oj.uz

Submission #641995

# Submission time Handle Problem Language Result Execution time Memory
641995 2022-09-18T08:26:42 Z Vanilla Catfish Farm (IOI22_fish) C++17
18 / 100
 508 ms 126508 KB 
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long int64;
const int maxn = 2e5 + 2;
map <int64, int64> dp [maxn][2];
int64 mx [maxn];
vector <pair <int64, int64> > p[maxn];
vector <pair <int64, int64> > pref [maxn], suff[maxn];
vector <int64> pos [maxn];

int64 psum (int64 i, int64 j) {
  auto it = lower_bound(p[i].begin(), p[i].end(), make_pair(j, (int64) 1e18));
  if (it == p[i].begin()) return 0;
  return (--it)->second;
}

int64 max_weights(int n, int m, vector<int> x, vector<int> y,
                      vector<int> w) {
  for (int i = 0; i < m; i++) {
    pos[++x[i]].push_back(++y[i]);
    p[x[i]].push_back({y[i], w[i]});
  }
  for (int i = 1; i <= n; i++){
    sort(p[i].begin(), p[i].end());
    sort(pos[i].begin(), pos[i].end());
    int64 sum = 0;
    for (auto& [j, c]: p[i]) {
      int64 t = sum;
      sum+=c;
      c+=t;
      // cout << i << " " << j << " " << c << "\n";
    }
  }
  // cout << "> " << psum(1, 3) << " " << psum(1, 5) << " " << psum(1, 2) << "\n";
  for (int i = 1; i <= n; i++){
    vector <int64> ps = {0, n};
    for (auto j: pos[i-1]) ps.push_back(j);
    for (auto j: pos[i+1]) ps.push_back(j);
    sort(ps.begin(), ps.end());
    for (auto j: ps){
      auto it = lower_bound(suff[i-1].begin(), suff[i-1].end(), make_pair(j, -1ll));
      dp[i][j][0] = -psum(i, j);
      if (it != suff[i-1].end()) dp[i][j][0] += it->second;

      // dp[i][j][0] = suff[i-1][j] - p[i][j];

      it = lower_bound(pref[i - 1].begin(), pref[i - 1].end(), make_pair(j, (int64) 1e18));
      dp[i][j][1] = ((i - 2 >= 0) ? mx[i-2]: 0) + psum(i-1, j);
      if (it != pref[i-1].begin()) dp[i][j][1] = max(dp[i][j][1], (--it)->second + psum(i-1, j));
      // dp[i][j][1] = max(mx[i-2] + p[i-1][j], pref[i-1][j] + p[i-1][j]);


