oj.uz

Submission #908624

# Submission time Handle Problem Language Result Execution time Memory
908624 2024-01-16T15:33:24 Z vjudge1 Catfish Farm (IOI22_fish) C++17
100 / 100
 399 ms 57500 KB 
#include "fish.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)


long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
  vector<vl> fishes(N+1);
  vector<vl> states(N+1, {0});
  // initializing states
  F(i, 0, M) {
    ++Y[i];
    F(j, max(X[i]-1, 0), min(X[i]+1, N-1) + 1) 
        states[j].push_back(Y[i]);
  }

    // rank reduction and correction, i suppose
  F(i, 0, N+1) {
    sort(A(states[i]));
    states[i].erase(unique(A(states[i])), states[i].end());
    fishes[i].resize(states[i].size());
  }

  // 
  F(i, 0, M) {
    int x = X[i];
    int y = lower_bound(A(states[x]), Y[i]) - states[x].begin();
    fishes[x][y] += W[i];
  }

  vector<vl> dp_up(N+1), dp_down(N+1);
  F(i, 0, N+1) {
    int sz = states[i].size();
    dp_up[i].assign(sz, 0);
    dp_down[i].assign(sz, 0);

    if (i > 1) {
        ll best = max(dp_up[i-2][0], dp_down[i-2][0]), sum = 0;
        for (int j = 0, lef = 0, mid = 0; j < sz; ++j) {
            while (lef+1 < (int)states[i-2].size() && states[i-2][lef+1] <= states[i][j]) {
            ++lef;
            while (mid+1 < (int)states[i-1].size() && states[i-1][mid+1] <= states[i-2][lef]) {
                ++mid;
                best += fishes[i-1][mid];
                sum += fishes[i-1][mid];
            }
            best = max(best, max(dp_up[i-2][lef], dp_down[i-2][lef]) + sum);
            }
            dp_up[i][j] = max(dp_up[i][j], best);
        }
    }
    if (i > 1) {
        ll best = 0, sum = accumulate(fishes[i-1].begin(), fishes[i-1].end(), 0LL);
        for (int j = sz-1, lef = states[i-2].size(), mid = states[i-1].size(); j >= 0; --j) {
            while (lef > 0 && states[i-2][lef-1] >= states[i][j]) {
            --lef;
            while (mid > 0 && states[i-1][mid-1] > states[i-2][lef]) {
                --mid;
                sum -= fishes[i-1][mid];
            }
            best = max(best, max(dp_up[i-2][lef], dp_down[i-2][lef]) + sum);
            }
            dp_up[i][j] = max(dp_up[i][j], best);
        }
    }   

    if (i > 0) {
        ll best = dp_up[i-1][0], sum = 0;
        for (int j = 0, lef = 0; j < sz; ++j) {
            while (lef+1 < (int)states[i-1].size() && states[i-1][lef+1] <= states[i][j]) {
            ++lef;
            best += fishes[i-1][lef];
            best = max(best, dp_up[i-1][lef]);
            }
            dp_up[i][j] = max(dp_up[i][j], best);
        }
    }
    
    if (i > 0) {
        ll best = 0, sum = accumulate(fishes[i].begin(), fishes[i].end(), 0LL);
        for (int j = sz-1, lef = states[i-1].size(); j >= 0; --j) {
            while (lef > 0 && states[i-1][lef-1] >= states[i][j]) {
            --lef;
            best = max(best, max(dp_down[i-1][lef], dp_up[i-1][lef]) + sum);
            }
            dp_down[i][j] = max(dp_down[i][j], best-sum);
            sum -= fishes[i][j];
        }
    }
  }

  return max(dp_up[N][0], dp_down[N][0]);
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:87:34: warning: unused variable 'sum' [-Wunused-variable]
   87 |         ll best = dp_up[i-1][0], sum = 0;
      |                                  ^~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 27020 KB Output is correct
2 Correct 83 ms 30856 KB Output is correct
3 Correct 29 ms 22312 KB Output is correct
4 Correct 28 ms 22308 KB Output is correct
5 Correct 239 ms 57500 KB Output is correct
6 Correct 357 ms 56152 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 136 ms 33140 KB Output is correct
3 Correct 148 ms 38016 KB Output is correct
4 Correct 69 ms 26988 KB Output is correct
5 Correct 84 ms 30844 KB Output is correct
6 Correct 0 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 29 ms 22104 KB Output is correct
11 Correct 29 ms 22108 KB Output is correct
12 Correct 80 ms 29488 KB Output is correct
13 Correct 94 ms 34016 KB Output is correct
14 Correct 76 ms 28216 KB Output is correct
15 Correct 80 ms 29636 KB Output is correct
16 Correct 76 ms 28220 KB Output is correct
17 Correct 84 ms 31284 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 22364 KB Output is correct
2 Correct 30 ms 22296 KB Output is correct
3 Correct 55 ms 22348 KB Output is correct
4 Correct 54 ms 23632 KB Output is correct
5 Correct 89 ms 26568 KB Output is correct
6 Correct 88 ms 26692 KB Output is correct
7 Correct 109 ms 26636 KB Output is correct
8 Correct 91 ms 26700 KB Output is correct

