oj.uz

답안 #864613

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
864613 2023-10-23T10:33:40 Z danikoynov 새 집 (APIO18_new_home) C++14
47 / 100
 5000 ms 594408 KB 
#include<bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

const int maxn = 6e5 + 10, inf = 1e9;

struct store
{
    int x, t, a, b;
}s[maxn];

struct query
{
    int l, y, idx;
}task[maxn];

int n, k, q;

void input()
{
    cin >> n >> k >> q;
    for (int i = 1; i <= n; i ++)
        cin >> s[i].x >> s[i].t >> s[i].a >> s[i].b;

    for (int i = 1; i <= q; i ++)
        cin >> task[i].l >> task[i].y, task[i].idx = i;
}

unordered_map < int, int > rev;
int dif, back_to[2 * maxn];

int get_mid(int left, int right)
{
    if (left == right)
        return rev[left];
    
    int lf = rev[left], rf = rev[right];
    while(lf <= rf)
    {
        int mf = (lf + rf) / 2;
        if (abs(left - back_to[mf]) <= abs(right - back_to[mf]))
            lf = mf + 1;
        else
            rf = mf - 1;
    }

    return rf;
}
void compress_data()
{
    vector < int > cor;
    for (int i = 1; i <= n; i ++)
        cor.push_back(s[i].x);
    for (int i = 1; i <= q; i ++)
        cor.push_back(task[i].l);

    sort(cor.begin(), cor.end());
    int sz = cor.size();

    for (int i = 0; i < cor.size(); i ++)
    {
        if (i != 0 || cor[i - 1] != cor[i])
        {
            dif ++;
            rev[cor[i]] = dif;
            back_to[dif] = cor[i];
        }
    }
}
int type[maxn];
int solve_naive(int pivot, int year)
{
    for (int i = 1; i <= k; i ++)
        type[i] = inf;

    for (int i = 1; i <= n; i ++)
    {
        if (s[i].a <= year && s[i].b >= year)
            type[s[i].t] = min(type[s[i].t], abs(pivot - s[i].x));
    }

    int ans = -1;
    for (int i = 1; i <= k; i ++)
    {
        if (type[i] == inf)
            return -1;
        ans = max(ans, type[i]);
    }

    return ans;
}

bool cmp_query(query t1, query t2)
{
    return t1.y < t2.y;
}

struct event
{
    int type, cor, add, arrive;

    event(int _type, int _cor, int _add, int _arrive)
    {
        type = _type;
        cor = _cor;
        add = _add;
        arrive = _arrive;
    }
};

bool cmp_event(event e1, event e2)
{
    if (e1.arrive != e2.arrive)
        return e1.arrive < e2.arrive;

    if (e1.add != e2.add)
        return e1.add < e2.add;

    return e1.cor < e2.cor; /// could have dublicates
}




multiset < int > tree[4 * maxn];

void apply_update(int root, pair < int, int > val)
{
    if (val.first == -1)
    {
        tree[root].erase(tree[root].find(val.second));
    }
    else
    {
        tree[root].insert(val.second);
    }
}

void update(int root, int left, int right, int qleft, int qright, pair < int, int > val)
{
    if (left > qright || right < qleft)
        return;

    if (left >= qleft && right <= qright)
    {
        apply_update(root, val);
        return;
    }

    int mid = (left + right) / 2;

    update(root * 2, left, mid, qleft, qright, val);
    update(root * 2 + 1, mid + 1, right, qleft, qright, val);
}

int query(int root, int left, int right, int pos, int cor)
{   
   
    int far = 0;
    if (!tree[root].empty())
    {
        far = max(far, abs(cor - *tree[root].begin()));
        far = max(far, abs(cor - *tree[root].rbegin()));
    }
    
    if (left != right)
    {
        int mid = (left + right) / 2;
        if (pos <= mid)
            far = max(far, query(root * 2, left, mid, pos, cor));
        else
            far = max(far, query(root * 2 + 1, mid + 1, right, pos, cor));
    }
        ///cout << root << " " << left << " " << right << " " << pos << " " << cor << endl;
        ///cout << far << " : " << cor<< endl; 

    return far;
}

multiset < int > act[maxn];

void add_event(int type, int cor)
{
    multiset < int > :: iterator it = act[type].upper_bound(cor);
    int aft = *it;
    int bef = *prev(it);

