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답안 #994329

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
994329 2024-06-07T11:21:26 Z thinknoexit 메기 농장 (IOI22_fish) C++17
100 / 100
 132 ms 42832 KB 
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
vector<pair<int, int>> pos[100100];
struct DP {
    ll in, de;
    DP() {
        in = de = 0;
    }
} dp[1001000];
bool ___[100100];
int w[1001000];
int n, m;
ll max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    n = N, m = M;
    for (int i = 0;i < m;i++) {
        w[i + 1] = W[i];
        pos[X[i] + 1].push_back({ Y[i] + 1, i + 1 });
        if (Y[i] + 1 == 1) ___[X[i] + 1] = 1;
    }
    int idx = m, p;
    ll mx, sum;
    for (int i = 1;i <= n;i++) {
        if (!___[i]) pos[i].push_back({ 1, ++idx });
        pos[i].push_back({ n + 1, ++idx });
        sort(pos[i].begin(), pos[i].end());
        if (i == 1) continue;
        // h[i-1] < h[i]
        {
            p = 0;
            mx = 0;
            for (int j = 0;j < (int)pos[i].size();j++) {
                while (p < (int)pos[i - 1].size() && pos[i - 1][p].first <= pos[i][j].first - 1) {
                    int prev = pos[i - 1][p++].second;
                    mx = max(mx, dp[prev].in) + w[prev];
                }
                dp[pos[i][j].second].in = mx;
            }
        }
        // h[i-1] >= h[i]
        {
            p = pos[i - 1].size() - 1;
            mx = 0;
            for (int j = pos[i].size() - 1;j >= 0;j--) {
                while (p >= 0 && pos[i - 1][p].first > pos[i][j].first) {
                    int prev = pos[i - 1][p--].second;
                    mx = max({ mx, dp[prev].in, dp[prev].de });
                }
                mx += w[pos[i][j].second];
                while (p >= 0 && pos[i - 1][p].first == pos[i][j].first) {
                    int prev = pos[i - 1][p--].second;
                    mx = max({ mx, dp[prev].in, dp[prev].de });
                }
                dp[pos[i][j].second].de = mx;
            }
        }
        // in -> de, de -> in
        if (i >= 3) {
            // h[i-2] <= h[i]
            {
                int mid = 0;
                p = 0;
                mx = 0, sum = 0;
                for (int j = 0;j < (int)pos[i].size();j++) {
                    while (p < (int)pos[i - 2].size() && pos[i - 2][p].first <= pos[i][j].first) {
                        int prev = pos[i - 2][p++].second;
                        mx = max({ mx ,dp[prev].in, dp[prev].de });
                    }
                    while (mid < (int)pos[i - 1].size() && pos[i - 1][mid].first <= pos[i][j].first - 1) {
                        sum += w[pos[i - 1][mid++].second];
                    }
                    dp[pos[i][j].second].in = max(dp[pos[i][j].second].in, mx + sum);
                }
            }
            // h[i-2] >= h[i]
            {
                int mid = pos[i - 1].size() - 1;
                mx = 0, sum = 0;
                for (int j = 0;j <= mid;j++) sum += w[pos[i - 1][j].second];
                p = pos[i - 2].size() - 1;
                for (int j = pos[i].size() - 1;j >= 0;j--) {
                    while (p >= 0 && pos[i - 2][p].first >= pos[i][j].first) {
                        int prev = pos[i - 2][p].second;
                        int now = pos[i - 2][p].first - 1;
                        while (mid >= 0 && pos[i - 1][mid].first > now) {
