oj.uz

답안 #256158

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
256158 2020-08-02T10:38:25 Z IgorI Bubble Sort 2 (JOI18_bubblesort2) C++17
60 / 100
 9000 ms 11176 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 = 200;

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;
        #ifdef LOCAL
        cout << "after i = " << i << endl;
        for (int j = 0; j < n / K + 1; j++)
        {
            cout << j << ": " << endl;
            for (int i = 0; i < K; i++) cout << data[j].a[i].x << " ";
            cout << endl;
            for (int i = 0; i < K; i++) cout << data[j].d.Get(i, i + 1) << " ";
            cout << endl;
        }
        #endif // LOCAL
    }
    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 33 ms 384 KB Output is correct
2 Correct 54 ms 384 KB Output is correct
3 Correct 129 ms 512 KB Output is correct
4 Correct 137 ms 508 KB Output is correct
5 Correct 133 ms 512 KB Output is correct
6 Correct 110 ms 512 KB Output is correct
7 Correct 132 ms 512 KB Output is correct
8 Correct 126 ms 512 KB Output is correct
9 Correct 128 ms 632 KB Output is correct
10 Correct 112 ms 512 KB Output is correct
11 Correct 112 ms 516 KB Output is correct
12 Correct 112 ms 632 KB Output is correct
13 Correct 108 ms 512 KB Output is correct
14 Correct 107 ms 512 KB Output is correct
15 Correct 110 ms 512 KB Output is correct
16 Correct 104 ms 512 KB Output is correct
17 Correct 115 ms 632 KB Output is correct
18 Correct 105 ms 512 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 384 KB Output is correct
2 Correct 54 ms 384 KB Output is correct
3 Correct 129 ms 512 KB Output is correct
4 Correct 137 ms 508 KB Output is correct
5 Correct 133 ms 512 KB Output is correct
6 Correct 110 ms 512 KB Output is correct
7 Correct 132 ms 512 KB Output is correct
8 Correct 126 ms 512 KB Output is correct
9 Correct 128 ms 632 KB Output is correct
10 Correct 112 ms 512 KB Output is correct
11 Correct 112 ms 516 KB Output is correct
12 Correct 112 ms 632 KB Output is correct
13 Correct 108 ms 512 KB Output is correct
14 Correct 107 ms 512 KB Output is correct
15 Correct 110 ms 512 KB Output is correct
16 Correct 104 ms 512 KB Output is correct
17 Correct 115 ms 632 KB Output is correct
18 Correct 105 ms 512 KB Output is correct
19 Correct 494 ms 768 KB Output is correct
20 Correct 565 ms 896 KB Output is correct
21 Correct 505 ms 1016 KB Output is correct
22 Correct 537 ms 1016 KB Output is correct
23 Correct 468 ms 1016 KB Output is correct
24 Correct 458 ms 1016 KB Output is correct
25 Correct 440 ms 1016 KB Output is correct
26 Correct 442 ms 896 KB Output is correct
27 Correct 411 ms 936 KB Output is correct
28 Correct 410 ms 1016 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 989 ms 1912 KB Output is correct
2 Correct 3038 ms 2908 KB Output is correct
3 Correct 5606 ms 3936 KB Output is correct
4 Correct 5618 ms 3940 KB Output is correct
5 Correct 5022 ms 3936 KB Output is correct
6 Correct 5082 ms 3940 KB Output is correct
7 Correct 4774 ms 3936 KB Output is correct
8 Correct 4747 ms 3932 KB Output is correct
9 Correct 4909 ms 3932 KB Output is correct
10 Correct 2588 ms 3936 KB Output is correct
11 Correct 2671 ms 3840 KB Output is correct
12 Correct 2606 ms 3940 KB Output is correct
13 Correct 2576 ms 3960 KB Output is correct
14 Correct 2572 ms 3960 KB Output is correct
15 Correct 2566 ms 3960 KB Output is correct
16 Correct 2499 ms 3960 KB Output is correct
17 Correct 2552 ms 3940 KB Output is correct
18 Correct 2558 ms 3832 KB Output is correct

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 384 KB Output is correct
2 Correct 54 ms 384 KB Output is correct
3 Correct 129 ms 512 KB Output is correct
4 Correct 137 ms 508 KB Output is correct
5 Correct 133 ms 512 KB Output is correct
6 Correct 110 ms 512 KB Output is correct
7 Correct 132 ms 512 KB Output is correct
8 Correct 126 ms 512 KB Output is correct
9 Correct 128 ms 632 KB Output is correct
10 Correct 112 ms 512 KB Output is correct
11 Correct 112 ms 516 KB Output is correct
12 Correct 112 ms 632 KB Output is correct
13 Correct 108 ms 512 KB Output is correct
14 Correct 107 ms 512 KB Output is correct
15 Correct 110 ms 512 KB Output is correct
16 Correct 104 ms 512 KB Output is correct
17 Correct 115 ms 632 KB Output is correct
18 Correct 105 ms 512 KB Output is correct
19 Correct 494 ms 768 KB Output is correct
20 Correct 565 ms 896 KB Output is correct
21 Correct 505 ms 1016 KB Output is correct
22 Correct 537 ms 1016 KB Output is correct
23 Correct 468 ms 1016 KB Output is correct
24 Correct 458 ms 1016 KB Output is correct
25 Correct 440 ms 1016 KB Output is correct
26 Correct 442 ms 896 KB Output is correct
27 Correct 411 ms 936 KB Output is correct
28 Correct 410 ms 1016 KB Output is correct
29 Correct 989 ms 1912 KB Output is correct
30 Correct 3038 ms 2908 KB Output is correct
31 Correct 5606 ms 3936 KB Output is correct
32 Correct 5618 ms 3940 KB Output is correct
33 Correct 5022 ms 3936 KB Output is correct
34 Correct 5082 ms 3940 KB Output is correct
35 Correct 4774 ms 3936 KB Output is correct
36 Correct 4747 ms 3932 KB Output is correct
37 Correct 4909 ms 3932 KB Output is correct
38 Correct 2588 ms 3936 KB Output is correct
39 Correct 2671 ms 3840 KB Output is correct
40 Correct 2606 ms 3940 KB Output is correct
41 Correct 2576 ms 3960 KB Output is correct
42 Correct 2572 ms 3960 KB Output is correct
43 Correct 2566 ms 3960 KB Output is correct
44 Correct 2499 ms 3960 KB Output is correct
45 Correct 2552 ms 3940 KB Output is correct
46 Correct 2558 ms 3832 KB Output is correct
47 Execution timed out 9093 ms 11176 KB Time limit exceeded
48 Halted 0 ms 0 KB -