oj.uz

답안 #609561

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
609561 2022-07-27T17:20:12 Z skittles1412 늑대인간 (IOI18_werewolf) C++17
49 / 100
 1332 ms 114468 KB 
#include "bits/extc++.h"

using namespace std;

template <typename T>
void dbgh(const T& t) {
    cerr << t << endl;
}

template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
    cerr << t << " | ";
    dbgh(u...);
}

#ifdef DEBUG
#define dbg(...)                                              \
    cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]: "; \
    dbgh(__VA_ARGS__);
#else
#define dbg(...)
#define cerr   \
    if (false) \
    cerr
#endif

using vi = vector<int>;

#define endl "\n"
#define long int64_t
#define sz(x) int((x).size())

template <typename T>
ostream& operator<<(ostream& out, const vector<T>& arr) {
    for (int i = 0; i < sz(arr); i++) {
        if (i) {
            out << " ";
        }
        out << arr[i];
    }
    return out;
}

struct ST {
    int n;
    vector<int> v;

    ST(int n) : v(4 * n, 1e9) {}

    void update(int o, int l, int r, int ind, int x) {
        if (l == r) {
            v[o] = x;
            return;
        }
        int mid = (l + r) / 2, lc = o * 2, rc = lc + 1;
        if (ind <= mid) {
            update(lc, l, mid, ind, x);
        } else {
            update(rc, mid + 1, r, ind, x);
        }
        v[o] = min(v[lc], v[rc]);
    }

    void update(int ind, int x) {
        update(1, 0, n - 1, ind, x);
    }

    int query(int o, int l, int r, int ql, int qr) {
        if (ql <= l && r <= qr) {
            return v[o];
        }
        int mid = (l + r) / 2, lc = o * 2, rc = lc + 1, ans = 1e9;
        if (ql <= mid) {
            ans = min(ans, query(lc, l, mid, ql, qr));
        }
        if (mid < qr) {
            ans = min(ans, query(rc, mid + 1, r, ql, qr));
        }
        return ans;
    }

    int query(int l, int r) {
        return query(1, 0, n - 1, l, r);
    }
};

struct DSU {
    vector<int> p;

    DSU(int n) : p(n, -1) {}

    int find(int u) {
        return p[u] < 0 ? u : find(p[u]);
    }

    void merge(int u, int v) {
        u = find(u);
        v = find(v);
        if (u != v) {
            p[u] = v;
        }
    }
};

struct Tree {
    int n;
    vector<int> ord;
    vector<pair<int, int>> ranges;
    vector<vector<int>> lift, graph;

    Tree(const vector<int>& p)
        : n(sz(p)), ranges(n), lift(__lg(n) + 2, vector<int>(n)), graph(n) {
        vector<int> roots;
        for (int i = 0; i < n; i++) {
            if (p[i] >= 0) {
                graph[p[i]].push_back(i);
            } else {
                roots.push_back(i);
            }
        }
        for (auto& a : roots) {
            dfs(a);
        }
        lift[0] = p;
        for (int i = 0; i <= __lg(n); i++) {
            for (int j = 0; j < n; j++) {
                if (lift[i][j] == -1) {
                    lift[i + 1][j] = -1;
                } else {
                    lift[i + 1][j] = lift[i][lift[i][j]];
                }
            }
        }
    }

    void dfs(int u) {
        ranges[u].first = sz(ord);
        ord.push_back(u);
        for (auto& v : graph[u]) {
            dfs(v);
        }
        ranges[u].second = sz(ord);
    }

    template <typename T>
    pair<int, int> bsearch(int u, const T& t) {
        for (int i = __lg(n); i >= 0; i--) {
            int v = lift[i][u];
            if (v != -1 && t(v)) {
                u = v;
            }
        }
        return ranges[u];
    }
};

vector<int> solve(const vector<int>& arr1,
                  const vector<int>& arr2,
                  const vector<array<int, 4>>& queries) {
    int n = sz(arr1), q = sz(queries);
    pair<int, int> arr[n];
    for (int i = 0; i < n; i++) {
        arr[arr1[i]].first = i;
        arr[arr2[i]].second = i;
    }
    vector<int> upds[n], qs[n];
    for (auto& [x, y] : arr) {
        upds[x].push_back(y);
    }
    for (int qi = 0; qi < q; qi++) {
        auto& [l1, r1, l2, r2] = queries[qi];
        qs[l1].push_back(qi);
    }
    bool ans[q];
    ST st(n);
    for (int i = n - 1; i >= 0; i--) {
        for (auto& a : upds[i]) {
            st.update(a, i);
        }
        for (auto& a : qs[i]) {
            auto& [l1, r1, l2, r2] = queries[a];
            ans[a] = st.query(l2, r2 - 1) < r1;
        }
    }
    return vector<int>(ans, ans + q);
}

