oj.uz

답안 #674947

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
674947 2022-12-26T16:37:27 Z skittles1412 Worst Reporter 4 (JOI21_worst_reporter4) C++17
79 / 100
 805 ms 132264 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 cerr   \
    if (false) \
    cerr
#define dbg(...)
#endif

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

constexpr int maxn = 2e5 + 5;

struct DS {
    struct Node {
        long v, lazy;
        int lc, rc;
    };

    inline static int heap_ptr = 1;
    inline static Node heap[1 << 25] {};

    static int alloc() {
        return heap_ptr++;
    }
    static void alloc(int& o) {
        if (!o) {
            o = alloc();
        }
    }

    static void maintain(int o) {
        auto& [v, lazy, lc, rc] = heap[o];
        v = min(heap[lc].v, heap[rc].v) + lazy;
    }

    static void merge(int& a, int& b, int l, int r) {
        if (!b) {
            return;
        } else if (!a) {
            a = b;
            return;
        }
        auto& [v, lazy, lc, rc] = heap[a];
        int mid = (l + r) / 2;
        lazy += heap[b].lazy;
        merge(lc, heap[b].lc, l, mid);
        merge(rc, heap[b].rc, mid + 1, r);
        maintain(a);
    }

    friend void merge(DS& a, DS& b) {
        merge(a.root, b.root, 0, maxn);
    }

    static long get(int o, int l, int r, int ind) {
        if (!o) {
            return 0;
        }
        auto& [v, lazy, lc, rc] = heap[o];
        if (l == r) {
            return v;
        }
        int mid = (l + r) / 2;
        if (ind <= mid) {
            return lazy + get(lc, l, mid, ind);
        } else {
            return lazy + get(rc, mid + 1, r, ind);
        }
    }

    static void upd_add(int& o, long x) {
        alloc(o);
        heap[o].lazy += x;
        maintain(o);
    }

    static long query_min(int o, int l, int r, int ql, int qr) {
        if (!o) {
            return 0;
        }
        auto& [v, lazy, lc, rc] = heap[o];
        if (ql <= l && r <= qr) {
            return v;
        }
        int mid = (l + r) / 2;
        long ans = 1e18;
        if (ql <= mid) {
            ans = min(ans, query_min(lc, l, mid, ql, qr));
        }
        if (mid < qr) {
            ans = min(ans, query_min(rc, mid + 1, r, ql, qr));
        }
        return ans + lazy;
    }

    static void upd_set(int& o, int l, int r, int ql, int qr, long x) {
        alloc(o);
        auto& [v, lazy, lc, rc] = heap[o];
        if (ql <= l && r <= qr) {
            lc = rc = 0;
            v = lazy = x;
            return;
        }
        int mid = (l + r) / 2;
        x -= lazy;
        if (ql <= mid) {
            upd_set(lc, l, mid, ql, qr, x);
        }
        if (mid < qr) {
            upd_set(rc, mid + 1, r, ql, qr, x);
        }
        maintain(o);
    }

    int root = 0;

    long get(int ind) const {
        return get(root, 0, maxn, ind);
    }

    void upd_add(long x) {
        upd_add(root, x);
    }

    long query_min(int l, int r) const {
        return query_min(root, 0, maxn, l, r);
    }

    void upd_set(int l, int r, long x) {
        upd_set(root, 0, maxn, l, r, x);
    }

    void upd_min(int qr, long x) {
        int l = 0, r = qr + 1;
        while (l < r) {
            int mid = (l + r) / 2;
            if (query_min(mid, qr) >= x) {
                r = mid;
            } else {
                l = mid + 1;
            }
        }
        if (l <= qr) {
            upd_set(l, qr, x);
        }
    }
};

int arr[maxn], cost[maxn];
vector<int> graph[maxn];