    if (bef == -inf && aft == inf)
    {
        update(1, 1, dif, 1, dif, {-1, -inf});
        update(1, 1, dif, 1, rev[cor], {1, cor});
        update(1, 1, dif, rev[cor], dif, {1, cor});
        ///cout << "from to " << rev[cor] << endl;
    }
    else
    if (bef == - inf) // aft != inf
    {
        update(1, 1, dif, 1, rev[aft], {-1, aft});
        update(1, 1, dif, 1, rev[cor], {1, cor});
        int mid = get_mid(cor, aft);
        update(1, 1, dif, rev[cor], mid, {1, cor});
        update(1, 1, dif, mid + 1, rev[aft], {1, aft});
    }
    else
    if (aft == inf) // bef != inf
    {
        update(1, 1, dif, rev[bef], dif, {-1, bef});
        update(1, 1, dif, rev[cor], dif, {1, cor});
        int mid = get_mid(bef, cor);
        ///cout << "here " << mid << endl;
        update(1, 1, dif, rev[bef], mid, {1, bef});
        update(1, 1, dif, mid + 1, rev[cor], {1, cor});
    }
    else   /// aft != inf && bef != inf
    {
        int mid = get_mid(bef, aft);
        update(1, 1, dif, rev[bef], mid, {-1, bef});
        update(1, 1, dif, mid + 1, rev[aft], {-1, aft});
        int mid_left = get_mid(bef, cor);
        update(1, 1, dif, rev[bef], mid_left, {1, bef});
        update(1, 1, dif, mid_left + 1, rev[cor], {1, cor});
        int mid_right = get_mid(cor, aft);
        update(1, 1, dif, rev[cor], mid_right, {1, cor});
        update(1, 1, dif, mid_right + 1, rev[aft], {1, aft});
    }

    act[type].insert(cor);
}

void remove_event(int type, int cor)
{
    multiset < int > :: iterator it = act[type].find(cor);
    int aft = *next(it);
    int bef = *prev(it);

    if (bef == -inf && aft == inf)
    {
        update(1, 1, dif, 1, dif, {+1, -inf});
        update(1, 1, dif, 1, rev[cor], {-1, cor});
        update(1, 1, dif, rev[cor], dif, {-1, cor});
    }
    else
    if (bef == - inf) // aft != inf
    {
        update(1, 1, dif, 1, rev[aft], {1, aft});
        update(1, 1, dif, 1, rev[cor], {-1, cor});
        int mid = get_mid(cor, aft);
        update(1, 1, dif, rev[cor], mid, {-1, cor});
        update(1, 1, dif, mid + 1, rev[aft], {-1, aft});
    }
    else
    if (aft == inf) // bef != inf
    {
        update(1, 1, dif, rev[bef], dif, {1, bef});
        update(1, 1, dif, rev[cor], dif, {-1, cor});
        int mid = get_mid(bef, cor);
        update(1, 1, dif, rev[bef], mid, {-1, bef});
        update(1, 1, dif, mid + 1, rev[cor], {-1, cor});
    }
    else   /// aft != inf && bef != inf
    {
        int mid = get_mid(bef, aft);
        update(1, 1, dif, rev[bef], mid, {1, bef});
        update(1, 1, dif, mid + 1, rev[aft], {1, aft});
        int mid_left = get_mid(bef, cor);
        update(1, 1, dif, rev[bef], mid_left, {-1, bef});
        update(1, 1, dif, mid_left + 1, rev[cor], {-1, cor});
        int mid_right = get_mid(cor, aft);
        update(1, 1, dif, rev[cor], mid_right, {-1, cor});
        update(1, 1, dif, mid_right + 1, rev[aft], {-1, aft});
    }

    act[type].erase(it);
}

int ans[maxn];

int single_query(int cor)
{
    /**int far = 0;
    for (int i = 1; i <= k; i ++)
    {
        multiset < int > :: iterator it = act[i].upper_bound(cor);
        int closest = inf;
        ///if (it != act[i].end())
        ///cout << "here " << cor << " " << *it << endl;
        if (it != act[i].end())
            closest = min(closest, *it - cor);
        
        if (it != act[i].begin())
            closest = min(closest, cor - *prev(it));
        
        far = max(far, closest);
        ///cout << far << endl;
    }*/

    int far = query(1, 1, dif, rev[cor], cor);

    if (far > 2e8)
        return -1;