Subtask #4
14.0 / 14.0

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

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 25 ms 4436 KB Output is correct
18 Correct 23 ms 3924 KB Output is correct
19 Correct 26 ms 3932 KB Output is correct
20 Correct 28 ms 3852 KB Output is correct
21 Correct 21 ms 3676 KB Output is correct
22 Correct 44 ms 7140 KB Output is correct
23 Correct 6 ms 1372 KB Output is correct
24 Correct 20 ms 3920 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 5 ms 1372 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 25 ms 4436 KB Output is correct
18 Correct 23 ms 3924 KB Output is correct
19 Correct 26 ms 3932 KB Output is correct
20 Correct 28 ms 3852 KB Output is correct
21 Correct 21 ms 3676 KB Output is correct
22 Correct 44 ms 7140 KB Output is correct
23 Correct 6 ms 1372 KB Output is correct
24 Correct 20 ms 3920 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 5 ms 1372 KB Output is correct
27 Correct 3 ms 1112 KB Output is correct
28 Correct 117 ms 17808 KB Output is correct
29 Correct 183 ms 28244 KB Output is correct
30 Correct 223 ms 40052 KB Output is correct
31 Correct 216 ms 40016 KB Output is correct
32 Correct 159 ms 23636 KB Output is correct
33 Correct 227 ms 40516 KB Output is correct
34 Correct 231 ms 40528 KB Output is correct
35 Correct 68 ms 13396 KB Output is correct
36 Correct 205 ms 34668 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 22364 KB Output is correct
2 Correct 30 ms 22296 KB Output is correct
3 Correct 55 ms 22348 KB Output is correct
4 Correct 54 ms 23632 KB Output is correct
5 Correct 89 ms 26568 KB Output is correct
6 Correct 88 ms 26692 KB Output is correct
7 Correct 109 ms 26636 KB Output is correct
8 Correct 91 ms 26700 KB Output is correct
9 Correct 101 ms 31816 KB Output is correct
10 Correct 59 ms 16216 KB Output is correct
11 Correct 155 ms 32268 KB Output is correct
12 Correct 0 ms 344 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 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 29 ms 22316 KB Output is correct
19 Correct 29 ms 22268 KB Output is correct
20 Correct 28 ms 22360 KB Output is correct
21 Correct 30 ms 22104 KB Output is correct
22 Correct 134 ms 31108 KB Output is correct
23 Correct 196 ms 37456 KB Output is correct
24 Correct 200 ms 38224 KB Output is correct

Subtask #8
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 27020 KB Output is correct
2 Correct 83 ms 30856 KB Output is correct
3 Correct 29 ms 22312 KB Output is correct
4 Correct 28 ms 22308 KB Output is correct
5 Correct 239 ms 57500 KB Output is correct
6 Correct 357 ms 56152 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 136 ms 33140 KB Output is correct
9 Correct 148 ms 38016 KB Output is correct
10 Correct 69 ms 26988 KB Output is correct
11 Correct 84 ms 30844 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 29 ms 22104 KB Output is correct
17 Correct 29 ms 22108 KB Output is correct
18 Correct 80 ms 29488 KB Output is correct
19 Correct 94 ms 34016 KB Output is correct
20 Correct 76 ms 28216 KB Output is correct
21 Correct 80 ms 29636 KB Output is correct
22 Correct 76 ms 28220 KB Output is correct
23 Correct 84 ms 31284 KB Output is correct
24 Correct 28 ms 22364 KB Output is correct
25 Correct 30 ms 22296 KB Output is correct
26 Correct 55 ms 22348 KB Output is correct
27 Correct 54 ms 23632 KB Output is correct
28 Correct 89 ms 26568 KB Output is correct
29 Correct 88 ms 26692 KB Output is correct
30 Correct 109 ms 26636 KB Output is correct
31 Correct 91 ms 26700 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 2 ms 604 KB Output is correct
42 Correct 2 ms 344 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 2 ms 348 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 1 ms 604 KB Output is correct
48 Correct 25 ms 4436 KB Output is correct
49 Correct 23 ms 3924 KB Output is correct
50 Correct 26 ms 3932 KB Output is correct
51 Correct 28 ms 3852 KB Output is correct
52 Correct 21 ms 3676 KB Output is correct
53 Correct 44 ms 7140 KB Output is correct
54 Correct 6 ms 1372 KB Output is correct
55 Correct 20 ms 3920 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 5 ms 1372 KB Output is correct
58 Correct 3 ms 1112 KB Output is correct
59 Correct 117 ms 17808 KB Output is correct
60 Correct 183 ms 28244 KB Output is correct
61 Correct 223 ms 40052 KB Output is correct
62 Correct 216 ms 40016 KB Output is correct
63 Correct 159 ms 23636 KB Output is correct
64 Correct 227 ms 40516 KB Output is correct
65 Correct 231 ms 40528 KB Output is correct
66 Correct 68 ms 13396 KB Output is correct
67 Correct 205 ms 34668 KB Output is correct
68 Correct 101 ms 31816 KB Output is correct
69 Correct 59 ms 16216 KB Output is correct
70 Correct 155 ms 32268 KB Output is correct
71 Correct 0 ms 344 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 1 ms 348 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 29 ms 22316 KB Output is correct
78 Correct 29 ms 22268 KB Output is correct
79 Correct 28 ms 22360 KB Output is correct
80 Correct 30 ms 22104 KB Output is correct
81 Correct 134 ms 31108 KB Output is correct
82 Correct 196 ms 37456 KB Output is correct
83 Correct 200 ms 38224 KB Output is correct
84 Correct 259 ms 52912 KB Output is correct
85 Correct 264 ms 55032 KB Output is correct
86 Correct 342 ms 54124 KB Output is correct
87 Correct 340 ms 56168 KB Output is correct
88 Correct 1 ms 344 KB Output is correct
89 Correct 399 ms 56168 KB Output is correct
90 Correct 255 ms 53084 KB Output is correct
91 Correct 193 ms 47440 KB Output is correct