DS dp(int u, int p = -1) {
    DS cur;
    long cans = 0;
    for (auto& v : graph[u]) {
        if (v == p) {
            continue;
        }
        auto&& ndp = dp(v, u);
        cans += ndp.get(arr[u]);
        merge(cur, ndp);
    }
    cur.upd_add(cost[u]);
    cur.upd_min(arr[u], cans);
    return cur;
}

void solve() {
    int n;
    cin >> n;
    int par[n];
    for (int i = 0; i < n; i++) {
        cin >> par[i] >> arr[i] >> cost[i];
        par[i]--;
    }
    for (int i = 1; i < n; i++) {
        graph[par[i]].push_back(i);
    }
    vector<int> comp(arr, arr + n);
    sort(begin(comp), end(comp));
    comp.erase(unique(begin(comp), end(comp)), comp.end());
    for (int i = 0; i < n; i++) {
        arr[i] =
            int(lower_bound(begin(comp), end(comp), arr[i]) - comp.begin());
    }
    cout << dp(0).get(0) << endl;
}

int main() {
    cin.tie(nullptr);
    cin.exceptions(ios::failbit);
    ios_base::sync_with_stdio(false);
    solve();
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5036 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 12 ms 7472 KB Output is correct
6 Correct 11 ms 6740 KB Output is correct
7 Correct 8 ms 6452 KB Output is correct
8 Correct 12 ms 7508 KB Output is correct
9 Correct 10 ms 6740 KB Output is correct
10 Correct 8 ms 6484 KB Output is correct
11 Correct 7 ms 6444 KB Output is correct
12 Correct 15 ms 6952 KB Output is correct
13 Correct 7 ms 6100 KB Output is correct
14 Correct 15 ms 6612 KB Output is correct
15 Correct 10 ms 5808 KB Output is correct
16 Correct 12 ms 7380 KB Output is correct
17 Correct 9 ms 6700 KB Output is correct
18 Correct 7 ms 6356 KB Output is correct
19 Correct 13 ms 7092 KB Output is correct
20 Correct 10 ms 6836 KB Output is correct
21 Correct 7 ms 6700 KB Output is correct
22 Correct 9 ms 7892 KB Output is correct
23 Correct 10 ms 7472 KB Output is correct
24 Correct 13 ms 7096 KB Output is correct
25 Correct 9 ms 6868 KB Output is correct
26 Correct 11 ms 6224 KB Output is correct
27 Correct 12 ms 7380 KB Output is correct
28 Correct 15 ms 7084 KB Output is correct
29 Correct 15 ms 6624 KB Output is correct
30 Correct 14 ms 5964 KB Output is correct
31 Correct 15 ms 5984 KB Output is correct

Subtask #2
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5036 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 12 ms 7472 KB Output is correct
6 Correct 11 ms 6740 KB Output is correct
7 Correct 8 ms 6452 KB Output is correct
8 Correct 12 ms 7508 KB Output is correct
9 Correct 10 ms 6740 KB Output is correct
10 Correct 8 ms 6484 KB Output is correct
11 Correct 7 ms 6444 KB Output is correct
12 Correct 15 ms 6952 KB Output is correct
13 Correct 7 ms 6100 KB Output is correct
14 Correct 15 ms 6612 KB Output is correct
15 Correct 10 ms 5808 KB Output is correct
16 Correct 12 ms 7380 KB Output is correct
17 Correct 9 ms 6700 KB Output is correct
18 Correct 7 ms 6356 KB Output is correct
19 Correct 13 ms 7092 KB Output is correct
20 Correct 10 ms 6836 KB Output is correct
21 Correct 7 ms 6700 KB Output is correct
22 Correct 9 ms 7892 KB Output is correct
23 Correct 10 ms 7472 KB Output is correct
24 Correct 13 ms 7096 KB Output is correct
25 Correct 9 ms 6868 KB Output is correct
26 Correct 11 ms 6224 KB Output is correct
27 Correct 12 ms 7380 KB Output is correct
28 Correct 15 ms 7084 KB Output is correct
29 Correct 15 ms 6624 KB Output is correct
30 Correct 14 ms 5964 KB Output is correct
31 Correct 15 ms 5984 KB Output is correct
32 Correct 12 ms 7360 KB Output is correct
33 Correct 497 ms 130008 KB Output is correct
34 Correct 361 ms 90484 KB Output is correct
35 Correct 494 ms 130124 KB Output is correct
36 Correct 352 ms 90628 KB Output is correct
37 Correct 221 ms 62840 KB Output is correct
38 Correct 197 ms 60696 KB Output is correct
39 Correct 740 ms 102748 KB Output is correct
40 Correct 409 ms 55768 KB Output is correct
41 Correct 158 ms 50892 KB Output is correct
42 Correct 724 ms 91096 KB Output is correct
43 Correct 405 ms 41548 KB Output is correct
44 Correct 458 ms 129528 KB Output is correct
45 Correct 320 ms 89372 KB Output is correct
46 Correct 156 ms 60828 KB Output is correct
47 Correct 805 ms 98020 KB Output is correct
48 Correct 317 ms 82124 KB Output is correct
49 Correct 180 ms 76124 KB Output is correct
50 Correct 305 ms 132264 KB Output is correct
51 Correct 221 ms 113568 KB Output is correct
52 Correct 731 ms 95532 KB Output is correct
53 Correct 313 ms 82744 KB Output is correct
54 Correct 435 ms 57352 KB Output is correct
55 Correct 550 ms 103276 KB Output is correct
56 Correct 642 ms 82504 KB Output is correct
57 Correct 689 ms 71896 KB Output is correct
58 Correct 724 ms 43980 KB Output is correct
59 Correct 729 ms 43852 KB Output is correct

