8
3 7
4 6
5 5
6 4
7 3
8 2
9 1
*/

Compilation message

bubblesort2.cpp: In member function 'int SegTree::Add(int, int, int)':
bubblesort2.cpp:77:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 151 ms 504 KB Output is correct
2 Correct 263 ms 384 KB Output is correct
3 Correct 599 ms 512 KB Output is correct
4 Correct 603 ms 512 KB Output is correct
5 Correct 594 ms 632 KB Output is correct
6 Correct 528 ms 512 KB Output is correct
7 Correct 553 ms 632 KB Output is correct
8 Correct 564 ms 512 KB Output is correct
9 Correct 615 ms 632 KB Output is correct
10 Correct 563 ms 632 KB Output is correct
11 Correct 534 ms 632 KB Output is correct
12 Correct 550 ms 632 KB Output is correct
13 Correct 539 ms 632 KB Output is correct
14 Correct 520 ms 632 KB Output is correct
15 Correct 528 ms 512 KB Output is correct
16 Correct 504 ms 632 KB Output is correct
17 Correct 493 ms 512 KB Output is correct
18 Correct 496 ms 632 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 151 ms 504 KB Output is correct
2 Correct 263 ms 384 KB Output is correct
3 Correct 599 ms 512 KB Output is correct
4 Correct 603 ms 512 KB Output is correct
5 Correct 594 ms 632 KB Output is correct
6 Correct 528 ms 512 KB Output is correct
7 Correct 553 ms 632 KB Output is correct
8 Correct 564 ms 512 KB Output is correct
9 Correct 615 ms 632 KB Output is correct
10 Correct 563 ms 632 KB Output is correct
11 Correct 534 ms 632 KB Output is correct
12 Correct 550 ms 632 KB Output is correct
13 Correct 539 ms 632 KB Output is correct
14 Correct 520 ms 632 KB Output is correct
15 Correct 528 ms 512 KB Output is correct
16 Correct 504 ms 632 KB Output is correct
17 Correct 493 ms 512 KB Output is correct
18 Correct 496 ms 632 KB Output is correct
19 Correct 2180 ms 768 KB Output is correct
20 Correct 2415 ms 940 KB Output is correct
21 Correct 2333 ms 1016 KB Output is correct
22 Correct 2415 ms 1016 KB Output is correct
23 Correct 2178 ms 936 KB Output is correct
24 Correct 2184 ms 948 KB Output is correct
25 Correct 2085 ms 896 KB Output is correct
26 Correct 2118 ms 1016 KB Output is correct
27 Correct 2094 ms 896 KB Output is correct
28 Correct 2119 ms 896 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4130 ms 1912 KB Output is correct
2 Execution timed out 9097 ms 2816 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 151 ms 504 KB Output is correct
2 Correct 263 ms 384 KB Output is correct
3 Correct 599 ms 512 KB Output is correct
4 Correct 603 ms 512 KB Output is correct
5 Correct 594 ms 632 KB Output is correct
6 Correct 528 ms 512 KB Output is correct
7 Correct 553 ms 632 KB Output is correct
8 Correct 564 ms 512 KB Output is correct
9 Correct 615 ms 632 KB Output is correct
10 Correct 563 ms 632 KB Output is correct
11 Correct 534 ms 632 KB Output is correct
12 Correct 550 ms 632 KB Output is correct
13 Correct 539 ms 632 KB Output is correct
14 Correct 520 ms 632 KB Output is correct
15 Correct 528 ms 512 KB Output is correct
16 Correct 504 ms 632 KB Output is correct
17 Correct 493 ms 512 KB Output is correct
18 Correct 496 ms 632 KB Output is correct
19 Correct 2180 ms 768 KB Output is correct
20 Correct 2415 ms 940 KB Output is correct
21 Correct 2333 ms 1016 KB Output is correct
22 Correct 2415 ms 1016 KB Output is correct
23 Correct 2178 ms 936 KB Output is correct
24 Correct 2184 ms 948 KB Output is correct
25 Correct 2085 ms 896 KB Output is correct
26 Correct 2118 ms 1016 KB Output is correct
27 Correct 2094 ms 896 KB Output is correct
28 Correct 2119 ms 896 KB Output is correct
29 Correct 4130 ms 1912 KB Output is correct
30 Execution timed out 9097 ms 2816 KB Time limit exceeded
31 Halted 0 ms 0 KB -