oj.uz

답안 #874232

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
874232 2023-11-16T13:23:04 Z tvladm2009 Long Mansion (JOI17_long_mansion) C++17
100 / 100
 643 ms 66560 KB 
#include <bits/stdc++.h>

using i64 = long long;

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int n;
    std::cin >> n;
    std::vector<int> a(n);
    std::vector<std::vector<int>> keys(n + 1), inds(n + 1);
    for (int i = 1; i < n; i++) {
        std::cin >> a[i];
    }
    for (int i = 1; i <= n; i++) {
        int m;
        std::cin >> m;
        keys[i].resize(m);
        for (int j = 0; j < m; j++) {
            std::cin >> keys[i][j];
            inds[keys[i][j]].push_back(i);
        }
    }

    auto check = [&](int l, int r, int x) {
        auto it = lower_bound(inds[x].begin(), inds[x].end(), l);
        return it != inds[x].end() && *it <= r;
    };

    std::vector<int> L(n + 1), R(n + 1), cnt(n + 1, 0);
    auto solve = [&](auto self, int l, int r) -> void {
        if (l > r) {
            return;
        }

        int m = (l + r) / 2;
        self(self, l, m - 1);
        self(self, m + 1, r);

        std::vector<int> left;
        for (int i = m - 1; i >= l; i--) {
            if (R[i] == m - 1 && check(L[i], R[i], a[m - 1])) {
                left.push_back(i);
            }
        }

        std::vector<int> right;
        for (int i = m + 1; i <= r; i++) {
            if (L[i] == m + 1 && check(L[i], R[i], a[m])) {
                right.push_back(i);
            }
        }
        std::vector<int> clr;
        auto add = [&](int i) {
            for (auto x : keys[i]) {
                cnt[x]++;
                clr.push_back(x);
            }
        };

        auto clear = [&]() {
            for (auto it : clr) {
                cnt[it] = 0;
            }
        };

        int ql = m, qr = m;
        auto advance = [&]() {
            while (true) {
                if (ql > l && cnt[a[ql - 1]] > 0) {
                    ql--;
                    add(ql);
                } else if (qr < r && cnt[a[qr]] > 0) {
                    qr++;
                    add(qr);
                } else {
                    break;
                }
            }
        };
        add(m);
        advance();

        L[m] = ql;
        R[m] = qr;
        int last = m;
        for (auto pos : left) {
            for (int j = last - 1; j >= L[pos]; j--) {
                add(j);
            }
            advance();
            L[pos] = ql;
            R[pos] = qr;
            last = L[pos];
        };
        clear();

        ql = m;
        qr = m;
        add(m);
        advance();

        last = m;
        for (auto pos : right) {
            for (int j = last + 1; j <= R[pos]; j++) {
                add(j);
            }
            advance();
            L[pos] = ql;
            R[pos] = qr;
            last = R[pos];
        }
        clear();
    };
    solve(solve, 1, n);