    return far;
}

void answer_queries()
{
    sort(task + 1, task + q + 1, cmp_query);
    
    vector < event > events;
    for (int i = 1; i <= n; i ++)
    {
        events.push_back(event(s[i].t, s[i].x, 1, s[i].a));
        events.push_back(event(s[i].t, s[i].x, -1, s[i].b + 1));
    }

    sort(events.begin(), events.end(), cmp_event);

    for (int i = 1; i <= k; i ++)
    {
        act[i].insert(-inf);
        act[i].insert(inf);
        update(1, 1, dif, 1, dif, {1, -inf});
    }

    int pt = 1;
    for (event cur : events)
    {
        
        while(pt <= q && task[pt].y < cur.arrive)
        {
            ans[task[pt].idx] = single_query(task[pt].l);
            pt ++;
        }
        ///cout << "event " << cur.arrive << " " << cur.add << " " << cur.cor << endl;
        if (cur.add == 1)
            add_event(cur.type, cur.cor);
        else
            remove_event(cur.type, cur.cor);
    }

    while(pt <= q)
    {
         ans[task[pt].idx] = single_query(task[pt].l);
         pt ++;
    }

    for (int i = 1; i <= q; i ++)
        cout << ans[i] << endl;
}
void solve()
{
    input();
    compress_data();
    answer_queries();
}

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int main()
{
    speed();
    solve();
    return 0;
}