                            sum -= w[pos[i - 1][mid--].second];
                        }
                        mx = max({ mx, dp[prev].in + sum, dp[prev].de + sum });
                        p--;
                    }
                    dp[pos[i][j].second].in = max(dp[pos[i][j].second].in, mx);
                }
            }
        }
    }
    ll ans = 0;
    for (int i = 1;i <= idx;i++) {
        ans = max(ans, dp[i].in);
        ans = max(ans, dp[i].de);
    }
    return ans;
}

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 27592 KB Output is correct
2 Correct 42 ms 28616 KB Output is correct
3 Correct 13 ms 23384 KB Output is correct
4 Correct 15 ms 23132 KB Output is correct
5 Correct 99 ms 34880 KB Output is correct
6 Correct 100 ms 36176 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 20060 KB Output is correct
2 Correct 57 ms 30252 KB Output is correct
3 Correct 73 ms 35128 KB Output is correct
4 Correct 33 ms 29124 KB Output is correct
5 Correct 41 ms 30384 KB Output is correct
6 Correct 4 ms 20060 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct
8 Correct 3 ms 20060 KB Output is correct
9 Correct 3 ms 20256 KB Output is correct
10 Correct 13 ms 23388 KB Output is correct
11 Correct 12 ms 23388 KB Output is correct
12 Correct 33 ms 29040 KB Output is correct
13 Correct 41 ms 30312 KB Output is correct
14 Correct 35 ms 29020 KB Output is correct
15 Correct 37 ms 29896 KB Output is correct
16 Correct 42 ms 29124 KB Output is correct
17 Correct 39 ms 29892 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23132 KB Output is correct
2 Correct 12 ms 23388 KB Output is correct
3 Correct 22 ms 26492 KB Output is correct
4 Correct 20 ms 24156 KB Output is correct
5 Correct 35 ms 27964 KB Output is correct
6 Correct 32 ms 27740 KB Output is correct
7 Correct 38 ms 27728 KB Output is correct
8 Correct 32 ms 27728 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 4 ms 20060 KB Output is correct
4 Correct 5 ms 20060 KB Output is correct
5 Correct 3 ms 20144 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20212 KB Output is correct
8 Correct 3 ms 20056 KB Output is correct
9 Correct 3 ms 20060 KB Output is correct
10 Correct 4 ms 20316 KB Output is correct
11 Correct 4 ms 20060 KB Output is correct
12 Correct 4 ms 20056 KB Output is correct
13 Correct 3 ms 20060 KB Output is correct
14 Correct 4 ms 20240 KB Output is correct

Subtask #5
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 4 ms 20060 KB Output is correct
4 Correct 5 ms 20060 KB Output is correct
5 Correct 3 ms 20144 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20212 KB Output is correct
8 Correct 3 ms 20056 KB Output is correct
9 Correct 3 ms 20060 KB Output is correct
10 Correct 4 ms 20316 KB Output is correct
11 Correct 4 ms 20060 KB Output is correct
12 Correct 4 ms 20056 KB Output is correct
13 Correct 3 ms 20060 KB Output is correct
14 Correct 4 ms 20240 KB Output is correct
15 Correct 6 ms 20060 KB Output is correct
16 Correct 4 ms 20316 KB Output is correct
17 Correct 19 ms 24732 KB Output is correct
18 Correct 17 ms 24932 KB Output is correct
19 Correct 16 ms 24924 KB Output is correct
20 Correct 26 ms 25004 KB Output is correct
21 Correct 26 ms 24920 KB Output is correct
22 Correct 33 ms 27316 KB Output is correct
23 Correct 7 ms 20568 KB Output is correct
24 Correct 21 ms 21852 KB Output is correct
