oj.uz

답안 #205907

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
205907 2020-03-01T10:19:25 Z himyu Fireworks (APIO16_fireworks) C++17
26 / 100
 11 ms 7544 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

using i64 = long long;
using d64 = long double;
using pi = pair<int, int>;
using pli = pair<i64, i64>;
using ti = tuple<int, int, int>;
using tli = tuple<i64, i64, i64>;

template <class T>
using ordered_set =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define iterall(cont) cont.begin(), cont.end()
#define prec(n) setprecision(n) << fixed

vector<pli> adj[300001];
const i64 inf = numeric_limits<i64>::max() / 3;

inline i64 ab(i64 x) { return x > 0 ? x : -x; }

class slope {
   public:
    vector<i64> bp;
    i64 sac, pen;

    slope() {
        bp.clear();
        sac = 0, pen = 0;
    }

    void push(i64 x) {
        if (bp.empty()) {
            bp.emplace_back(x);
            bp.emplace_back(x);
            ++sac;
            return;
        }

        while (bp.size() > sac + 1) bp.pop_back();
        bp[sac] += x;
        bp[sac - 1] += x;
    }

    i64 get(int x) const {
        if (bp.empty()) return 0;

        i64 ret = 0;
        if (x > bp[sac])
            for (int i = sac; i < bp.size(); i++) ret += max(x - bp[i], 0LL);
        if (x < bp[sac - 1])
            for (int i = sac - 1; i >= 0; i--) ret += max(bp[i] - x, 0LL);
        return ret;
    }

    void print() {
        cout << "sac: " << sac << endl;
        cout << "pen: " << pen << endl;
        cout << "bp: ";
        for (auto el : bp) cout << el << " ";
        cout << endl;
    }
};

slope mer(const vector<slope> &sl) {
    slope ret;

    for (auto &sp : sl) {
        ret.sac += sp.sac;
        ret.pen += sp.pen;
    }

    for (auto &sp : sl) {
        for (auto el : sp.bp) {
            ret.bp.emplace_back(el);
        }
    }
    sort(iterall(ret.bp));

    for (auto &sp : sl) ret.pen += sp.get(ret.bp[ret.sac]);
    return ret;
}

slope solve(int h, int p = -1) {
    vector<slope> tomer;
    for (auto [t, wf] : adj[h]) {
        if (t == p) continue;
        auto chslp = solve(t, h);
        chslp.push(wf);
        tomer.emplace_back(chslp);
    }

    return mer(tomer);
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int N, M;
    cin >> N >> M;

    for (int i = 2; i <= N + M; i++) {
        i64 j, w;
        cin >> j >> w;

        adj[i].emplace_back(j, w);
        adj[j].emplace_back(i, w);
    }

    cout << solve(1).pen << endl;

    return 0;
}

Compilation message

fireworks.cpp: In member function 'void slope::push(i64)':
fireworks.cpp:45:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while (bp.size() > sac + 1) bp.pop_back();
                ~~~~~~~~~~^~~~~~~~~
fireworks.cpp: In member function 'i64 slope::get(int) const':
fireworks.cpp:55:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = sac; i < bp.size(); i++) ret += max(x - bp[i], 0LL);
                               ~~^~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 7416 KB Output is correct
2 Correct 9 ms 7416 KB Output is correct
3 Correct 11 ms 7416 KB Output is correct
4 Correct 9 ms 7416 KB Output is correct
5 Correct 9 ms 7420 KB Output is correct
6 Correct 9 ms 7416 KB Output is correct
7 Correct 9 ms 7416 KB Output is correct
8 Correct 9 ms 7416 KB Output is correct
9 Correct 10 ms 7416 KB Output is correct
10 Correct 9 ms 7416 KB Output is correct