/**
2 1 2
3 1 1 3
5 1 3 4
3 3
3 4




4 2 4
3 1 1 10
9 2 2 4
7 2 5 7
4 1 8 10
5 3
5 6
5 9
1 10

2 1 3
1 1 1 4
1 1 2 6
1 3
1 5
1 7

1 1 1
100000000 1 1 1
1 1



*/

Compilation message

new_home.cpp: In function 'void compress_data()':
new_home.cpp:62:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |     for (int i = 0; i < cor.size(); i ++)
      |                     ~~^~~~~~~~~~~~
new_home.cpp:60:9: warning: unused variable 'sz' [-Wunused-variable]
   60 |     int sz = cor.size();
      |         ^~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 148060 KB Output is correct
2 Correct 28 ms 148208 KB Output is correct
3 Correct 28 ms 148060 KB Output is correct
4 Correct 28 ms 148060 KB Output is correct
5 Correct 29 ms 148060 KB Output is correct
6 Correct 30 ms 148316 KB Output is correct
7 Correct 29 ms 148316 KB Output is correct
8 Correct 30 ms 148412 KB Output is correct
9 Correct 29 ms 148568 KB Output is correct
10 Correct 30 ms 148352 KB Output is correct
11 Correct 29 ms 148056 KB Output is correct
12 Correct 29 ms 148272 KB Output is correct
13 Correct 28 ms 148124 KB Output is correct
14 Correct 29 ms 148060 KB Output is correct
15 Correct 30 ms 148316 KB Output is correct
16 Correct 29 ms 148260 KB Output is correct
17 Correct 30 ms 148060 KB Output is correct
18 Correct 29 ms 148292 KB Output is correct
19 Correct 33 ms 148744 KB Output is correct
20 Correct 30 ms 148060 KB Output is correct
21 Correct 27 ms 148316 KB Output is correct
22 Correct 30 ms 148316 KB Output is correct
23 Correct 31 ms 148312 KB Output is correct
24 Correct 30 ms 148312 KB Output is correct
25 Correct 29 ms 148316 KB Output is correct
26 Correct 29 ms 148120 KB Output is correct
27 Correct 30 ms 148260 KB Output is correct
28 Correct 30 ms 148056 KB Output is correct
29 Correct 29 ms 148060 KB Output is correct
30 Correct 29 ms 148060 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 148060 KB Output is correct
2 Correct 28 ms 148208 KB Output is correct
3 Correct 28 ms 148060 KB Output is correct
4 Correct 28 ms 148060 KB Output is correct
5 Correct 29 ms 148060 KB Output is correct
6 Correct 30 ms 148316 KB Output is correct
7 Correct 29 ms 148316 KB Output is correct
8 Correct 30 ms 148412 KB Output is correct
9 Correct 29 ms 148568 KB Output is correct
10 Correct 30 ms 148352 KB Output is correct
11 Correct 29 ms 148056 KB Output is correct
12 Correct 29 ms 148272 KB Output is correct
13 Correct 28 ms 148124 KB Output is correct
14 Correct 29 ms 148060 KB Output is correct
15 Correct 30 ms 148316 KB Output is correct
16 Correct 29 ms 148260 KB Output is correct
17 Correct 30 ms 148060 KB Output is correct
18 Correct 29 ms 148292 KB Output is correct
19 Correct 33 ms 148744 KB Output is correct
20 Correct 30 ms 148060 KB Output is correct
21 Correct 27 ms 148316 KB Output is correct
22 Correct 30 ms 148316 KB Output is correct
23 Correct 31 ms 148312 KB Output is correct
24 Correct 30 ms 148312 KB Output is correct
25 Correct 29 ms 148316 KB Output is correct
26 Correct 29 ms 148120 KB Output is correct
27 Correct 30 ms 148260 KB Output is correct
28 Correct 30 ms 148056 KB Output is correct
29 Correct 29 ms 148060 KB Output is correct
30 Correct 29 ms 148060 KB Output is correct
31 Correct 2066 ms 208492 KB Output is correct
32 Correct 230 ms 158772 KB Output is correct
33 Correct 720 ms 171512 KB Output is correct
34 Correct 1754 ms 181812 KB Output is correct
35 Correct 1598 ms 200124 KB Output is correct
36 Correct 785 ms 182368 KB Output is correct
37 Correct 512 ms 164092 KB Output is correct
38 Correct 362 ms 163080 KB Output is correct
39 Correct 341 ms 162664 KB Output is correct
40 Correct 329 ms 162780 KB Output is correct
41 Correct 588 ms 162864 KB Output is correct
42 Correct 632 ms 162728 KB Output is correct
43 Correct 118 ms 162596 KB Output is correct
44 Correct 561 ms 162828 KB Output is correct
45 Correct 503 ms 163228 KB Output is correct
46 Correct 393 ms 163092 KB Output is correct
47 Correct 267 ms 162580 KB Output is correct
48 Correct 255 ms 162580 KB Output is correct
49 Correct 339 ms 162772 KB Output is correct
50 Correct 466 ms 162732 KB Output is correct
51 Correct 328 ms 162636 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 5089 ms 594408 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 5044 ms 537644 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 148060 KB Output is correct
2 Correct 28 ms 148208 KB Output is correct
3 Correct 28 ms 148060 KB Output is correct
4 Correct 28 ms 148060 KB Output is correct
5 Correct 29 ms 148060 KB Output is correct
6 Correct 30 ms 148316 KB Output is correct
7 Correct 29 ms 148316 KB Output is correct
8 Correct 30 ms 148412 KB Output is correct
9 Correct 29 ms 148568 KB Output is correct
10 Correct 30 ms 148352 KB Output is correct
11 Correct 29 ms 148056 KB Output is correct
12 Correct 29 ms 148272 KB Output is correct
13 Correct 28 ms 148124 KB Output is correct
14 Correct 29 ms 148060 KB Output is correct
15 Correct 30 ms 148316 KB Output is correct
16 Correct 29 ms 148260 KB Output is correct
17 Correct 30 ms 148060 KB Output is correct
18 Correct 29 ms 148292 KB Output is correct
19 Correct 33 ms 148744 KB Output is correct
20 Correct 30 ms 148060 KB Output is correct
21 Correct 27 ms 148316 KB Output is correct
22 Correct 30 ms 148316 KB Output is correct
23 Correct 31 ms 148312 KB Output is correct
24 Correct 30 ms 148312 KB Output is correct
25 Correct 29 ms 148316 KB Output is correct
26 Correct 29 ms 148120 KB Output is correct
27 Correct 30 ms 148260 KB Output is correct
28 Correct 30 ms 148056 KB Output is correct
29 Correct 29 ms 148060 KB Output is correct
30 Correct 29 ms 148060 KB Output is correct
31 Correct 2066 ms 208492 KB Output is correct
32 Correct 230 ms 158772 KB Output is correct
33 Correct 720 ms 171512 KB Output is correct
34 Correct 1754 ms 181812 KB Output is correct
35 Correct 1598 ms 200124 KB Output is correct
36 Correct 785 ms 182368 KB Output is correct
37 Correct 512 ms 164092 KB Output is correct
38 Correct 362 ms 163080 KB Output is correct
39 Correct 341 ms 162664 KB Output is correct
40 Correct 329 ms 162780 KB Output is correct
41 Correct 588 ms 162864 KB Output is correct
42 Correct 632 ms 162728 KB Output is correct
43 Correct 118 ms 162596 KB Output is correct
44 Correct 561 ms 162828 KB Output is correct
45 Correct 503 ms 163228 KB Output is correct
46 Correct 393 ms 163092 KB Output is correct
47 Correct 267 ms 162580 KB Output is correct
48 Correct 255 ms 162580 KB Output is correct
49 Correct 339 ms 162772 KB Output is correct
50 Correct 466 ms 162732 KB Output is correct
51 Correct 328 ms 162636 KB Output is correct
52 Correct 765 ms 217700 KB Output is correct
53 Correct 670 ms 187748 KB Output is correct
54 Correct 1951 ms 229384 KB Output is correct
55 Correct 771 ms 181132 KB Output is correct
56 Correct 775 ms 190476 KB Output is correct
57 Correct 761 ms 168160 KB Output is correct
58 Correct 894 ms 181148 KB Output is correct
59 Correct 834 ms 190396 KB Output is correct
60 Correct 759 ms 168200 KB Output is correct
61 Correct 141 ms 170856 KB Output is correct
62 Correct 738 ms 217984 KB Output is correct
63 Correct 1497 ms 215576 KB Output is correct
64 Correct 1728 ms 206088 KB Output is correct
65 Correct 1455 ms 176936 KB Output is correct
66 Correct 681 ms 163396 KB Output is correct
67 Correct 1568 ms 171824 KB Output is correct