25 Correct 4 ms 20316 KB Output is correct
26 Correct 5 ms 20572 KB Output is correct

Subtask #6
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 20056 KB Output is correct
2 Correct 3 ms 20060 KB Output is correct
3 Correct 4 ms 20060 KB Output is correct
4 Correct 5 ms 20060 KB Output is correct
5 Correct 3 ms 20144 KB Output is correct
6 Correct 3 ms 20060 KB Output is correct
7 Correct 3 ms 20212 KB Output is correct
8 Correct 3 ms 20056 KB Output is correct
9 Correct 3 ms 20060 KB Output is correct
10 Correct 4 ms 20316 KB Output is correct
11 Correct 4 ms 20060 KB Output is correct
12 Correct 4 ms 20056 KB Output is correct
13 Correct 3 ms 20060 KB Output is correct
14 Correct 4 ms 20240 KB Output is correct
15 Correct 6 ms 20060 KB Output is correct
16 Correct 4 ms 20316 KB Output is correct
17 Correct 19 ms 24732 KB Output is correct
18 Correct 17 ms 24932 KB Output is correct
19 Correct 16 ms 24924 KB Output is correct
20 Correct 26 ms 25004 KB Output is correct
21 Correct 26 ms 24920 KB Output is correct
22 Correct 33 ms 27316 KB Output is correct
23 Correct 7 ms 20568 KB Output is correct
24 Correct 21 ms 21852 KB Output is correct
25 Correct 4 ms 20316 KB Output is correct
26 Correct 5 ms 20572 KB Output is correct
27 Correct 5 ms 20572 KB Output is correct
28 Correct 60 ms 34424 KB Output is correct
29 Correct 89 ms 38740 KB Output is correct
30 Correct 91 ms 38464 KB Output is correct
31 Correct 120 ms 38344 KB Output is correct
32 Correct 75 ms 39504 KB Output is correct
33 Correct 120 ms 38480 KB Output is correct
34 Correct 91 ms 38348 KB Output is correct
35 Correct 35 ms 28656 KB Output is correct
36 Correct 88 ms 39244 KB Output is correct

Subtask #7
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23132 KB Output is correct
2 Correct 12 ms 23388 KB Output is correct
3 Correct 22 ms 26492 KB Output is correct
4 Correct 20 ms 24156 KB Output is correct
5 Correct 35 ms 27964 KB Output is correct
6 Correct 32 ms 27740 KB Output is correct
7 Correct 38 ms 27728 KB Output is correct
8 Correct 32 ms 27728 KB Output is correct
9 Correct 43 ms 30300 KB Output is correct
10 Correct 32 ms 27472 KB Output is correct
11 Correct 70 ms 32588 KB Output is correct
12 Correct 3 ms 20060 KB Output is correct
13 Correct 3 ms 20236 KB Output is correct
14 Correct 3 ms 20312 KB Output is correct
15 Correct 4 ms 20060 KB Output is correct
16 Correct 3 ms 20060 KB Output is correct
17 Correct 3 ms 20060 KB Output is correct
18 Correct 22 ms 23392 KB Output is correct
19 Correct 12 ms 23388 KB Output is correct
20 Correct 13 ms 23224 KB Output is correct
21 Correct 12 ms 23132 KB Output is correct
22 Correct 45 ms 29468 KB Output is correct
23 Correct 69 ms 32592 KB Output is correct
24 Correct 70 ms 32592 KB Output is correct

Subtask #8
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 27592 KB Output is correct
2 Correct 42 ms 28616 KB Output is correct
3 Correct 13 ms 23384 KB Output is correct
4 Correct 15 ms 23132 KB Output is correct
5 Correct 99 ms 34880 KB Output is correct
6 Correct 100 ms 36176 KB Output is correct
7 Correct 3 ms 20060 KB Output is correct
8 Correct 57 ms 30252 KB Output is correct
9 Correct 73 ms 35128 KB Output is correct
10 Correct 33 ms 29124 KB Output is correct
11 Correct 41 ms 30384 KB Output is correct
12 Correct 4 ms 20060 KB Output is correct
13 Correct 3 ms 20060 KB Output is correct
