oj.uz

Submission #1068515

# Submission time Handle Problem Language Result Execution time Memory
1068515 2024-08-21T10:24:32 Z Unforgettablepl Catfish Farm (IOI22_fish) C++17
35 / 100
 1000 ms 1674224 KB 
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;

long long max_weights(int N, int M,vector<int> X,vector<int> Y,
                      vector<int> W){
    vector DP(N+1,vector(N+1,vector(2,0ll)));
    vector<vector<pair<int,long long>>> pref(N+2);
    for(int i=0;i<=N+1;i++)pref[i].emplace_back(0,0);
    vector<vector<int>> special_points(N+2);
    for(int i=1;i<=N+1;i++)special_points[i].emplace_back(0);
    for(int i=1;i<=N+1;i++)special_points[i].emplace_back(N);
    vector transition1(N+1,vector(N+1,0ll));
    vector transition2(N+1,vector(N+1,0ll));
    vector transition3(N+1,vector(N+1,0ll));
    vector transition4(N+1,vector(N+1,0ll));
    for(int i=0;i<M;i++) {
        pref[X[i]+1].emplace_back(Y[i]+1,W[i]);
        special_points[X[i]+1].emplace_back(Y[i]);
    }
    for(int i=1;i<=N+1;i++) {
        sort(special_points[i].begin(),special_points[i].end());
        sort(pref[i].begin(), pref[i].end());
        for(int j=1;j<pref[i].size();j++)pref[i][j].second+=pref[i][j-1].second;
    }
    auto getpref = [&](int i,int j) {
        auto iter = lower_bound(pref[i].begin(),pref[i].end(),make_pair(j+1,-1ll));
        iter--;
        return iter->second;
    };
    for(int i=2;i<=N;i++) {
        for(int j=0;j<=N;j++) {
            if(i!=2)DP[i][j][1]=max(DP[i][j][1],-getpref(i,j)+transition1[i-1][j]);
            else {
                for(int x=j;x<=N;x++) {
                    DP[i][j][1]=max(DP[i][j][1],getpref(i,x)-getpref(i,j)+max(DP[i-1][x][0],DP[i-1][x][1]));
                }
            }
            if(i>2) {
                if(i!=3) {
                    DP[i][j][0]=max(DP[i][j][0],getpref(i-1,j)+transition2[i-2][j]);
                    DP[i][j][0]=max(DP[i][j][0],transition3[i-2][j]);
                }
                else for(int x=0;x<=N;x++) {
                    DP[i][j][0]=max(DP[i][j][0],getpref(i-1,max(x,j))+max(DP[i-2][x][0],DP[i-2][x][1]));
                }
            }
            if(i!=2)DP[i][j][0]=max(DP[i][j][0],getpref(i-1,j)+transition4[i-1][j]);
            else for(int x=0;x<=j;x++) {
                DP[i][j][0]=max(DP[i][j][0],getpref(i-1,j)-getpref(i-1,x)+DP[i-1][x][0]);
            }
            transition1[i][j]=getpref(i+1,j)+max(DP[i][j][0],DP[i][j][1]);
            transition2[i][j]=max(DP[i][j][0],DP[i][j][1]);
            transition3[i][j]=getpref(i+1,j)+max(DP[i][j][0],DP[i][j][1]);
            transition4[i][j]=-getpref(i,j)+DP[i][j][0];
        }
        for(int j=N-1;j>=0;j--)transition1[i][j]=max(transition1[i][j],transition1[i][j+1]);
        for(int j=1;j<=N;j++)transition2[i][j]=max(transition2[i][j],transition2[i][j-1]);
        for(int j=N-1;j>=0;j--)transition3[i][j]=max(transition3[i][j],transition3[i][j+1]);
        for(int j=1;j<=N;j++)transition4[i][j]=max(transition4[i][j],transition4[i][j-1]);
    }
    long long ans = 0;
    for(int j=0;j<=N;j++)ans=max(ans,DP[N][j][0]);
    for(int j=0;j<=N;j++)ans=max(ans,DP[N][j][1]);
    return ans;
}

Compilation message

fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         for(int j=1;j<pref[i].size();j++)pref[i][j].second+=pref[i][j-1].second;
      |                     ~^~~~~~~~~~~~~~~

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1101 ms 1635408 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Execution timed out 1155 ms 1674224 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1088 ms 1626748 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 360 KB Output is correct
3 Correct 0 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 0 ms 348 KB Output is correct
9 Correct 2 ms 2396 KB Output is correct
10 Correct 13 ms 8284 KB Output is correct
11 Correct 3 ms 2396 KB Output is correct
12 Correct 11 ms 8284 KB Output is correct
13 Correct 2 ms 860 KB Output is correct
14 Correct 13 ms 8280 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 0 ms 360 KB Output is correct
3 Correct 0 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 0 ms 348 KB Output is correct
9 Correct 2 ms 2396 KB Output is correct
10 Correct 13 ms 8284 KB Output is correct
11 Correct 3 ms 2396 KB Output is correct
12 Correct 11 ms 8284 KB Output is correct
13 Correct 2 ms 860 KB Output is correct
14 Correct 13 ms 8280 KB Output is correct
15 Correct 12 ms 8232 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 33 ms 10456 KB Output is correct
18 Correct 28 ms 11356 KB Output is correct
19 Correct 26 ms 11100 KB Output is correct
20 Correct 27 ms 10960 KB Output is correct
21 Correct 32 ms 11096 KB Output is correct
22 Correct 46 ms 13764 KB Output is correct
23 Correct 17 ms 8792 KB Output is correct
24 Correct 30 ms 9912 KB Output is correct
25 Correct 10 ms 8284 KB Output is correct
26 Correct 15 ms 8636 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 360 KB Output is correct
3 Correct 0 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 0 ms 348 KB Output is correct
9 Correct 2 ms 2396 KB Output is correct
10 Correct 13 ms 8284 KB Output is correct
11 Correct 3 ms 2396 KB Output is correct
12 Correct 11 ms 8284 KB Output is correct
13 Correct 2 ms 860 KB Output is correct
14 Correct 13 ms 8280 KB Output is correct
15 Correct 12 ms 8232 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 33 ms 10456 KB Output is correct
18 Correct 28 ms 11356 KB Output is correct
19 Correct 26 ms 11100 KB Output is correct
20 Correct 27 ms 10960 KB Output is correct
21 Correct 32 ms 11096 KB Output is correct
22 Correct 46 ms 13764 KB Output is correct
23 Correct 17 ms 8792 KB Output is correct
24 Correct 30 ms 9912 KB Output is correct
25 Correct 10 ms 8284 KB Output is correct
26 Correct 15 ms 8636 KB Output is correct
27 Correct 906 ms 776868 KB Output is correct
28 Correct 172 ms 62056 KB Output is correct
29 Correct 996 ms 793428 KB Output is correct
30 Execution timed out 1113 ms 792428 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1088 ms 1626748 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1101 ms 1635408 KB Time limit exceeded
2 Halted 0 ms 0 KB -