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 148060 KB Output is correct
2 Correct 28 ms 148208 KB Output is correct
3 Correct 28 ms 148060 KB Output is correct
4 Correct 28 ms 148060 KB Output is correct
5 Correct 29 ms 148060 KB Output is correct
6 Correct 30 ms 148316 KB Output is correct
7 Correct 29 ms 148316 KB Output is correct
8 Correct 30 ms 148412 KB Output is correct
9 Correct 29 ms 148568 KB Output is correct
10 Correct 30 ms 148352 KB Output is correct
11 Correct 29 ms 148056 KB Output is correct
12 Correct 29 ms 148272 KB Output is correct
13 Correct 28 ms 148124 KB Output is correct
14 Correct 29 ms 148060 KB Output is correct
15 Correct 30 ms 148316 KB Output is correct
16 Correct 29 ms 148260 KB Output is correct
17 Correct 30 ms 148060 KB Output is correct
18 Correct 29 ms 148292 KB Output is correct
19 Correct 33 ms 148744 KB Output is correct
20 Correct 30 ms 148060 KB Output is correct
21 Correct 27 ms 148316 KB Output is correct
22 Correct 30 ms 148316 KB Output is correct
23 Correct 31 ms 148312 KB Output is correct
24 Correct 30 ms 148312 KB Output is correct
25 Correct 29 ms 148316 KB Output is correct
26 Correct 29 ms 148120 KB Output is correct
27 Correct 30 ms 148260 KB Output is correct
28 Correct 30 ms 148056 KB Output is correct
29 Correct 29 ms 148060 KB Output is correct
30 Correct 29 ms 148060 KB Output is correct
31 Correct 2066 ms 208492 KB Output is correct
32 Correct 230 ms 158772 KB Output is correct
33 Correct 720 ms 171512 KB Output is correct
34 Correct 1754 ms 181812 KB Output is correct
35 Correct 1598 ms 200124 KB Output is correct
36 Correct 785 ms 182368 KB Output is correct
37 Correct 512 ms 164092 KB Output is correct
38 Correct 362 ms 163080 KB Output is correct
39 Correct 341 ms 162664 KB Output is correct
40 Correct 329 ms 162780 KB Output is correct
41 Correct 588 ms 162864 KB Output is correct
42 Correct 632 ms 162728 KB Output is correct
43 Correct 118 ms 162596 KB Output is correct
44 Correct 561 ms 162828 KB Output is correct
45 Correct 503 ms 163228 KB Output is correct
46 Correct 393 ms 163092 KB Output is correct
47 Correct 267 ms 162580 KB Output is correct
48 Correct 255 ms 162580 KB Output is correct
49 Correct 339 ms 162772 KB Output is correct
50 Correct 466 ms 162732 KB Output is correct
51 Correct 328 ms 162636 KB Output is correct
52 Execution timed out 5089 ms 594408 KB Time limit exceeded
53 Halted 0 ms 0 KB -