oj.uz

답안 #659603

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
659603 2022-11-18T17:49:38 Z peijar 메기 농장 (IOI22_fish) C++17
37 / 100
 1000 ms 27988 KB 
#include "fish.h"
#include <bits/stdc++.h>
#define int long long
using namespace std;

const int INF = 1e18;

int max_weights(signed N, signed M, vector<signed> X, vector<signed> Y,
                vector<signed> W) {
  vector<vector<pair<int, int>>> onCol(N);
  vector<vector<int>> prefSum(N);
  for (int i = 0; i < M; ++i)
    onCol[X[i]].emplace_back(Y[i] + 1, W[i]);
  for (int i = 0; i < N; ++i) {
    sort(onCol[i].begin(), onCol[i].end());
    prefSum[i].resize(onCol[i].size() + 1);
    for (int j = 0; j < (int)onCol[i].size(); ++j)
      prefSum[i][j + 1] = prefSum[i][j] + onCol[i][j].second;
  }

  vector<vector<int>> interesting(N);
  for (int i = 0; i < N; ++i) {
    interesting[i].push_back(0);
    for (auto [y, w] : onCol[i])
      interesting[i].push_back(y);
    if (i)
      for (auto [y, w] : onCol[i - 1])
        interesting[i].push_back(y);
    if (i + 1 < N)
      for (auto [y, w] : onCol[i + 1])
        interesting[i].push_back(y);
    interesting[i].push_back(N);
    sort(interesting[i].begin(), interesting[i].end());
    interesting[i].resize(unique(interesting[i].begin(), interesting[i].end()) -
                          interesting[i].begin());
  }
  array<vector<pair<int, int>>, 2> oldDp, suffixMax;
  for (int i = 0; i < 2; ++i)
    oldDp[i] = suffixMax[i] = {{0, 0}};

  auto eval = [&](int side, int h) {
    auto it = upper_bound(oldDp[side].begin(), oldDp[side].end(), pair(h, INF));
    assert(it != oldDp[side].begin());
    --it;
    return it->second;
  };

  auto getSum = [&](int i, int h1, int h2) -> int {
    int lo = upper_bound(onCol[i].begin(), onCol[i].end(), pair(h1, INF)) -
             onCol[i].begin();
    int up = upper_bound(onCol[i].begin(), onCol[i].end(), pair(h2, INF)) -
             onCol[i].begin();
    return prefSum[i][up] - prefSum[i][lo];
  };

  int sol = 0;
  for (int i = 1; i < N; ++i) {
    int nbInteressants = interesting[i].size();
    vector<pair<int, int>> dp0, dp1;
    for (int iHauteur = 0; iHauteur < nbInteressants; ++iHauteur) {
      int h = interesting[i][iHauteur];
      // 1
      int v1 = 0;
      int v0 = 0;
      for (int jHauteur = 0; jHauteur < (int)interesting[i - 1].size();
           ++jHauteur) {
        int oldH = interesting[i - 1][jHauteur];
        if (oldH > h)
          v1 = max(v1, getSum(i, h, oldH) + eval(1, oldH));
        if (oldH >= h)
          // suffix max -> ez
          v0 = max(v0, eval(1, oldH));
        else
          v0 = max(v0, getSum(i - 1, oldH, h) + eval(0, oldH));
      }
      v1 = max(v1, v0);
      sol = max(sol, v1);
      dp0.emplace_back(h, v0);
      dp1.emplace_back(h, v1);
      // cout << i << ' ' << h << ' ' << v0 << ' ' << v1 << endl;
    }
    oldDp[0] = move(dp0);
    oldDp[1] = move(dp1);
    suffixMax[0] = oldDp[0];
    suffixMax[1] = oldDp[1];
    for (int h = nbInteressants - 2; h >= 0; --h)
      for (int side = 0; side < 2; ++side)
        suffixMax[side][h].second =
            max(suffixMax[side][h].second, suffixMax[side][h + 1].second);
  }
  return sol;
}

Subtask #1
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1090 ms 17608 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 1093 ms 23140 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 41 ms 13524 KB Output is correct
2 Correct 35 ms 13552 KB Output is correct
3 Correct 70 ms 17440 KB Output is correct
4 Correct 64 ms 17228 KB Output is correct
5 Correct 145 ms 23756 KB Output is correct
6 Correct 104 ms 23672 KB Output is correct
7 Correct 109 ms 23764 KB Output is correct
8 Correct 119 ms 23780 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 1 ms 276 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 3 ms 468 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 1 ms 276 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 3 ms 468 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 19 ms 508 KB Output is correct
17 Execution timed out 1080 ms 4032 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 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 1 ms 276 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 3 ms 468 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 19 ms 508 KB Output is correct
17 Execution timed out 1080 ms 4032 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #7
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 41 ms 13524 KB Output is correct
2 Correct 35 ms 13552 KB Output is correct
3 Correct 70 ms 17440 KB Output is correct
4 Correct 64 ms 17228 KB Output is correct
5 Correct 145 ms 23756 KB Output is correct
6 Correct 104 ms 23672 KB Output is correct
7 Correct 109 ms 23764 KB Output is correct
8 Correct 119 ms 23780 KB Output is correct
9 Correct 144 ms 23776 KB Output is correct
10 Correct 77 ms 14012 KB Output is correct
11 Correct 225 ms 27872 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 36 ms 13504 KB Output is correct
19 Correct 38 ms 13564 KB Output is correct
20 Correct 41 ms 13560 KB Output is correct
21 Correct 36 ms 13688 KB Output is correct
22 Correct 177 ms 21960 KB Output is correct
23 Correct 233 ms 27988 KB Output is correct
24 Correct 255 ms 27876 KB Output is correct

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1090 ms 17608 KB Time limit exceeded
2 Halted 0 ms 0 KB -