oj.uz

답안 #639568

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
639568 2022-09-10T16:13:26 Z SlavicG 메기 농장 (IOI22_fish) C++17
100 / 100
 810 ms 129968 KB 
#include "fish.h"
#include "bits/stdc++.h"
using namespace std;
using ll = long long;

const ll inf = 1e16;
long long max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w) {
    vector<vector<pair<ll, ll>>> p(n);
    vector<int> len[n];
    for(int i = 0; i < m; ++i) {
        p[x[i]].push_back({y[i], w[i]});
        len[x[i]].push_back(y[i]);
    }
    for(int i = 0; i < n; ++i) {
        sort(p[i].begin(), p[i].end());
        ll sum = 0;
        for(int j = 0; j < p[i].size(); ++j) {
            sum += p[i][j].second;
            p[i][j].second = sum;
        }
        p[i].insert(p[i].begin(), make_pair(-1, 0));
    }
    for(int i = 0; i < n; ++i) {
        len[i].push_back(n);
        len[i].push_back(0);
        sort(len[i].begin(), len[i].end());
        len[i].erase(unique(len[i].begin(), len[i].end()), len[i].end());
    }
    map<ll, ll> dp[n + 1][2];
    for(int i = 0; i <= n; ++i) {
        dp[0][0][i] = dp[0][1][i] = 0;
    }

    //0 - increasing, 1 - decreasing
    for(int i = 1; i < n; ++i) {
        vector<pair<ll, ll>> mx0, mx1;
        for(ll lastlen: len[i - 1]) {
            dp[i][0][0] = max({dp[i][0][0], dp[i - 1][0][lastlen], dp[i - 1][1][lastlen]});
            dp[i][1][0] = max({dp[i][1][0], dp[i - 1][0][lastlen], dp[i - 1][1][lastlen]});

            ll cur = 0;
            if(!mx0.empty()) cur = mx0.back().second;
            auto paiu = upper_bound(p[i - 1].begin(), p[i - 1].end(), make_pair(lastlen - 1, LLONG_MAX)); --paiu;
            cur = max(cur, dp[i - 1][0][lastlen] - paiu->second);
            mx0.push_back({lastlen, cur});
        }

        reverse(len[i - 1].begin(), len[i - 1].end());

        for(ll lastlen: len[i - 1]) {
            ll cur = 0;
            if(!mx1.empty()) cur = mx1.back().second;
            auto paiu = upper_bound(p[i].begin(), p[i].end(), make_pair(lastlen - 1, LLONG_MAX)); --paiu;
            cur = max(cur, dp[i - 1][0][lastlen] + paiu->second);
            cur = max(cur, dp[i - 1][1][lastlen] + paiu->second);
            mx1.push_back({lastlen, cur});
        }
        reverse(mx1.begin(), mx1.end());
        for(ll curlen: len[i]) {
            auto it1 = upper_bound(mx0.begin(), mx0.end(), make_pair(curlen, LLONG_MAX));
            assert(it1 != mx0.begin()); --it1;
            auto it2 = lower_bound(mx1.begin(), mx1.end(), make_pair(curlen, LLONG_MIN));
            assert(it2 != mx1.end());

            auto paiu = upper_bound(p[i - 1].begin(), p[i - 1].end(), make_pair(curlen - 1, LLONG_MAX)); --paiu;
            dp[i][0][curlen] = max(dp[i][0][curlen], paiu->second + it1->second);

            auto paiu2 = upper_bound(p[i].begin(), p[i].end(), make_pair(curlen - 1, LLONG_MAX)); --paiu2;
            dp[i][1][curlen] = max(dp[i][1][curlen], it2->second - paiu2->second);
        }
    }
    ll ans = 0;
    for(int i = 0; i <= n; ++i) {
        ans = max({ans, dp[n - 1][0][i], dp[n - 1][1][i]});
    }
    return ans;
}
/*
5 4
0 2 5
1 1 2
4 4 1
3 3 3
*/

