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Submission #256201

# Submission time Handle Problem Language Result Execution time Memory
256201 2020-08-02T11:24:46 Z IgorI Bubble Sort 2 (JOI18_bubblesort2) C++17
60 / 100
 9000 ms 11128 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 = 2000;

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

# Verdict Execution time Memory Grader output
1 Correct 52 ms 384 KB Output is correct
2 Correct 77 ms 384 KB Output is correct
3 Correct 197 ms 632 KB Output is correct
4 Correct 195 ms 512 KB Output is correct
5 Correct 190 ms 636 KB Output is correct
6 Correct 182 ms 512 KB Output is correct
7 Correct 188 ms 512 KB Output is correct
8 Correct 182 ms 632 KB Output is correct
9 Correct 190 ms 512 KB Output is correct
10 Correct 187 ms 512 KB Output is correct
11 Correct 187 ms 632 KB Output is correct
12 Correct 192 ms 512 KB Output is correct
13 Correct 188 ms 632 KB Output is correct
14 Correct 187 ms 632 KB Output is correct
15 Correct 183 ms 632 KB Output is correct
16 Correct 190 ms 632 KB Output is correct
17 Correct 188 ms 636 KB Output is correct
18 Correct 188 ms 512 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 384 KB Output is correct
2 Correct 77 ms 384 KB Output is correct
3 Correct 197 ms 632 KB Output is correct
4 Correct 195 ms 512 KB Output is correct
5 Correct 190 ms 636 KB Output is correct
6 Correct 182 ms 512 KB Output is correct
7 Correct 188 ms 512 KB Output is correct
8 Correct 182 ms 632 KB Output is correct
9 Correct 190 ms 512 KB Output is correct
10 Correct 187 ms 512 KB Output is correct
11 Correct 187 ms 632 KB Output is correct
12 Correct 192 ms 512 KB Output is correct
13 Correct 188 ms 632 KB Output is correct
14 Correct 187 ms 632 KB Output is correct
15 Correct 183 ms 632 KB Output is correct
16 Correct 190 ms 632 KB Output is correct
17 Correct 188 ms 636 KB Output is correct
18 Correct 188 ms 512 KB Output is correct
19 Correct 686 ms 1016 KB Output is correct
20 Correct 785 ms 1016 KB Output is correct
21 Correct 725 ms 1016 KB Output is correct
22 Correct 752 ms 896 KB Output is correct
23 Correct 737 ms 1016 KB Output is correct
24 Correct 743 ms 1008 KB Output is correct
25 Correct 738 ms 1016 KB Output is correct
26 Correct 730 ms 1008 KB Output is correct
27 Correct 727 ms 1016 KB Output is correct
28 Correct 726 ms 1016 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1357 ms 1912 KB Output is correct
2 Correct 3096 ms 2888 KB Output is correct
3 Correct 5053 ms 3988 KB Output is correct
4 Correct 5095 ms 3960 KB Output is correct
5 Correct 4981 ms 3992 KB Output is correct
6 Correct 4970 ms 3988 KB Output is correct
7 Correct 4877 ms 3988 KB Output is correct
8 Correct 4898 ms 3968 KB Output is correct
9 Correct 5041 ms 3984 KB Output is correct
10 Correct 4449 ms 3984 KB Output is correct
11 Correct 4487 ms 3988 KB Output is correct
12 Correct 4335 ms 3988 KB Output is correct
13 Correct 4357 ms 3980 KB Output is correct
14 Correct 4349 ms 3984 KB Output is correct
15 Correct 4313 ms 3968 KB Output is correct
16 Correct 4390 ms 3984 KB Output is correct
17 Correct 4451 ms 4088 KB Output is correct
18 Correct 4422 ms 3984 KB Output is correct

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 384 KB Output is correct
2 Correct 77 ms 384 KB Output is correct
3 Correct 197 ms 632 KB Output is correct
4 Correct 195 ms 512 KB Output is correct
5 Correct 190 ms 636 KB Output is correct
6 Correct 182 ms 512 KB Output is correct
7 Correct 188 ms 512 KB Output is correct
8 Correct 182 ms 632 KB Output is correct
9 Correct 190 ms 512 KB Output is correct
10 Correct 187 ms 512 KB Output is correct
11 Correct 187 ms 632 KB Output is correct
12 Correct 192 ms 512 KB Output is correct
13 Correct 188 ms 632 KB Output is correct
14 Correct 187 ms 632 KB Output is correct
15 Correct 183 ms 632 KB Output is correct
16 Correct 190 ms 632 KB Output is correct
17 Correct 188 ms 636 KB Output is correct
18 Correct 188 ms 512 KB Output is correct
19 Correct 686 ms 1016 KB Output is correct
20 Correct 785 ms 1016 KB Output is correct
21 Correct 725 ms 1016 KB Output is correct
22 Correct 752 ms 896 KB Output is correct
23 Correct 737 ms 1016 KB Output is correct
24 Correct 743 ms 1008 KB Output is correct
25 Correct 738 ms 1016 KB Output is correct
26 Correct 730 ms 1008 KB Output is correct
27 Correct 727 ms 1016 KB Output is correct
28 Correct 726 ms 1016 KB Output is correct
29 Correct 1357 ms 1912 KB Output is correct
30 Correct 3096 ms 2888 KB Output is correct
31 Correct 5053 ms 3988 KB Output is correct
32 Correct 5095 ms 3960 KB Output is correct
33 Correct 4981 ms 3992 KB Output is correct
34 Correct 4970 ms 3988 KB Output is correct
35 Correct 4877 ms 3988 KB Output is correct
36 Correct 4898 ms 3968 KB Output is correct
37 Correct 5041 ms 3984 KB Output is correct
38 Correct 4449 ms 3984 KB Output is correct
39 Correct 4487 ms 3988 KB Output is correct
40 Correct 4335 ms 3988 KB Output is correct
41 Correct 4357 ms 3980 KB Output is correct
42 Correct 4349 ms 3984 KB Output is correct
43 Correct 4313 ms 3968 KB Output is correct
44 Correct 4390 ms 3984 KB Output is correct
45 Correct 4451 ms 4088 KB Output is correct
46 Correct 4422 ms 3984 KB Output is correct
47 Execution timed out 9048 ms 11128 KB Time limit exceeded
48 Halted 0 ms 0 KB -