Subtask #2
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 7416 KB Output is correct
2 Correct 10 ms 7416 KB Output is correct
3 Correct 10 ms 7416 KB Output is correct
4 Correct 10 ms 7416 KB Output is correct
5 Correct 10 ms 7416 KB Output is correct
6 Correct 9 ms 7416 KB Output is correct
7 Correct 9 ms 7416 KB Output is correct
8 Correct 10 ms 7544 KB Output is correct
9 Correct 9 ms 7416 KB Output is correct
10 Correct 9 ms 7416 KB Output is correct
11 Correct 9 ms 7416 KB Output is correct
12 Correct 9 ms 7416 KB Output is correct
13 Correct 9 ms 7416 KB Output is correct
14 Correct 10 ms 7416 KB Output is correct
15 Correct 9 ms 7416 KB Output is correct
16 Correct 9 ms 7416 KB Output is correct
17 Correct 9 ms 7416 KB Output is correct
18 Correct 9 ms 7416 KB Output is correct
19 Correct 10 ms 7416 KB Output is correct

Subtask #3
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 7416 KB Output is correct
2 Correct 9 ms 7416 KB Output is correct
3 Correct 11 ms 7416 KB Output is correct
4 Correct 9 ms 7416 KB Output is correct
5 Correct 9 ms 7420 KB Output is correct
6 Correct 9 ms 7416 KB Output is correct
7 Correct 9 ms 7416 KB Output is correct
8 Correct 9 ms 7416 KB Output is correct
9 Correct 10 ms 7416 KB Output is correct
10 Correct 9 ms 7416 KB Output is correct
11 Correct 9 ms 7416 KB Output is correct
12 Correct 10 ms 7416 KB Output is correct
13 Correct 10 ms 7416 KB Output is correct
14 Correct 10 ms 7416 KB Output is correct
15 Correct 10 ms 7416 KB Output is correct
16 Correct 9 ms 7416 KB Output is correct
17 Correct 9 ms 7416 KB Output is correct
18 Correct 10 ms 7544 KB Output is correct
19 Correct 9 ms 7416 KB Output is correct
20 Correct 9 ms 7416 KB Output is correct
21 Correct 9 ms 7416 KB Output is correct
22 Correct 9 ms 7416 KB Output is correct
23 Correct 9 ms 7416 KB Output is correct
24 Correct 10 ms 7416 KB Output is correct
25 Correct 9 ms 7416 KB Output is correct
26 Correct 9 ms 7416 KB Output is correct
27 Correct 9 ms 7416 KB Output is correct
28 Correct 9 ms 7416 KB Output is correct
29 Correct 10 ms 7416 KB Output is correct
30 Incorrect 9 ms 7420 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 7416 KB Output is correct
2 Correct 9 ms 7416 KB Output is correct
3 Correct 11 ms 7416 KB Output is correct
4 Correct 9 ms 7416 KB Output is correct
5 Correct 9 ms 7420 KB Output is correct
6 Correct 9 ms 7416 KB Output is correct
7 Correct 9 ms 7416 KB Output is correct
8 Correct 9 ms 7416 KB Output is correct
9 Correct 10 ms 7416 KB Output is correct
10 Correct 9 ms 7416 KB Output is correct
11 Correct 9 ms 7416 KB Output is correct
12 Correct 10 ms 7416 KB Output is correct
13 Correct 10 ms 7416 KB Output is correct
14 Correct 10 ms 7416 KB Output is correct
15 Correct 10 ms 7416 KB Output is correct
16 Correct 9 ms 7416 KB Output is correct
17 Correct 9 ms 7416 KB Output is correct
18 Correct 10 ms 7544 KB Output is correct
19 Correct 9 ms 7416 KB Output is correct
20 Correct 9 ms 7416 KB Output is correct
21 Correct 9 ms 7416 KB Output is correct
22 Correct 9 ms 7416 KB Output is correct
23 Correct 9 ms 7416 KB Output is correct
24 Correct 10 ms 7416 KB Output is correct
25 Correct 9 ms 7416 KB Output is correct
26 Correct 9 ms 7416 KB Output is correct
27 Correct 9 ms 7416 KB Output is correct
28 Correct 9 ms 7416 KB Output is correct
29 Correct 10 ms 7416 KB Output is correct
30 Incorrect 9 ms 7420 KB Output isn't correct
31 Halted 0 ms 0 KB -