vi check_validity(int n, vi us, vi vs, vi qsrc, vi qdest, vi ql, vi qr) {
    int q = sz(qsrc);
    vector<int> graph[n];
    for (int i = 0; i < sz(us); i++) {
        graph[us[i]].push_back(vs[i]);
        graph[vs[i]].push_back(us[i]);
    }
    DSU inc(n), dec(n);
    for (int i = 0; i < n; i++) {
        for (auto& a : graph[i]) {
            if (a <= i) {
                inc.merge(a, i);
            }
        }
    }
    for (int i = n - 1; i >= 0; i--) {
        for (auto& a : graph[i]) {
            if (a >= i) {
                dec.merge(a, i);
            }
        }
    }
    Tree inct(inc.p), dect(dec.p);
    dbg(inc.p, dec.p);
    vector<array<int, 4>> queries(q);
    dbg(inct.ord, dect.ord);
    for (int qi = 0; qi < q; qi++) {
        int src = qsrc[qi], dest = qdest[qi], l = ql[qi], r = qr[qi];
        auto [il, ir] = inct.bsearch(dest, [&](int x) -> bool {
            return x <= r;
        });
        auto [dl, dr] = dect.bsearch(src, [&](int x) -> bool {
            return x >= l;
        });
        dbg(il, ir, dl, dr);
        queries[qi] = {il, ir, dl, dr};
    }
    return solve(inct.ord, dect.ord, queries);
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 7 ms 1620 KB Output is correct
11 Correct 5 ms 1620 KB Output is correct
12 Correct 5 ms 1620 KB Output is correct
13 Correct 12 ms 1660 KB Output is correct
14 Correct 11 ms 1640 KB Output is correct
15 Correct 12 ms 1748 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 714 ms 101816 KB Output is correct
2 Correct 729 ms 100960 KB Output is correct
3 Correct 688 ms 108856 KB Output is correct
4 Correct 698 ms 108800 KB Output is correct
5 Correct 581 ms 108888 KB Output is correct
6 Correct 605 ms 109560 KB Output is correct
7 Correct 678 ms 109180 KB Output is correct
8 Correct 646 ms 109364 KB Output is correct
9 Correct 544 ms 108900 KB Output is correct
10 Correct 460 ms 108484 KB Output is correct
11 Correct 526 ms 108588 KB Output is correct
12 Correct 496 ms 108520 KB Output is correct
13 Correct 752 ms 114468 KB Output is correct
14 Correct 725 ms 114468 KB Output is correct
15 Correct 1176 ms 114376 KB Output is correct
16 Correct 779 ms 114420 KB Output is correct
17 Correct 703 ms 109328 KB Output is correct

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 7 ms 1620 KB Output is correct
11 Correct 5 ms 1620 KB Output is correct
12 Correct 5 ms 1620 KB Output is correct
13 Correct 12 ms 1660 KB Output is correct
14 Correct 11 ms 1640 KB Output is correct
15 Correct 12 ms 1748 KB Output is correct
16 Correct 714 ms 101816 KB Output is correct
17 Correct 729 ms 100960 KB Output is correct
18 Correct 688 ms 108856 KB Output is correct
19 Correct 698 ms 108800 KB Output is correct
20 Correct 581 ms 108888 KB Output is correct
21 Correct 605 ms 109560 KB Output is correct
22 Correct 678 ms 109180 KB Output is correct
23 Correct 646 ms 109364 KB Output is correct
24 Correct 544 ms 108900 KB Output is correct
25 Correct 460 ms 108484 KB Output is correct
26 Correct 526 ms 108588 KB Output is correct
27 Correct 496 ms 108520 KB Output is correct
28 Correct 752 ms 114468 KB Output is correct
29 Correct 725 ms 114468 KB Output is correct
30 Correct 1176 ms 114376 KB Output is correct
31 Correct 779 ms 114420 KB Output is correct
32 Correct 703 ms 109328 KB Output is correct
33 Correct 1144 ms 110028 KB Output is correct
34 Runtime error 1332 ms 59316 KB Execution killed with signal 11
35 Halted 0 ms 0 KB -