oj.uz

Submission #908666

# Submission time Handle Problem Language Result Execution time Memory
908666 2024-01-16T16:07:37 Z vjudge1 Catfish Farm (IOI22_fish) C++17
100 / 100
 177 ms 33092 KB 
#include <bits/stdc++.h>
#pragma GCC target ("avx2")
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")

#include<bits/stdc++.h>
#include<math.h>
using namespace std;

typedef long long int ll;
typedef long double ld;
typedef pair<ll, ll> pl;
typedef vector<ll> vl;
#define FD(i, r, l) for(ll i = r; i > (l); --i)

#define K first
#define V second
#define G(x) ll x; cin >> x;
#define GD(x) ld x; cin >> x;
#define GS(s) string s; cin >> s;
#define EX(x) { cout << x << '\n'; exit(0); }
#define A(a) (a).begin(), (a).end()
#define F(i, l, r) for (ll i = l; i < (r); ++i)

enum {
    UP = 0,
    DOWN = 1
};

ll max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
  vector<vector<pair<int, int>>> fishes(N);

  F(i, 0, M) fishes[X[i]].push_back(make_pair(Y[i], i));

  ll largest = 0;
  
  vector<pl> up, down; // stores [ypos, dpvalue] of prev state

  vector<vl> dp(M, vl(2, -1e18)); // dp[fish index][type]

  F(x, 0, N) {
    // computes dp[down] for layer 

    if (x > 0) { // w/o this check, we allow placing piers to index -1 which is no bueno
        sort(A(fishes[x]), greater());
      ll max_down = 0, prev = -1e18;
      for (auto [y, i]: fishes[x]) {
        while (down.size() > 0 && down.back().K > y) {
            max_down = max(max_down, down.back().V);
            down.pop_back();
        }

        ll &ret = dp[i][DOWN];
        ret = largest + W[i];
        ret = max(ret, max_down + W[i]);
        ret = max(ret, prev + W[i]);
        prev = max(prev, dp[i][DOWN]);
      }
    }

    if (x >= 1) for (auto [y, i] : fishes[x - 1]) {
        largest = max(largest, dp[i][DOWN]);
    }

    // computes dp[up] for layer; ig implciitly we can already think about largest as the previous dpdown??? 
    {
        sort(A(fishes[x]));
        ll max_up = 0, prev = -1e18;
        for (auto [y, i]: fishes[x]) {
            while (up.size() > 0 && up.back().K < y) {
                max_up = max(max_up, up.back().V);
                up.pop_back();
            }

            ll &ret = dp[i][UP];
            ret = largest + W[i];
            ret = max(ret, max_up + W[i]);
            ret = max(ret, prev + W[i]);
            prev = max(prev, dp[i][UP]);
        }
    }

    if (x >= 1) for (auto [y, i] : fishes[x - 1]) {
        largest = max(largest, dp[i][UP]);
    }

    down.clear();
    for (auto [y, i]: fishes[x]) down.emplace_back(y, dp[i][DOWN]);
    up.clear();
    for (auto [y, i]: fishes[x]) up.emplace_back(y, dp[i][UP]);
    reverse(A(up));
  }

  ll answer = 0;
  F(i, 0, M) {
    answer = max(answer, dp[i][DOWN]);
    if (X[i] + 1 < N) answer = max(answer, dp[i][UP]);
  }

  return answer;
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 13720 KB Output is correct
2 Correct 50 ms 15940 KB Output is correct
3 Correct 2 ms 2652 KB Output is correct
4 Correct 2 ms 2652 KB Output is correct
5 Correct 152 ms 33092 KB Output is correct
6 Correct 149 ms 30288 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 75 ms 20800 KB Output is correct
3 Correct 100 ms 24572 KB Output is correct
4 Correct 36 ms 13640 KB Output is correct
5 Correct 45 ms 15940 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 2 ms 2652 KB Output is correct
11 Correct 2 ms 2904 KB Output is correct
12 Correct 37 ms 13904 KB Output is correct
13 Correct 46 ms 15892 KB Output is correct
14 Correct 35 ms 11484 KB Output is correct
15 Correct 40 ms 12748 KB Output is correct
16 Correct 48 ms 11628 KB Output is correct
17 Correct 43 ms 12704 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2648 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Correct 27 ms 8284 KB Output is correct
4 Correct 17 ms 6744 KB Output is correct
5 Correct 46 ms 13640 KB Output is correct
6 Correct 43 ms 13912 KB Output is correct
7 Correct 46 ms 13648 KB Output is correct
8 Correct 48 ms 13648 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 18 ms 4188 KB Output is correct
18 Correct 17 ms 4444 KB Output is correct
19 Correct 16 ms 4444 KB Output is correct
20 Correct 16 ms 4556 KB Output is correct
21 Correct 16 ms 4444 KB Output is correct
22 Correct 32 ms 8664 KB Output is correct
23 Correct 4 ms 1116 KB Output is correct
24 Correct 12 ms 2908 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 4 ms 1112 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 18 ms 4188 KB Output is correct
18 Correct 17 ms 4444 KB Output is correct
19 Correct 16 ms 4444 KB Output is correct
20 Correct 16 ms 4556 KB Output is correct
21 Correct 16 ms 4444 KB Output is correct
22 Correct 32 ms 8664 KB Output is correct
23 Correct 4 ms 1116 KB Output is correct
24 Correct 12 ms 2908 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 4 ms 1112 KB Output is correct
27 Correct 1 ms 604 KB Output is correct
28 Correct 92 ms 20116 KB Output is correct
29 Correct 123 ms 27476 KB Output is correct
30 Correct 125 ms 26976 KB Output is correct
31 Correct 137 ms 26988 KB Output is correct
32 Correct 119 ms 28264 KB Output is correct
33 Correct 130 ms 26964 KB Output is correct
34 Correct 127 ms 26984 KB Output is correct
35 Correct 45 ms 10836 KB Output is correct
36 Correct 130 ms 27728 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2648 KB Output is correct
2 Correct 2 ms 2652 KB Output is correct
3 Correct 27 ms 8284 KB Output is correct
4 Correct 17 ms 6744 KB Output is correct
5 Correct 46 ms 13640 KB Output is correct
6 Correct 43 ms 13912 KB Output is correct
7 Correct 46 ms 13648 KB Output is correct
8 Correct 48 ms 13648 KB Output is correct
9 Correct 50 ms 13736 KB Output is correct
10 Correct 41 ms 11084 KB Output is correct
11 Correct 113 ms 21332 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 424 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 2 ms 2652 KB Output is correct
19 Correct 2 ms 2648 KB Output is correct
20 Correct 2 ms 2648 KB Output is correct
21 Correct 2 ms 2652 KB Output is correct
22 Correct 44 ms 12628 KB Output is correct
23 Correct 99 ms 21332 KB Output is correct
24 Correct 98 ms 21468 KB Output is correct