    int q;
    std::cin >> q;
    while (q--) {
        int x, y;
        std::cin >> x >> y;
        std::cout << (y >= L[x] && y <= R[x] ? "YES" : "NO") << "\n";
    }
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 604 KB Output is correct
2 Correct 4 ms 860 KB Output is correct
3 Correct 5 ms 1028 KB Output is correct
4 Correct 3 ms 604 KB Output is correct
5 Correct 3 ms 604 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 2 ms 604 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 604 KB Output is correct
2 Correct 4 ms 860 KB Output is correct
3 Correct 5 ms 1028 KB Output is correct
4 Correct 3 ms 604 KB Output is correct
5 Correct 3 ms 604 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 79 ms 2144 KB Output is correct
9 Correct 79 ms 2112 KB Output is correct
10 Correct 79 ms 2524 KB Output is correct
11 Correct 81 ms 2696 KB Output is correct
12 Correct 91 ms 2308 KB Output is correct
13 Correct 76 ms 2388 KB Output is correct
14 Correct 82 ms 2524 KB Output is correct
15 Correct 77 ms 2544 KB Output is correct
16 Correct 77 ms 2720 KB Output is correct
17 Correct 76 ms 2388 KB Output is correct
18 Correct 78 ms 2384 KB Output is correct
19 Correct 78 ms 2428 KB Output is correct
20 Correct 76 ms 2588 KB Output is correct
21 Correct 82 ms 2636 KB Output is correct
22 Correct 76 ms 2416 KB Output is correct
23 Correct 77 ms 2132 KB Output is correct
24 Correct 77 ms 2132 KB Output is correct
25 Correct 77 ms 2292 KB Output is correct
26 Correct 76 ms 2204 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 255 ms 24624 KB Output is correct
2 Correct 279 ms 25760 KB Output is correct
3 Correct 255 ms 25036 KB Output is correct
4 Correct 249 ms 24704 KB Output is correct
5 Correct 254 ms 24460 KB Output is correct
6 Correct 215 ms 18800 KB Output is correct
7 Correct 217 ms 15096 KB Output is correct
8 Correct 228 ms 19036 KB Output is correct
9 Correct 217 ms 15284 KB Output is correct
10 Correct 212 ms 15128 KB Output is correct
11 Correct 215 ms 18772 KB Output is correct

Subtask #4
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 604 KB Output is correct
2 Correct 4 ms 860 KB Output is correct
3 Correct 5 ms 1028 KB Output is correct
4 Correct 3 ms 604 KB Output is correct
5 Correct 3 ms 604 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 79 ms 2144 KB Output is correct
9 Correct 79 ms 2112 KB Output is correct
10 Correct 79 ms 2524 KB Output is correct
11 Correct 81 ms 2696 KB Output is correct
12 Correct 91 ms 2308 KB Output is correct
13 Correct 76 ms 2388 KB Output is correct
14 Correct 82 ms 2524 KB Output is correct
15 Correct 77 ms 2544 KB Output is correct
16 Correct 77 ms 2720 KB Output is correct
17 Correct 76 ms 2388 KB Output is correct
18 Correct 78 ms 2384 KB Output is correct
19 Correct 78 ms 2428 KB Output is correct
20 Correct 76 ms 2588 KB Output is correct
21 Correct 82 ms 2636 KB Output is correct
22 Correct 76 ms 2416 KB Output is correct
23 Correct 77 ms 2132 KB Output is correct
24 Correct 77 ms 2132 KB Output is correct
25 Correct 77 ms 2292 KB Output is correct
26 Correct 76 ms 2204 KB Output is correct
27 Correct 255 ms 24624 KB Output is correct
28 Correct 279 ms 25760 KB Output is correct
29 Correct 255 ms 25036 KB Output is correct
30 Correct 249 ms 24704 KB Output is correct
31 Correct 254 ms 24460 KB Output is correct
32 Correct 215 ms 18800 KB Output is correct
33 Correct 217 ms 15096 KB Output is correct
34 Correct 228 ms 19036 KB Output is correct
35 Correct 217 ms 15284 KB Output is correct
36 Correct 212 ms 15128 KB Output is correct
37 Correct 215 ms 18772 KB Output is correct
38 Correct 270 ms 42392 KB Output is correct
39 Correct 265 ms 51524 KB Output is correct
40 Correct 228 ms 32944 KB Output is correct
41 Correct 643 ms 66560 KB Output is correct
42 Correct 154 ms 13140 KB Output is correct
43 Correct 160 ms 12724 KB Output is correct
44 Correct 271 ms 24364 KB Output is correct
45 Correct 270 ms 24404 KB Output is correct
46 Correct 308 ms 24916 KB Output is correct
47 Correct 212 ms 14644 KB Output is correct
48 Correct 200 ms 14956 KB Output is correct
49 Correct 353 ms 24004 KB Output is correct
50 Correct 367 ms 26420 KB Output is correct
51 Correct 373 ms 27416 KB Output is correct
52 Correct 205 ms 31464 KB Output is correct
53 Correct 274 ms 44044 KB Output is correct
54 Correct 267 ms 55496 KB Output is correct
55 Correct 242 ms 44152 KB Output is correct