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답안 #457994

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
457994 2021-08-07T17:30:00 Z SamAnd Colouring a rectangle (eJOI19_colouring) C++17
100 / 100
 941 ms 46912 KB 
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rnf(2106);
const int N = 400005;
const ll INF = 1000000009000000009;

ll minu[N * 4];
ll laz[N * 4];

void clr(int tl, int tr, int pos)
{
    minu[pos] = laz[pos] = 0;
    if (tl == tr)
        return;
    int m = (tl + tr) / 2;
    clr(tl, m, pos * 2);
    clr(m + 1, tr, pos * 2 + 1);
}

void shi(int pos)
{
    if (laz[pos] == 0)
        return;
    minu[pos * 2] += laz[pos];
    laz[pos * 2] += laz[pos];
    minu[pos * 2 + 1] += laz[pos];
    laz[pos * 2 + 1] += laz[pos];
    laz[pos] = 0;
}

void ubd(int tl, int tr, int l, int r, ll y, int pos)
{
    if (l > r)
        return;
    if (tl == l && tr == r)
    {
        minu[pos] += y;
        laz[pos] += y;
        return;
    }
    shi(pos);
    int m = (tl + tr) / 2;
    ubd(tl, m, l, min(m, r), y, pos * 2);
    ubd(m + 1, tr, max(m + 1, l), r, y, pos * 2 + 1);
    minu[pos] = min(minu[pos * 2], minu[pos * 2 + 1]);
}

ll qry(int tl, int tr, int l, int r, int pos)
{
    if (l > r)
        return INF;
    if (tl == l && tr == r)
        return minu[pos];
    shi(pos);
    int m = (tl + tr) / 2;
    return min(qry(tl, m, l, min(m, r), pos * 2),
               qry(m + 1, tr, max(m + 1, l), r, pos * 2 + 1));
}

vector<int> v[N];
ll dp[N];

ll solvv(vector<int> a, vector<pair<pair<int, int>, int> > b)
{
    int n = sz(a) - 1;
    for (int i = 0; i <= n + 1; ++i)
    {
        v[i].clear();
        dp[i] = 0;
    }
    clr(0, n, 1);

    for (int i = 1; i < sz(b); ++i)
    {
        v[b[i].fi.fi].push_back(i);
        v[b[i].fi.se + 1].push_back(-i);
    }

    ll s = 0;
    for (int i = 1; i <= n + 1; ++i)
    {
        for (int j = 0; j < v[i].size(); ++j)
        {
            if (v[i][j] > 0)
            {
                ubd(0, n, b[v[i][j]].fi.fi, b[v[i][j]].fi.se, -b[v[i][j]].se, 1);
                s += b[v[i][j]].se;
            }
            else
            {
                ubd(0, n, b[-v[i][j]].fi.fi, b[-v[i][j]].fi.se, b[-v[i][j]].se, 1);
                s -= b[-v[i][j]].se;
            }
        }
        if (i == n + 1)
            break;
        dp[i] = s + qry(0, n, 0, i - 1, 1);
        ubd(0, n, 0, i - 1, a[i], 1);
        ubd(0, n, i, i, dp[i], 1);
    }

    return minu[1];
}

void solv()
{
    int n, m;
    int* a, *b;

    int* l, *r;

    cin >> n >> m;

    a = new int[n + m + 5];
    b = new int[n + m + 5];
    l = new int[n + m + 5];
    r = new int[n + m + 5];

    for (int i = 1; i <= n + m - 1; ++i)
        cin >> a[i];
    for (int i = 1; i <= n + m - 1; ++i)
        cin >> b[i];

    for (int i = 1; i <= n + m - 1; ++i)
    {
        int x, y;
        if (i <= m)
        {
            x = 1;
            y = (m - i + 1);
        }
        else
        {
            x = (i - m + 1);
            y = 1;
        }

        int q = min(n - x + 1, m - y + 1);

        int u = min(x - 1, m - y);

        int xx = x - u;
        int yy = y + u;

        int L, R;

        if (xx == 1)
        {
            L = yy;
        }
        else
        {
            L = m + xx - 1;
        }