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:17:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         for(int j = 0; j < p[i].size(); ++j) {
      |                        ~~^~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 255 ms 68440 KB Output is correct
2 Correct 299 ms 76464 KB Output is correct
3 Correct 187 ms 70728 KB Output is correct
4 Correct 176 ms 70620 KB Output is correct
5 Correct 810 ms 127552 KB Output is correct
6 Correct 529 ms 129968 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 491 ms 83552 KB Output is correct
3 Correct 523 ms 95108 KB Output is correct
4 Correct 258 ms 68300 KB Output is correct
5 Correct 333 ms 76588 KB Output is correct
6 Correct 1 ms 236 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 212 KB Output is correct
10 Correct 196 ms 70640 KB Output is correct
11 Correct 192 ms 70728 KB Output is correct
12 Correct 362 ms 78460 KB Output is correct
13 Correct 414 ms 88952 KB Output is correct
14 Correct 325 ms 73436 KB Output is correct
15 Correct 346 ms 81608 KB Output is correct
16 Correct 313 ms 73444 KB Output is correct
17 Correct 332 ms 81508 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 243 ms 70684 KB Output is correct
2 Correct 205 ms 70688 KB Output is correct
3 Correct 270 ms 66416 KB Output is correct
4 Correct 218 ms 72416 KB Output is correct
5 Correct 296 ms 77728 KB Output is correct
6 Correct 280 ms 78592 KB Output is correct
7 Correct 286 ms 79088 KB Output is correct
8 Correct 272 ms 79092 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 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 1 ms 468 KB Output is correct
10 Correct 3 ms 852 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 564 KB Output is correct

Subtask #5
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 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 1 ms 468 KB Output is correct
10 Correct 3 ms 852 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 564 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 56 ms 8120 KB Output is correct
18 Correct 59 ms 8772 KB Output is correct
19 Correct 55 ms 8608 KB Output is correct
20 Correct 51 ms 8572 KB Output is correct
21 Correct 46 ms 8504 KB Output is correct
22 Correct 101 ms 16740 KB Output is correct
23 Correct 9 ms 2004 KB Output is correct
24 Correct 35 ms 5588 KB Output is correct
25 Correct 2 ms 596 KB Output is correct
26 Correct 9 ms 1928 KB Output is correct

Subtask #6
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 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 1 ms 468 KB Output is correct
10 Correct 3 ms 852 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 564 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 56 ms 8120 KB Output is correct
18 Correct 59 ms 8772 KB Output is correct
19 Correct 55 ms 8608 KB Output is correct
20 Correct 51 ms 8572 KB Output is correct
21 Correct 46 ms 8504 KB Output is correct
22 Correct 101 ms 16740 KB Output is correct
23 Correct 9 ms 2004 KB Output is correct
24 Correct 35 ms 5588 KB Output is correct
25 Correct 2 ms 596 KB Output is correct
26 Correct 9 ms 1928 KB Output is correct
27 Correct 6 ms 2900 KB Output is correct
28 Correct 320 ms 39356 KB Output is correct
29 Correct 429 ms 55128 KB Output is correct
30 Correct 342 ms 54484 KB Output is correct
31 Correct 330 ms 54552 KB Output is correct
32 Correct 383 ms 54500 KB Output is correct
33 Correct 333 ms 54492 KB Output is correct
34 Correct 354 ms 54512 KB Output is correct
35 Correct 124 ms 22820 KB Output is correct
36 Correct 390 ms 56396 KB Output is correct

Subtask #7
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 243 ms 70684 KB Output is correct
2 Correct 205 ms 70688 KB Output is correct
3 Correct 270 ms 66416 KB Output is correct
4 Correct 218 ms 72416 KB Output is correct
5 Correct 296 ms 77728 KB Output is correct
6 Correct 280 ms 78592 KB Output is correct
7 Correct 286 ms 79088 KB Output is correct
8 Correct 272 ms 79092 KB Output is correct
9 Correct 277 ms 90976 KB Output is correct
10 Correct 166 ms 48416 KB Output is correct
11 Correct 346 ms 97084 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 304 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 177 ms 70632 KB Output is correct
19 Correct 170 ms 70728 KB Output is correct
20 Correct 185 ms 70680 KB Output is correct
21 Correct 185 ms 70716 KB Output is correct
22 Correct 288 ms 89084 KB Output is correct
23 Correct 375 ms 107132 KB Output is correct
24 Correct 387 ms 109820 KB Output is correct