14 Correct 3 ms 20060 KB Output is correct
15 Correct 3 ms 20256 KB Output is correct
16 Correct 13 ms 23388 KB Output is correct
17 Correct 12 ms 23388 KB Output is correct
18 Correct 33 ms 29040 KB Output is correct
19 Correct 41 ms 30312 KB Output is correct
20 Correct 35 ms 29020 KB Output is correct
21 Correct 37 ms 29896 KB Output is correct
22 Correct 42 ms 29124 KB Output is correct
23 Correct 39 ms 29892 KB Output is correct
24 Correct 13 ms 23132 KB Output is correct
25 Correct 12 ms 23388 KB Output is correct
26 Correct 22 ms 26492 KB Output is correct
27 Correct 20 ms 24156 KB Output is correct
28 Correct 35 ms 27964 KB Output is correct
29 Correct 32 ms 27740 KB Output is correct
30 Correct 38 ms 27728 KB Output is correct
31 Correct 32 ms 27728 KB Output is correct
32 Correct 4 ms 20056 KB Output is correct
33 Correct 3 ms 20060 KB Output is correct
34 Correct 4 ms 20060 KB Output is correct
35 Correct 5 ms 20060 KB Output is correct
36 Correct 3 ms 20144 KB Output is correct
37 Correct 3 ms 20060 KB Output is correct
38 Correct 3 ms 20212 KB Output is correct
39 Correct 3 ms 20056 KB Output is correct
40 Correct 3 ms 20060 KB Output is correct
41 Correct 4 ms 20316 KB Output is correct
42 Correct 4 ms 20060 KB Output is correct
43 Correct 4 ms 20056 KB Output is correct
44 Correct 3 ms 20060 KB Output is correct
45 Correct 4 ms 20240 KB Output is correct
46 Correct 6 ms 20060 KB Output is correct
47 Correct 4 ms 20316 KB Output is correct
48 Correct 19 ms 24732 KB Output is correct
49 Correct 17 ms 24932 KB Output is correct
50 Correct 16 ms 24924 KB Output is correct
51 Correct 26 ms 25004 KB Output is correct
52 Correct 26 ms 24920 KB Output is correct
53 Correct 33 ms 27316 KB Output is correct
54 Correct 7 ms 20568 KB Output is correct
55 Correct 21 ms 21852 KB Output is correct
56 Correct 4 ms 20316 KB Output is correct
57 Correct 5 ms 20572 KB Output is correct
58 Correct 5 ms 20572 KB Output is correct
59 Correct 60 ms 34424 KB Output is correct
60 Correct 89 ms 38740 KB Output is correct
61 Correct 91 ms 38464 KB Output is correct
62 Correct 120 ms 38344 KB Output is correct
63 Correct 75 ms 39504 KB Output is correct
64 Correct 120 ms 38480 KB Output is correct
65 Correct 91 ms 38348 KB Output is correct
66 Correct 35 ms 28656 KB Output is correct
67 Correct 88 ms 39244 KB Output is correct
68 Correct 43 ms 30300 KB Output is correct
69 Correct 32 ms 27472 KB Output is correct
70 Correct 70 ms 32588 KB Output is correct
71 Correct 3 ms 20060 KB Output is correct
72 Correct 3 ms 20236 KB Output is correct
73 Correct 3 ms 20312 KB Output is correct
74 Correct 4 ms 20060 KB Output is correct
75 Correct 3 ms 20060 KB Output is correct
76 Correct 3 ms 20060 KB Output is correct
77 Correct 22 ms 23392 KB Output is correct
78 Correct 12 ms 23388 KB Output is correct
79 Correct 13 ms 23224 KB Output is correct
80 Correct 12 ms 23132 KB Output is correct
81 Correct 45 ms 29468 KB Output is correct
82 Correct 69 ms 32592 KB Output is correct
83 Correct 70 ms 32592 KB Output is correct
84 Correct 132 ms 41012 KB Output is correct
85 Correct 102 ms 40736 KB Output is correct
86 Correct 112 ms 42680 KB Output is correct
87 Correct 107 ms 42832 KB Output is correct
88 Correct 4 ms 20060 KB Output is correct
89 Correct 130 ms 42828 KB Output is correct
90 Correct 102 ms 41164 KB Output is correct
91 Correct 98 ms 41160 KB Output is correct