oj.uz

답안 #824723

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
824723 2023-08-14T09:10:26 Z Koyote 운세 보기 2 (JOI14_fortune_telling2) C++14
35 / 100
 139 ms 70644 KB 
#include <bits/stdc++.h>
using namespace std;

#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()

template<class T> struct merge_sort_tree {
    int _l, _r, _m;
    vector<T> v;
    merge_sort_tree *left, *right;
    merge_sort_tree(int l, int r, vector<T> &e) {
        v.resize(r - l + 1);
        _l = l, _r = r, _m = (l + r) >> 1, v[0] = e[l];
        if (l == r) left = right = nullptr;
        else {
            left = new merge_sort_tree(_l, _m, e);
            right = new merge_sort_tree(_m + 1, _r, e);
            vector<T> v1 = left->v, v2 = right->v;
            v.clear();
            int s1 = sz(v1), s2 = sz(v2);
            v.reserve(s1 + s2);
            int i = 0, j = 0;
            while (i < s1 && j < s2) {
                if (v1[i] <= v2[j]) v.push_back(v1[i]), i++;
                else v.push_back(v2[j]), j++;
            }
            while (i < s1) v.push_back(v1[i]), i++;
            while (j < s2) v.push_back(v2[j]), j++;
        }
    }
    int count(int l, int r, T a, T b) {
        if (a > b) return 0;
        if (l > _r || r < _l) return 0;
        if (_l >= l && _r <= r) return upper_bound(all(v), b) - lower_bound(all(v), a);
        return left->count(l, r, a, b) + right->count(l, r, a, b);
    }
};

const int N = 2e5 + 7, LG = 22;
int n, k, a[N], b[N], t[N], ti[N];
int spt_max_ti[N][LG];

int lg2(int x) { return x ? 31 - __builtin_clz(x) : -1; }

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n >> k;
    for (int i = 0; i < n; i++) cin >> a[i] >> b[i];
    for (int i = 0; i < k; i++) cin >> t[i];

    vector<int> compr; compr.reserve(2 * n + k);
    for (int i = 0; i < n; i++) compr.push_back(a[i]), compr.push_back(b[i]);
    for (int i = 0; i < k; i++) compr.push_back(t[i]);
    sort(compr.begin(), compr.end());
    compr.erase(unique(compr.begin(), compr.end()), compr.end());
    for (int i = 0; i < n; i++) {
        a[i] = lower_bound(compr.begin(), compr.end(), a[i]) - compr.begin();
        b[i] = lower_bound(compr.begin(), compr.end(), b[i]) - compr.begin();
    }
    for (int i = 0; i < k; i++)
        t[i] = lower_bound(compr.begin(), compr.end(), t[i]) - compr.begin();

    int max_ti = compr.size();
    for (int i = 0; i <= max_ti; i++) ti[i] = -1;
    for (int i = 0; i < k; i++) ti[t[i]] = i;
    for (int i = 0; i <= max_ti; i++)
        spt_max_ti[i][0] = ti[i];
    for (int j = 1; j < LG; j++)
        for (int i = 0; i + (1 << j) - 1 <= max_ti; i++)
            spt_max_ti[i][j] = max(spt_max_ti[i][j - 1], spt_max_ti[i + (1 << (j - 1))][j - 1]);
    
    auto query_max_ti = [&](int l, int r) {
        int len = lg2(r - l + 1);
        return max(spt_max_ti[l][len], spt_max_ti[r - (1 << len) + 1][len]);
    };

    vector<int> t_vector(k);
    for (int i = 0; i < k; i++) t_vector[i] = t[i];
    auto cnt_in_range_ab = merge_sort_tree<int>(0, k - 1, t_vector);

    long long ans = 0;
    for (int i = 0; i < n; i++) {
        if (a[i] == b[i]) { ans += compr[a[i]]; continue; }
        bool swapped = (a[i] > b[i]);
        if (a[i] > b[i]) swap(a[i], b[i]);
        auto last_pos = query_max_ti(a[i], b[i] - 1);
        int cnt_flipped = cnt_in_range_ab.count(last_pos + 1, k - 1, b[i], int(1e9));

        if (last_pos != -1 || swapped) swap(a[i], b[i]);
        if (cnt_flipped % 2 == 0) ans += compr[a[i]];
        else ans += compr[b[i]];
    }
    cout << ans << '\n';
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 2 ms 864 KB Output is correct
4 Correct 1 ms 852 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 852 KB Output is correct
8 Correct 1 ms 852 KB Output is correct
9 Correct 1 ms 852 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 724 KB Output is correct

Subtask #2
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 2 ms 864 KB Output is correct
4 Correct 1 ms 852 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 852 KB Output is correct
8 Correct 1 ms 852 KB Output is correct
9 Correct 1 ms 852 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 12 ms 5588 KB Output is correct
15 Correct 24 ms 10920 KB Output is correct
16 Correct 39 ms 16412 KB Output is correct
17 Correct 68 ms 21700 KB Output is correct
18 Correct 55 ms 21688 KB Output is correct
19 Correct 56 ms 21772 KB Output is correct
20 Correct 61 ms 21768 KB Output is correct
21 Correct 51 ms 21708 KB Output is correct
22 Correct 40 ms 18080 KB Output is correct
23 Correct 40 ms 16372 KB Output is correct
24 Correct 39 ms 14924 KB Output is correct
25 Correct 39 ms 19168 KB Output is correct
26 Correct 44 ms 17460 KB Output is correct
27 Correct 56 ms 18188 KB Output is correct
28 Correct 46 ms 18184 KB Output is correct
29 Correct 71 ms 20040 KB Output is correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 724 KB Output is correct
3 Correct 2 ms 864 KB Output is correct
4 Correct 1 ms 852 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 852 KB Output is correct
8 Correct 1 ms 852 KB Output is correct
9 Correct 1 ms 852 KB Output is correct
10 Correct 1 ms 596 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 724 KB Output is correct
14 Correct 12 ms 5588 KB Output is correct
15 Correct 24 ms 10920 KB Output is correct
16 Correct 39 ms 16412 KB Output is correct
17 Correct 68 ms 21700 KB Output is correct
18 Correct 55 ms 21688 KB Output is correct
19 Correct 56 ms 21772 KB Output is correct
20 Correct 61 ms 21768 KB Output is correct
21 Correct 51 ms 21708 KB Output is correct
22 Correct 40 ms 18080 KB Output is correct
23 Correct 40 ms 16372 KB Output is correct
24 Correct 39 ms 14924 KB Output is correct
25 Correct 39 ms 19168 KB Output is correct
26 Correct 44 ms 17460 KB Output is correct
27 Correct 56 ms 18188 KB Output is correct
28 Correct 46 ms 18184 KB Output is correct
29 Correct 71 ms 20040 KB Output is correct
30 Incorrect 139 ms 70644 KB Output isn't correct
31 Halted 0 ms 0 KB -