oj.uz

답안 #975596

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
975596 2024-05-05T14:18:16 Z rembocoder Measures (CEOI22_measures) C++17
24 / 100
 194 ms 24252 KB 
#include <bits/stdc++.h>

using namespace std;

#define int int64_t

const int inf = 2e18;

//const int mod = 1e9 + 7;

vector<int> dsu_p, dsu_sz;
vector<int> min_x, max_x;
vector<int> seg_l, seg_r;
set<pair<pair<int, int>, int>> segs;
int d;
int ans = 0;

int get_root(int v) {
    if (dsu_p[v] == -1) {
        return v;
    }
    return dsu_p[v] = get_root(dsu_p[v]);
}

void unite(int a, int b);

void check_seg(int v) {
    v = get_root(v);
    auto it = segs.find({{seg_l[v], seg_r[v]}, v});
    vector<int> to_unite;
    it++;
    if (it != segs.end()) {
        if (it->first.first - seg_r[v] <= d) {
            to_unite.push_back(it->second);
        }
    }
    it--;
    if (it != segs.begin()) {
        it--;
        if (seg_l[v] - it->first.second <= d) {
            to_unite.push_back(it->second);
        }
        it++;
    }
    for (int u: to_unite) {
        unite(v, u);
    }
}

void unite(int a, int b) {
    a = get_root(a);
    b = get_root(b);
    if (a == b) {
        return;
    }
    if (dsu_sz[a] > dsu_sz[b]) {
        swap(a, b);
    }
    segs.erase({{seg_l[a], seg_r[a]}, a});
    segs.erase({{seg_l[b], seg_r[b]}, b});
    dsu_p[a] = b;
    dsu_sz[b] += dsu_sz[a];
    min_x[b] = min(min_x[b], min_x[a]);
    max_x[b] = max(max_x[b], max_x[a]);
    int mid = (min_x[b] + max_x[b]) / 2;
    int half_len = (dsu_sz[b] - 1) * d / 2;
    seg_l[b] = mid - half_len;
    seg_r[b] = mid + half_len;
    segs.insert({{seg_l[b], seg_r[b]}, b});
    ans = max(ans, min_x[b] - seg_l[b]);
    ans = max(ans, seg_r[b] - max_x[b]);
    check_seg(b);
}

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int n, m;
    cin >> n >> m >> d;
    d *= 2;
    dsu_p.resize(n + m, -1);
    dsu_sz.resize(n + m, 1);
    min_x.resize(n + m);
    max_x.resize(n + m);
    seg_l.resize(n + m);
    seg_r.resize(n + m);
    vector<int> x(n + m);
    for (int i = 0; i < n + m; i++) {
        cin >> x[i];
        x[i] *= 2;
        min_x[i] = max_x[i] = x[i];
        seg_l[i] = seg_r[i] = x[i];
    }
    for (int i = 0; i < n + m; i++) {
        segs.insert({{seg_l[i], seg_r[i]}, i});
        check_seg(i);
        if (i >= n) {
            cout << ans / 2;
            if (ans % 2) {
                cout << ".5";
            }
            cout << ' ';
        }
    }
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 604 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 1 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 604 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 118 ms 23728 KB Output is correct
10 Correct 48 ms 11416 KB Output is correct
11 Correct 45 ms 11356 KB Output is correct
12 Correct 44 ms 11416 KB Output is correct
13 Correct 42 ms 11352 KB Output is correct
14 Correct 81 ms 21328 KB Output is correct
15 Correct 194 ms 14400 KB Output is correct
16 Correct 44 ms 11356 KB Output is correct

Subtask #3
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 134 ms 21644 KB Output is correct
2 Correct 66 ms 14216 KB Output is correct
3 Correct 69 ms 14184 KB Output is correct
4 Correct 127 ms 24252 KB Output is correct
5 Correct 63 ms 13332 KB Output is correct
6 Incorrect 127 ms 22356 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #4
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 134 ms 21644 KB Output is correct
2 Correct 66 ms 14216 KB Output is correct
3 Correct 69 ms 14184 KB Output is correct
4 Correct 127 ms 24252 KB Output is correct
5 Correct 63 ms 13332 KB Output is correct
6 Incorrect 127 ms 22356 KB Output isn't correct
7 Halted 0 ms 0 KB -