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5036 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 12 ms 7472 KB Output is correct
6 Correct 11 ms 6740 KB Output is correct
7 Correct 8 ms 6452 KB Output is correct
8 Correct 12 ms 7508 KB Output is correct
9 Correct 10 ms 6740 KB Output is correct
10 Correct 8 ms 6484 KB Output is correct
11 Correct 7 ms 6444 KB Output is correct
12 Correct 15 ms 6952 KB Output is correct
13 Correct 7 ms 6100 KB Output is correct
14 Correct 15 ms 6612 KB Output is correct
15 Correct 10 ms 5808 KB Output is correct
16 Correct 12 ms 7380 KB Output is correct
17 Correct 9 ms 6700 KB Output is correct
18 Correct 7 ms 6356 KB Output is correct
19 Correct 13 ms 7092 KB Output is correct
20 Correct 10 ms 6836 KB Output is correct
21 Correct 7 ms 6700 KB Output is correct
22 Correct 9 ms 7892 KB Output is correct
23 Correct 10 ms 7472 KB Output is correct
24 Correct 13 ms 7096 KB Output is correct
25 Correct 9 ms 6868 KB Output is correct
26 Correct 11 ms 6224 KB Output is correct
27 Correct 12 ms 7380 KB Output is correct
28 Correct 15 ms 7084 KB Output is correct
29 Correct 15 ms 6624 KB Output is correct
30 Correct 14 ms 5964 KB Output is correct
31 Correct 15 ms 5984 KB Output is correct
32 Correct 12 ms 7360 KB Output is correct
33 Correct 497 ms 130008 KB Output is correct
34 Correct 361 ms 90484 KB Output is correct
35 Correct 494 ms 130124 KB Output is correct
36 Correct 352 ms 90628 KB Output is correct
37 Correct 221 ms 62840 KB Output is correct
38 Correct 197 ms 60696 KB Output is correct
39 Correct 740 ms 102748 KB Output is correct
40 Correct 409 ms 55768 KB Output is correct
41 Correct 158 ms 50892 KB Output is correct
42 Correct 724 ms 91096 KB Output is correct
43 Correct 405 ms 41548 KB Output is correct
44 Correct 458 ms 129528 KB Output is correct
45 Correct 320 ms 89372 KB Output is correct
46 Correct 156 ms 60828 KB Output is correct
47 Correct 805 ms 98020 KB Output is correct
48 Correct 317 ms 82124 KB Output is correct
49 Correct 180 ms 76124 KB Output is correct
50 Correct 305 ms 132264 KB Output is correct
51 Correct 221 ms 113568 KB Output is correct
52 Correct 731 ms 95532 KB Output is correct
53 Correct 313 ms 82744 KB Output is correct
54 Correct 435 ms 57352 KB Output is correct
55 Correct 550 ms 103276 KB Output is correct
56 Correct 642 ms 82504 KB Output is correct
57 Correct 689 ms 71896 KB Output is correct
58 Correct 724 ms 43980 KB Output is correct
59 Correct 729 ms 43852 KB Output is correct
60 Correct 2 ms 4948 KB Output is correct
61 Incorrect 3 ms 4948 KB Output isn't correct
62 Halted 0 ms 0 KB -