oj.uz

답안 #824736

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
824736 2023-08-14T09:16:29 Z Koyote 운세 보기 2 (JOI14_fortune_telling2) C++14
35 / 100
 170 ms 110964 KB 
#include <bits/stdc++.h>
using namespace std;

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

#define int int64_t

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; }

int32_t 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 852 KB Output is correct
2 Correct 2 ms 980 KB Output is correct
3 Correct 2 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 2 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 852 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 1044 KB Output is correct

Subtask #2
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 852 KB Output is correct
2 Correct 2 ms 980 KB Output is correct
3 Correct 2 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 2 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 852 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 1044 KB Output is correct
14 Correct 14 ms 9428 KB Output is correct
15 Correct 32 ms 18588 KB Output is correct
16 Correct 50 ms 27880 KB Output is correct
17 Correct 80 ms 37600 KB Output is correct
18 Correct 68 ms 37376 KB Output is correct
19 Correct 69 ms 37344 KB Output is correct
20 Correct 75 ms 37364 KB Output is correct
21 Correct 67 ms 37376 KB Output is correct
22 Correct 45 ms 30208 KB Output is correct
23 Correct 43 ms 26560 KB Output is correct
24 Correct 49 ms 23872 KB Output is correct
25 Correct 48 ms 32188 KB Output is correct
26 Correct 52 ms 28736 KB Output is correct
27 Correct 68 ms 30148 KB Output is correct
28 Correct 54 ms 30220 KB Output is correct
29 Correct 75 ms 33724 KB Output is correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 852 KB Output is correct
2 Correct 2 ms 980 KB Output is correct
3 Correct 2 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 2 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 852 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 1044 KB Output is correct
14 Correct 14 ms 9428 KB Output is correct
15 Correct 32 ms 18588 KB Output is correct
16 Correct 50 ms 27880 KB Output is correct
17 Correct 80 ms 37600 KB Output is correct
18 Correct 68 ms 37376 KB Output is correct
19 Correct 69 ms 37344 KB Output is correct
20 Correct 75 ms 37364 KB Output is correct
21 Correct 67 ms 37376 KB Output is correct
22 Correct 45 ms 30208 KB Output is correct
23 Correct 43 ms 26560 KB Output is correct
24 Correct 49 ms 23872 KB Output is correct
25 Correct 48 ms 32188 KB Output is correct
26 Correct 52 ms 28736 KB Output is correct
27 Correct 68 ms 30148 KB Output is correct
28 Correct 54 ms 30220 KB Output is correct
29 Correct 75 ms 33724 KB Output is correct
30 Incorrect 170 ms 110964 KB Output isn't correct
31 Halted 0 ms 0 KB -