Subtask #8
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 255 ms 68440 KB Output is correct
2 Correct 299 ms 76464 KB Output is correct
3 Correct 187 ms 70728 KB Output is correct
4 Correct 176 ms 70620 KB Output is correct
5 Correct 810 ms 127552 KB Output is correct
6 Correct 529 ms 129968 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 491 ms 83552 KB Output is correct
9 Correct 523 ms 95108 KB Output is correct
10 Correct 258 ms 68300 KB Output is correct
11 Correct 333 ms 76588 KB Output is correct
12 Correct 1 ms 236 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 196 ms 70640 KB Output is correct
17 Correct 192 ms 70728 KB Output is correct
18 Correct 362 ms 78460 KB Output is correct
19 Correct 414 ms 88952 KB Output is correct
20 Correct 325 ms 73436 KB Output is correct
21 Correct 346 ms 81608 KB Output is correct
22 Correct 313 ms 73444 KB Output is correct
23 Correct 332 ms 81508 KB Output is correct
24 Correct 243 ms 70684 KB Output is correct
25 Correct 205 ms 70688 KB Output is correct
26 Correct 270 ms 66416 KB Output is correct
27 Correct 218 ms 72416 KB Output is correct
28 Correct 296 ms 77728 KB Output is correct
29 Correct 280 ms 78592 KB Output is correct
30 Correct 286 ms 79088 KB Output is correct
31 Correct 272 ms 79092 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 3 ms 852 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 2 ms 596 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 564 KB Output is correct
46 Correct 2 ms 468 KB Output is correct
47 Correct 3 ms 724 KB Output is correct
48 Correct 56 ms 8120 KB Output is correct
49 Correct 59 ms 8772 KB Output is correct
50 Correct 55 ms 8608 KB Output is correct
51 Correct 51 ms 8572 KB Output is correct
52 Correct 46 ms 8504 KB Output is correct
53 Correct 101 ms 16740 KB Output is correct
54 Correct 9 ms 2004 KB Output is correct
55 Correct 35 ms 5588 KB Output is correct
56 Correct 2 ms 596 KB Output is correct
57 Correct 9 ms 1928 KB Output is correct
58 Correct 6 ms 2900 KB Output is correct
59 Correct 320 ms 39356 KB Output is correct
60 Correct 429 ms 55128 KB Output is correct
61 Correct 342 ms 54484 KB Output is correct
62 Correct 330 ms 54552 KB Output is correct
63 Correct 383 ms 54500 KB Output is correct
64 Correct 333 ms 54492 KB Output is correct
65 Correct 354 ms 54512 KB Output is correct
66 Correct 124 ms 22820 KB Output is correct
67 Correct 390 ms 56396 KB Output is correct
68 Correct 277 ms 90976 KB Output is correct
69 Correct 166 ms 48416 KB Output is correct
70 Correct 346 ms 97084 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 1 ms 212 KB Output is correct
74 Correct 0 ms 212 KB Output is correct
75 Correct 1 ms 304 KB Output is correct
76 Correct 0 ms 212 KB Output is correct
77 Correct 177 ms 70632 KB Output is correct
78 Correct 170 ms 70728 KB Output is correct
79 Correct 185 ms 70680 KB Output is correct
80 Correct 185 ms 70716 KB Output is correct
81 Correct 288 ms 89084 KB Output is correct
82 Correct 375 ms 107132 KB Output is correct
83 Correct 387 ms 109820 KB Output is correct
84 Correct 714 ms 119456 KB Output is correct
85 Correct 737 ms 125012 KB Output is correct
86 Correct 464 ms 118160 KB Output is correct
87 Correct 545 ms 124108 KB Output is correct
88 Correct 0 ms 212 KB Output is correct
89 Correct 534 ms 125028 KB Output is correct
90 Correct 454 ms 121756 KB Output is correct
91 Correct 477 ms 121676 KB Output is correct