        R = L + q * 2 - 1 - 1;

        //cout << i << ' ' << L << ' ' << R << "\n";
        l[i] = L;
        r[i] = R;
    }

    ll ans = 0;

    vector<int> v;
    v.push_back(-1);
    for (int i = 1; i <= n + m - 1; ++i)
    {
        if (i % 2 == l[1] % 2)
        {
            v.push_back(b[i]);
        }
    }
    vector<pair<pair<int, int>, int> > vv;
    vv.push_back(m_p(m_p(-1, -1), -1));
    for (int i = 1; i <= n + m - 1; i += 2)
    {
        vv.push_back(m_p(m_p(l[i] / 2 + l[i] % 2, r[i] / 2 + r[i] % 2), a[i]));
    }

    ans += solvv(v, vv);

    v.clear();
    v.push_back(-1);
    for (int i = 1; i <= n + m - 1; ++i)
    {
        if (i % 2 == l[2] % 2)
        {
            v.push_back(b[i]);
        }
    }
    vv.clear();
    vv.push_back(m_p(m_p(-1, -1), -1));
    for (int i = 2; i <= n + m - 1; i += 2)
    {
        vv.push_back(m_p(m_p(l[i] / 2 + l[i] % 2, r[i] / 2 + r[i] % 2), a[i]));
    }

    ans += solvv(v, vv);

    cout << ans << "\n";
}

int main()
{
    #ifdef SOMETHING
    freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #endif // SOMETHING
    ios_base::sync_with_stdio(false), cin.tie(0);

    int tt = 1;
    //cin >> tt;
    while (tt--)
    {
        solv();
    }
    return 0;
}

