oj.uz

Submission #641993

# Submission time Handle Problem Language Result Execution time Memory
641993 2022-09-18T08:25:50 Z Vanilla Catfish Farm (IOI22_fish) C++17
18 / 100
 511 ms 133064 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].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 135 ms 76292 KB Output is correct
2 Correct 147 ms 82372 KB Output is correct
3 Correct 87 ms 66812 KB Output is correct
4 Correct 83 ms 66824 KB Output is correct
5 Correct 349 ms 121308 KB Output is correct
6 Correct 511 ms 133064 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 37844 KB Output is correct
2 Correct 215 ms 85824 KB Output is correct
3 Correct 251 ms 95140 KB Output is correct
4 Correct 163 ms 76392 KB Output is correct
5 Correct 147 ms 82408 KB Output is correct
6 Correct 21 ms 37844 KB Output is correct
7 Correct 19 ms 37784 KB Output is correct
8 Correct 19 ms 37880 KB Output is correct
9 Correct 21 ms 37804 KB Output is correct
10 Correct 82 ms 66744 KB Output is correct
11 Correct 85 ms 66768 KB Output is correct
12 Correct 137 ms 79556 KB Output is correct
13 Correct 153 ms 85516 KB Output is correct
14 Correct 137 ms 78032 KB Output is correct
15 Correct 163 ms 79764 KB Output is correct
16 Correct 135 ms 78052 KB Output is correct
17 Correct 148 ms 82492 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 66892 KB Output is correct
2 Correct 79 ms 66756 KB Output is correct
3 Correct 141 ms 80164 KB Output is correct
4 Correct 126 ms 77756 KB Output is correct
5 Correct 197 ms 94264 KB Output is correct
6 Correct 196 ms 95000 KB Output is correct
7 Correct 197 ms 95464 KB Output is correct
8 Correct 195 ms 95552 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 37844 KB Output is correct
2 Correct 19 ms 37792 KB Output is correct
3 Correct 19 ms 37776 KB Output is correct
4 Correct 18 ms 37844 KB Output is correct
5 Correct 18 ms 37844 KB Output is correct
6 Correct 19 ms 37844 KB Output is correct
7 Correct 18 ms 37844 KB Output is correct
8 Correct 19 ms 37828 KB Output is correct
9 Correct 19 ms 37976 KB Output is correct
10 Incorrect 19 ms 38356 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 37844 KB Output is correct
2 Correct 19 ms 37792 KB Output is correct
3 Correct 19 ms 37776 KB Output is correct
4 Correct 18 ms 37844 KB Output is correct
5 Correct 18 ms 37844 KB Output is correct
6 Correct 19 ms 37844 KB Output is correct
7 Correct 18 ms 37844 KB Output is correct
8 Correct 19 ms 37828 KB Output is correct
9 Correct 19 ms 37976 KB Output is correct
10 Incorrect 19 ms 38356 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 37844 KB Output is correct
2 Correct 19 ms 37792 KB Output is correct
3 Correct 19 ms 37776 KB Output is correct
4 Correct 18 ms 37844 KB Output is correct
5 Correct 18 ms 37844 KB Output is correct
6 Correct 19 ms 37844 KB Output is correct
7 Correct 18 ms 37844 KB Output is correct
8 Correct 19 ms 37828 KB Output is correct
9 Correct 19 ms 37976 KB Output is correct
10 Incorrect 19 ms 38356 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 80 ms 66892 KB Output is correct
2 Correct 79 ms 66756 KB Output is correct
3 Correct 141 ms 80164 KB Output is correct
4 Correct 126 ms 77756 KB Output is correct
5 Correct 197 ms 94264 KB Output is correct
6 Correct 196 ms 95000 KB Output is correct
7 Correct 197 ms 95464 KB Output is correct
8 Correct 195 ms 95552 KB Output is correct
9 Correct 217 ms 94876 KB Output is correct
10 Correct 168 ms 75688 KB Output is correct
11 Correct 284 ms 114080 KB Output is correct
12 Correct 18 ms 37844 KB Output is correct
13 Correct 18 ms 37880 KB Output is correct
14 Correct 20 ms 37840 KB Output is correct
15 Correct 18 ms 37844 KB Output is correct
16 Correct 18 ms 37804 KB Output is correct
17 Correct 19 ms 37852 KB Output is correct
18 Correct 81 ms 66912 KB Output is correct
19 Correct 79 ms 66720 KB Output is correct
20 Correct 79 ms 66720 KB Output is correct
21 Correct 82 ms 66856 KB Output is correct
22 Incorrect 257 ms 93524 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 135 ms 76292 KB Output is correct
2 Correct 147 ms 82372 KB Output is correct
3 Correct 87 ms 66812 KB Output is correct
4 Correct 83 ms 66824 KB Output is correct
5 Correct 349 ms 121308 KB Output is correct
6 Correct 511 ms 133064 KB Output is correct
7 Correct 20 ms 37844 KB Output is correct
8 Correct 215 ms 85824 KB Output is correct
9 Correct 251 ms 95140 KB Output is correct
10 Correct 163 ms 76392 KB Output is correct
11 Correct 147 ms 82408 KB Output is correct
12 Correct 21 ms 37844 KB Output is correct
13 Correct 19 ms 37784 KB Output is correct
14 Correct 19 ms 37880 KB Output is correct
15 Correct 21 ms 37804 KB Output is correct
16 Correct 82 ms 66744 KB Output is correct
17 Correct 85 ms 66768 KB Output is correct
18 Correct 137 ms 79556 KB Output is correct
19 Correct 153 ms 85516 KB Output is correct
20 Correct 137 ms 78032 KB Output is correct
21 Correct 163 ms 79764 KB Output is correct
22 Correct 135 ms 78052 KB Output is correct
23 Correct 148 ms 82492 KB Output is correct
24 Correct 80 ms 66892 KB Output is correct
25 Correct 79 ms 66756 KB Output is correct
26 Correct 141 ms 80164 KB Output is correct
27 Correct 126 ms 77756 KB Output is correct
28 Correct 197 ms 94264 KB Output is correct
29 Correct 196 ms 95000 KB Output is correct
30 Correct 197 ms 95464 KB Output is correct
31 Correct 195 ms 95552 KB Output is correct
32 Correct 18 ms 37844 KB Output is correct
33 Correct 19 ms 37792 KB Output is correct
34 Correct 19 ms 37776 KB Output is correct
35 Correct 18 ms 37844 KB Output is correct
36 Correct 18 ms 37844 KB Output is correct
37 Correct 19 ms 37844 KB Output is correct
38 Correct 18 ms 37844 KB Output is correct
39 Correct 19 ms 37828 KB Output is correct
40 Correct 19 ms 37976 KB Output is correct
41 Incorrect 19 ms 38356 KB 1st lines differ - on the 1st token, expected: '799839985182', found: '799745076036'
42 Halted 0 ms 0 KB -