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답안 #256199

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
256199 2020-08-02T11:23:45 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 = 760;

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]);
    }
    void destroy(int L, int R, int V, vector<Element> &val)
    {
        if (L + 1 == R)
        {
            val[L].sp = tree[V];
            return;
        }
        Push(V);
        int M = (L + R) / 2;
        destroy(L, M, 2 * V + 1, val);
        destroy(M, R, 2 * V + 2, val);
    }
};

bool comp(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)
    {
        d.destroy(0, K, 0, a);
        int id = 0;
        for (int i = 0; i < K; i++)
        {
            if (a[i].pos_order == pos_in_block) id = i;
        }
        int Z = a[id].x;
        for (int i = 0; i < K; i++)
        {
            if (a[i].pos_order < pos_in_block)
            {
                if (a[i].x > A) initial++;
            }
            if (a[i].pos_order > pos_in_block)
            {
                a[i].sp -= Z > a[i].x;
                a[i].sp += A > a[i].x;
            }
        }
        a[id].x = A;
        a[id].sp = initial;
        while (id > 0 && a[id - 1].x > a[id].x) swap(a[id - 1], a[id]), id--;
        while (id + 1 < K && a[id + 1].x < a[id].x) swap(a[id + 1], a[id]), id++;
        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 20 ms 384 KB Output is correct
2 Correct 32 ms 384 KB Output is correct
3 Correct 74 ms 512 KB Output is correct
4 Correct 75 ms 512 KB Output is correct
5 Correct 75 ms 512 KB Output is correct
6 Correct 69 ms 512 KB Output is correct
7 Correct 69 ms 512 KB Output is correct
8 Correct 69 ms 636 KB Output is correct
9 Correct 74 ms 512 KB Output is correct
10 Correct 71 ms 632 KB Output is correct
11 Correct 70 ms 512 KB Output is correct
12 Correct 72 ms 512 KB Output is correct
13 Correct 69 ms 508 KB Output is correct
14 Correct 77 ms 512 KB Output is correct
15 Correct 71 ms 512 KB Output is correct
16 Correct 73 ms 632 KB Output is correct
17 Correct 79 ms 512 KB Output is correct
18 Correct 74 ms 512 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 384 KB Output is correct
2 Correct 32 ms 384 KB Output is correct
3 Correct 74 ms 512 KB Output is correct
4 Correct 75 ms 512 KB Output is correct
5 Correct 75 ms 512 KB Output is correct
6 Correct 69 ms 512 KB Output is correct
7 Correct 69 ms 512 KB Output is correct
8 Correct 69 ms 636 KB Output is correct
9 Correct 74 ms 512 KB Output is correct
10 Correct 71 ms 632 KB Output is correct
11 Correct 70 ms 512 KB Output is correct
12 Correct 72 ms 512 KB Output is correct
13 Correct 69 ms 508 KB Output is correct
14 Correct 77 ms 512 KB Output is correct
15 Correct 71 ms 512 KB Output is correct
16 Correct 73 ms 632 KB Output is correct
17 Correct 79 ms 512 KB Output is correct
18 Correct 74 ms 512 KB Output is correct
19 Correct 274 ms 888 KB Output is correct
20 Correct 313 ms 948 KB Output is correct
21 Correct 283 ms 896 KB Output is correct
22 Correct 301 ms 1016 KB Output is correct
23 Correct 308 ms 896 KB Output is correct
24 Correct 290 ms 1016 KB Output is correct
25 Correct 290 ms 896 KB Output is correct
26 Correct 286 ms 1016 KB Output is correct
27 Correct 276 ms 1016 KB Output is correct
28 Correct 279 ms 1016 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 550 ms 1912 KB Output is correct
2 Correct 1500 ms 2936 KB Output is correct
3 Correct 2659 ms 3916 KB Output is correct
4 Correct 2682 ms 3960 KB Output is correct
5 Correct 2463 ms 3960 KB Output is correct
6 Correct 2600 ms 3916 KB Output is correct
7 Correct 2439 ms 3916 KB Output is correct
8 Correct 2418 ms 3960 KB Output is correct
9 Correct 2395 ms 3840 KB Output is correct
10 Correct 1808 ms 3840 KB Output is correct
11 Correct 1835 ms 3916 KB Output is correct
12 Correct 1791 ms 3916 KB Output is correct
13 Correct 1802 ms 3916 KB Output is correct
14 Correct 1771 ms 3920 KB Output is correct
15 Correct 1785 ms 3912 KB Output is correct
16 Correct 1781 ms 3908 KB Output is correct
17 Correct 1717 ms 3840 KB Output is correct
18 Correct 1739 ms 3912 KB Output is correct

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 384 KB Output is correct
2 Correct 32 ms 384 KB Output is correct
3 Correct 74 ms 512 KB Output is correct
4 Correct 75 ms 512 KB Output is correct
5 Correct 75 ms 512 KB Output is correct
6 Correct 69 ms 512 KB Output is correct
7 Correct 69 ms 512 KB Output is correct
8 Correct 69 ms 636 KB Output is correct
9 Correct 74 ms 512 KB Output is correct
10 Correct 71 ms 632 KB Output is correct
11 Correct 70 ms 512 KB Output is correct
12 Correct 72 ms 512 KB Output is correct
13 Correct 69 ms 508 KB Output is correct
14 Correct 77 ms 512 KB Output is correct
15 Correct 71 ms 512 KB Output is correct
16 Correct 73 ms 632 KB Output is correct
17 Correct 79 ms 512 KB Output is correct
18 Correct 74 ms 512 KB Output is correct
19 Correct 274 ms 888 KB Output is correct
20 Correct 313 ms 948 KB Output is correct
21 Correct 283 ms 896 KB Output is correct
22 Correct 301 ms 1016 KB Output is correct
23 Correct 308 ms 896 KB Output is correct
24 Correct 290 ms 1016 KB Output is correct
25 Correct 290 ms 896 KB Output is correct
26 Correct 286 ms 1016 KB Output is correct
27 Correct 276 ms 1016 KB Output is correct
28 Correct 279 ms 1016 KB Output is correct
29 Correct 550 ms 1912 KB Output is correct
30 Correct 1500 ms 2936 KB Output is correct
31 Correct 2659 ms 3916 KB Output is correct
32 Correct 2682 ms 3960 KB Output is correct
33 Correct 2463 ms 3960 KB Output is correct
34 Correct 2600 ms 3916 KB Output is correct
35 Correct 2439 ms 3916 KB Output is correct
36 Correct 2418 ms 3960 KB Output is correct
37 Correct 2395 ms 3840 KB Output is correct
38 Correct 1808 ms 3840 KB Output is correct
39 Correct 1835 ms 3916 KB Output is correct
40 Correct 1791 ms 3916 KB Output is correct
41 Correct 1802 ms 3916 KB Output is correct
42 Correct 1771 ms 3920 KB Output is correct
43 Correct 1785 ms 3912 KB Output is correct
44 Correct 1781 ms 3908 KB Output is correct
45 Correct 1717 ms 3840 KB Output is correct
46 Correct 1739 ms 3912 KB Output is correct
47 Execution timed out 9035 ms 11176 KB Time limit exceeded
48 Halted 0 ms 0 KB -