Compilation message

colouring.cpp: In function 'll solvv(std::vector<int>, std::vector<std::pair<std::pair<int, int>, int> >)':
colouring.cpp:89:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |         for (int j = 0; j < v[i].size(); ++j)
      |                         ~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9704 KB Output is correct
3 Correct 6 ms 9744 KB Output is correct
4 Correct 7 ms 9724 KB Output is correct
5 Correct 7 ms 9736 KB Output is correct
6 Correct 7 ms 9732 KB Output is correct
7 Correct 7 ms 9676 KB Output is correct
8 Correct 6 ms 9676 KB Output is correct
9 Correct 6 ms 9660 KB Output is correct
10 Correct 7 ms 9676 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9704 KB Output is correct
3 Correct 6 ms 9744 KB Output is correct
4 Correct 7 ms 9724 KB Output is correct
5 Correct 7 ms 9736 KB Output is correct
6 Correct 7 ms 9732 KB Output is correct
7 Correct 7 ms 9676 KB Output is correct
8 Correct 6 ms 9676 KB Output is correct
9 Correct 6 ms 9660 KB Output is correct
10 Correct 7 ms 9676 KB Output is correct
11 Correct 6 ms 9676 KB Output is correct
12 Correct 6 ms 9652 KB Output is correct
13 Correct 7 ms 9732 KB Output is correct
14 Correct 7 ms 9724 KB Output is correct
15 Correct 6 ms 9676 KB Output is correct
16 Correct 6 ms 9676 KB Output is correct
17 Correct 6 ms 9676 KB Output is correct
18 Correct 6 ms 9804 KB Output is correct
19 Correct 7 ms 9676 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9704 KB Output is correct
3 Correct 6 ms 9744 KB Output is correct
4 Correct 7 ms 9724 KB Output is correct
5 Correct 7 ms 9736 KB Output is correct
6 Correct 7 ms 9732 KB Output is correct
7 Correct 7 ms 9676 KB Output is correct
8 Correct 6 ms 9676 KB Output is correct
9 Correct 6 ms 9660 KB Output is correct
10 Correct 7 ms 9676 KB Output is correct
11 Correct 6 ms 9676 KB Output is correct
12 Correct 6 ms 9652 KB Output is correct
13 Correct 7 ms 9732 KB Output is correct
14 Correct 7 ms 9724 KB Output is correct
15 Correct 6 ms 9676 KB Output is correct
16 Correct 6 ms 9676 KB Output is correct
17 Correct 6 ms 9676 KB Output is correct
18 Correct 6 ms 9804 KB Output is correct
19 Correct 7 ms 9676 KB Output is correct
20 Correct 6 ms 9676 KB Output is correct
21 Correct 6 ms 9676 KB Output is correct
22 Correct 6 ms 9676 KB Output is correct
23 Correct 7 ms 9676 KB Output is correct
24 Correct 6 ms 9740 KB Output is correct
25 Correct 7 ms 9676 KB Output is correct
26 Correct 7 ms 9676 KB Output is correct
27 Correct 6 ms 9676 KB Output is correct
28 Correct 6 ms 9676 KB Output is correct
29 Correct 8 ms 9676 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9704 KB Output is correct
3 Correct 6 ms 9744 KB Output is correct
4 Correct 7 ms 9724 KB Output is correct
5 Correct 7 ms 9736 KB Output is correct
6 Correct 7 ms 9732 KB Output is correct
7 Correct 7 ms 9676 KB Output is correct
8 Correct 6 ms 9676 KB Output is correct
9 Correct 6 ms 9660 KB Output is correct
10 Correct 7 ms 9676 KB Output is correct
11 Correct 6 ms 9676 KB Output is correct
12 Correct 6 ms 9652 KB Output is correct
13 Correct 7 ms 9732 KB Output is correct
14 Correct 7 ms 9724 KB Output is correct
15 Correct 6 ms 9676 KB Output is correct
16 Correct 6 ms 9676 KB Output is correct
17 Correct 6 ms 9676 KB Output is correct
18 Correct 6 ms 9804 KB Output is correct
19 Correct 7 ms 9676 KB Output is correct
20 Correct 6 ms 9676 KB Output is correct
21 Correct 6 ms 9676 KB Output is correct
22 Correct 6 ms 9676 KB Output is correct
23 Correct 7 ms 9676 KB Output is correct
24 Correct 6 ms 9740 KB Output is correct
25 Correct 7 ms 9676 KB Output is correct
26 Correct 7 ms 9676 KB Output is correct
27 Correct 6 ms 9676 KB Output is correct
28 Correct 6 ms 9676 KB Output is correct
29 Correct 8 ms 9676 KB Output is correct
30 Correct 12 ms 10092 KB Output is correct
31 Correct 12 ms 10060 KB Output is correct
32 Correct 12 ms 10060 KB Output is correct
33 Correct 11 ms 9932 KB Output is correct
34 Correct 11 ms 9940 KB Output is correct
35 Correct 9 ms 9832 KB Output is correct
36 Correct 10 ms 9904 KB Output is correct
37 Correct 9 ms 9804 KB Output is correct
38 Correct 9 ms 9872 KB Output is correct
39 Correct 9 ms 9836 KB Output is correct
40 Correct 10 ms 9928 KB Output is correct
41 Correct 9 ms 9932 KB Output is correct
42 Correct 9 ms 9872 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 319 ms 27928 KB Output is correct
2 Correct 329 ms 27900 KB Output is correct
3 Correct 328 ms 27948 KB Output is correct
4 Correct 334 ms 28148 KB Output is correct
5 Correct 351 ms 28348 KB Output is correct
6 Correct 327 ms 27352 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 926 ms 46912 KB Output is correct
2 Correct 893 ms 46060 KB Output is correct
3 Correct 900 ms 46060 KB Output is correct
4 Correct 941 ms 46348 KB Output is correct
5 Correct 908 ms 46344 KB Output is correct
6 Correct 898 ms 43408 KB Output is correct
7 Correct 907 ms 45952 KB Output is correct