      mx[i] = max({mx[i], dp[i][j][0], dp[i][j][1]});
    }
    for (auto j: ps) {
      pref[i].push_back(make_pair(j, max((pref[i].empty() ? 0ll: pref[i].back().second), dp[i][j][1] - psum(i, j))));
    }
    reverse(pos[i].begin(), pos[i].end());
    for (auto j: ps) {
      suff[i].push_back(make_pair(j, max((suff[i].empty() ? 0ll: suff[i].back().second), max(dp[i][j][0], dp[i][j][1]) + psum(i + 1, j))));
    }
    reverse(suff[i].begin(), suff[i].end());
    // for (int j = 0; j <= n; j++){
    //   pref[i][j] = max((j != 0 ? pref[i][j - 1]: 0ll), dp[i][j][1] - p[i][j]);
    // }
    // for (int j = n; j >= 0; j--){
    //   suff[i][j] = max((j != n ? suff[i][j + 1] : 0ll), max(dp[i][j][0], dp[i][j][1]) + p[i + 1][j]);
    // }
  }
  return mx[n];
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 75280 KB Output is correct
2 Correct 149 ms 80892 KB Output is correct
3 Correct 81 ms 66816 KB Output is correct
4 Correct 77 ms 66764 KB Output is correct
5 Correct 344 ms 115360 KB Output is correct
6 Correct 508 ms 126508 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 37844 KB Output is correct
2 Correct 224 ms 84740 KB Output is correct
3 Correct 250 ms 91928 KB Output is correct
4 Correct 126 ms 75256 KB Output is correct
5 Correct 146 ms 80900 KB Output is correct
6 Correct 22 ms 37844 KB Output is correct
7 Correct 19 ms 37844 KB Output is correct
8 Correct 18 ms 37848 KB Output is correct
9 Correct 17 ms 37808 KB Output is correct
10 Correct 81 ms 66852 KB Output is correct
11 Correct 79 ms 66760 KB Output is correct
12 Correct 140 ms 78412 KB Output is correct
13 Correct 161 ms 83988 KB Output is correct
14 Correct 138 ms 76816 KB Output is correct
15 Correct 156 ms 78500 KB Output is correct
16 Correct 145 ms 76824 KB Output is correct
17 Correct 151 ms 81132 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 66828 KB Output is correct
2 Correct 83 ms 66824 KB Output is correct
3 Correct 150 ms 79468 KB Output is correct
4 Correct 131 ms 77552 KB Output is correct
5 Correct 201 ms 94236 KB Output is correct
6 Correct 197 ms 94236 KB Output is correct
7 Correct 201 ms 94216 KB Output is correct
8 Correct 206 ms 94200 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 37872 KB Output is correct
2 Correct 20 ms 37840 KB Output is correct
3 Correct 18 ms 37768 KB Output is correct
4 Correct 20 ms 37844 KB Output is correct
5 Correct 19 ms 37860 KB Output is correct
6 Correct 19 ms 37884 KB Output is correct
7 Correct 20 ms 37884 KB Output is correct
8 Correct 18 ms 37876 KB Output is correct
9 Correct 18 ms 37972 KB Output is correct
10 Incorrect 20 ms 38292 KB 1st lines differ - on the 1st token, expected: '799839985182', found: '799745076036'
11 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 37872 KB Output is correct
2 Correct 20 ms 37840 KB Output is correct
3 Correct 18 ms 37768 KB Output is correct
4 Correct 20 ms 37844 KB Output is correct
5 Correct 19 ms 37860 KB Output is correct
6 Correct 19 ms 37884 KB Output is correct
7 Correct 20 ms 37884 KB Output is correct
8 Correct 18 ms 37876 KB Output is correct
9 Correct 18 ms 37972 KB Output is correct
10 Incorrect 20 ms 38292 KB 1st lines differ - on the 1st token, expected: '799839985182', found: '799745076036'
11 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 37872 KB Output is correct
2 Correct 20 ms 37840 KB Output is correct
3 Correct 18 ms 37768 KB Output is correct
4 Correct 20 ms 37844 KB Output is correct
5 Correct 19 ms 37860 KB Output is correct
6 Correct 19 ms 37884 KB Output is correct
7 Correct 20 ms 37884 KB Output is correct
8 Correct 18 ms 37876 KB Output is correct
9 Correct 18 ms 37972 KB Output is correct
10 Incorrect 20 ms 38292 KB 1st lines differ - on the 1st token, expected: '799839985182', found: '799745076036'
11 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 66828 KB Output is correct
2 Correct 83 ms 66824 KB Output is correct
3 Correct 150 ms 79468 KB Output is correct
4 Correct 131 ms 77552 KB Output is correct
5 Correct 201 ms 94236 KB Output is correct
6 Correct 197 ms 94236 KB Output is correct
7 Correct 201 ms 94216 KB Output is correct
8 Correct 206 ms 94200 KB Output is correct
9 Correct 218 ms 94224 KB Output is correct
10 Correct 155 ms 74616 KB Output is correct
11 Correct 297 ms 111548 KB Output is correct
12 Correct 18 ms 37844 KB Output is correct
13 Correct 18 ms 37844 KB Output is correct
14 Correct 18 ms 37880 KB Output is correct
15 Correct 20 ms 37868 KB Output is correct
16 Correct 19 ms 37844 KB Output is correct
17 Correct 18 ms 37840 KB Output is correct
18 Correct 97 ms 66804 KB Output is correct
19 Correct 79 ms 66788 KB Output is correct
20 Correct 84 ms 66772 KB Output is correct
21 Correct 81 ms 66764 KB Output is correct
22 Incorrect 251 ms 92144 KB 1st lines differ - on the 1st token, expected: '45561826463480', found: '45319947198848'
23 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 75280 KB Output is correct
2 Correct 149 ms 80892 KB Output is correct
3 Correct 81 ms 66816 KB Output is correct
4 Correct 77 ms 66764 KB Output is correct
5 Correct 344 ms 115360 KB Output is correct
6 Correct 508 ms 126508 KB Output is correct
7 Correct 18 ms 37844 KB Output is correct
8 Correct 224 ms 84740 KB Output is correct
9 Correct 250 ms 91928 KB Output is correct
10 Correct 126 ms 75256 KB Output is correct
11 Correct 146 ms 80900 KB Output is correct
12 Correct 22 ms 37844 KB Output is correct
13 Correct 19 ms 37844 KB Output is correct
14 Correct 18 ms 37848 KB Output is correct
15 Correct 17 ms 37808 KB Output is correct
16 Correct 81 ms 66852 KB Output is correct
17 Correct 79 ms 66760 KB Output is correct
18 Correct 140 ms 78412 KB Output is correct
19 Correct 161 ms 83988 KB Output is correct
20 Correct 138 ms 76816 KB Output is correct
21 Correct 156 ms 78500 KB Output is correct
22 Correct 145 ms 76824 KB Output is correct
23 Correct 151 ms 81132 KB Output is correct
24 Correct 81 ms 66828 KB Output is correct
25 Correct 83 ms 66824 KB Output is correct
26 Correct 150 ms 79468 KB Output is correct
27 Correct 131 ms 77552 KB Output is correct
28 Correct 201 ms 94236 KB Output is correct
29 Correct 197 ms 94236 KB Output is correct
30 Correct 201 ms 94216 KB Output is correct
31 Correct 206 ms 94200 KB Output is correct
32 Correct 18 ms 37872 KB Output is correct
33 Correct 20 ms 37840 KB Output is correct
34 Correct 18 ms 37768 KB Output is correct
35 Correct 20 ms 37844 KB Output is correct
36 Correct 19 ms 37860 KB Output is correct
37 Correct 19 ms 37884 KB Output is correct
38 Correct 20 ms 37884 KB Output is correct
39 Correct 18 ms 37876 KB Output is correct
40 Correct 18 ms 37972 KB Output is correct
41 Incorrect 20 ms 38292 KB 1st lines differ - on the 1st token, expected: '799839985182', found: '799745076036'
42 Halted 0 ms 0 KB -