Subtask #8
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 13720 KB Output is correct
2 Correct 50 ms 15940 KB Output is correct
3 Correct 2 ms 2652 KB Output is correct
4 Correct 2 ms 2652 KB Output is correct
5 Correct 152 ms 33092 KB Output is correct
6 Correct 149 ms 30288 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 75 ms 20800 KB Output is correct
9 Correct 100 ms 24572 KB Output is correct
10 Correct 36 ms 13640 KB Output is correct
11 Correct 45 ms 15940 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 2652 KB Output is correct
17 Correct 2 ms 2904 KB Output is correct
18 Correct 37 ms 13904 KB Output is correct
19 Correct 46 ms 15892 KB Output is correct
20 Correct 35 ms 11484 KB Output is correct
21 Correct 40 ms 12748 KB Output is correct
22 Correct 48 ms 11628 KB Output is correct
23 Correct 43 ms 12704 KB Output is correct
24 Correct 2 ms 2648 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 27 ms 8284 KB Output is correct
27 Correct 17 ms 6744 KB Output is correct
28 Correct 46 ms 13640 KB Output is correct
29 Correct 43 ms 13912 KB Output is correct
30 Correct 46 ms 13648 KB Output is correct
31 Correct 48 ms 13648 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 604 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 344 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 604 KB Output is correct
48 Correct 18 ms 4188 KB Output is correct
49 Correct 17 ms 4444 KB Output is correct
50 Correct 16 ms 4444 KB Output is correct
51 Correct 16 ms 4556 KB Output is correct
52 Correct 16 ms 4444 KB Output is correct
53 Correct 32 ms 8664 KB Output is correct
54 Correct 4 ms 1116 KB Output is correct
55 Correct 12 ms 2908 KB Output is correct
56 Correct 1 ms 344 KB Output is correct
57 Correct 4 ms 1112 KB Output is correct
58 Correct 1 ms 604 KB Output is correct
59 Correct 92 ms 20116 KB Output is correct
60 Correct 123 ms 27476 KB Output is correct
61 Correct 125 ms 26976 KB Output is correct
62 Correct 137 ms 26988 KB Output is correct
63 Correct 119 ms 28264 KB Output is correct
64 Correct 130 ms 26964 KB Output is correct
65 Correct 127 ms 26984 KB Output is correct
66 Correct 45 ms 10836 KB Output is correct
67 Correct 130 ms 27728 KB Output is correct
68 Correct 50 ms 13736 KB Output is correct
69 Correct 41 ms 11084 KB Output is correct
70 Correct 113 ms 21332 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 1 ms 348 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 0 ms 424 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 2 ms 2652 KB Output is correct
78 Correct 2 ms 2648 KB Output is correct
79 Correct 2 ms 2648 KB Output is correct
80 Correct 2 ms 2652 KB Output is correct
81 Correct 44 ms 12628 KB Output is correct
82 Correct 99 ms 21332 KB Output is correct
83 Correct 98 ms 21468 KB Output is correct
84 Correct 143 ms 29760 KB Output is correct
85 Correct 138 ms 29804 KB Output is correct
86 Correct 176 ms 30224 KB Output is correct
87 Correct 170 ms 30584 KB Output is correct
88 Correct 1 ms 344 KB Output is correct
89 Correct 177 ms 30804 KB Output is correct
90 Correct 152 ms 30036 KB Output is correct
91 Correct 153 ms 29940 KB Output is correct