Subtask #7
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9704 KB Output is correct
3 Correct 6 ms 9744 KB Output is correct
4 Correct 7 ms 9724 KB Output is correct
5 Correct 7 ms 9736 KB Output is correct
6 Correct 7 ms 9732 KB Output is correct
7 Correct 7 ms 9676 KB Output is correct
8 Correct 6 ms 9676 KB Output is correct
9 Correct 6 ms 9660 KB Output is correct
10 Correct 7 ms 9676 KB Output is correct
11 Correct 6 ms 9676 KB Output is correct
12 Correct 6 ms 9652 KB Output is correct
13 Correct 7 ms 9732 KB Output is correct
14 Correct 7 ms 9724 KB Output is correct
15 Correct 6 ms 9676 KB Output is correct
16 Correct 6 ms 9676 KB Output is correct
17 Correct 6 ms 9676 KB Output is correct
18 Correct 6 ms 9804 KB Output is correct
19 Correct 7 ms 9676 KB Output is correct
20 Correct 6 ms 9676 KB Output is correct
21 Correct 6 ms 9676 KB Output is correct
22 Correct 6 ms 9676 KB Output is correct
23 Correct 7 ms 9676 KB Output is correct
24 Correct 6 ms 9740 KB Output is correct
25 Correct 7 ms 9676 KB Output is correct
26 Correct 7 ms 9676 KB Output is correct
27 Correct 6 ms 9676 KB Output is correct
28 Correct 6 ms 9676 KB Output is correct
29 Correct 8 ms 9676 KB Output is correct
30 Correct 12 ms 10092 KB Output is correct
31 Correct 12 ms 10060 KB Output is correct
32 Correct 12 ms 10060 KB Output is correct
33 Correct 11 ms 9932 KB Output is correct
34 Correct 11 ms 9940 KB Output is correct
35 Correct 9 ms 9832 KB Output is correct
36 Correct 10 ms 9904 KB Output is correct
37 Correct 9 ms 9804 KB Output is correct
38 Correct 9 ms 9872 KB Output is correct
39 Correct 9 ms 9836 KB Output is correct
40 Correct 10 ms 9928 KB Output is correct
41 Correct 9 ms 9932 KB Output is correct
42 Correct 9 ms 9872 KB Output is correct
43 Correct 319 ms 27928 KB Output is correct
44 Correct 329 ms 27900 KB Output is correct
45 Correct 328 ms 27948 KB Output is correct
46 Correct 334 ms 28148 KB Output is correct
47 Correct 351 ms 28348 KB Output is correct
48 Correct 327 ms 27352 KB Output is correct
49 Correct 926 ms 46912 KB Output is correct
50 Correct 893 ms 46060 KB Output is correct
51 Correct 900 ms 46060 KB Output is correct
52 Correct 941 ms 46348 KB Output is correct
53 Correct 908 ms 46344 KB Output is correct
54 Correct 898 ms 43408 KB Output is correct
55 Correct 907 ms 45952 KB Output is correct
56 Correct 326 ms 27380 KB Output is correct
57 Correct 342 ms 27548 KB Output is correct
58 Correct 331 ms 27916 KB Output is correct
59 Correct 332 ms 26584 KB Output is correct
60 Correct 348 ms 27960 KB Output is correct
61 Correct 349 ms 27832 KB Output is correct
62 Correct 365 ms 26628 KB Output is correct
63 Correct 401 ms 27920 KB Output is correct
64 Correct 397 ms 28004 KB Output is correct
65 Correct 452 ms 28652 KB Output is correct
66 Correct 504 ms 30140 KB Output is correct
67 Correct 581 ms 31932 KB Output is correct
68 Correct 882 ms 43528 KB Output is correct
69 Correct 898 ms 45112 KB Output is correct
70 Correct 707 ms 39104 KB Output is correct