Submission #1079253

#	Time	Username	Problem	Language	Result	Execution time	Memory
1079253		farica	Catfish Farm (IOI22_fish)	C++17	0 / 100	908 ms	2097152 KiB

fish

#include "fish.h"

#include <bits/stdc++.h>

using namespace std;

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
    
    vector<vector<long long>>dp(N+1, vector<long long>(N+1, 0));
    vector<vector<pair<long long,long long>>>v(N);
    for(int i=0; i<M; ++i) {
        v[X[i]].push_back({Y[i], W[i]});
    }
    for(int i=0; i<N; ++i) sort(v[i].begin(), v[i].end());
    for(int i=1; i<=N; ++i) {
        if(i >= 2) dp[i][0] = dp[i-2][N];
        long long cnt1 = 0, cnt2 = 0, sum = 0, prev = 0;
        for(int j=1; j<=N; ++j) {
            dp[i][j] = max(dp[i][j-1], dp[i-1][j]);
            if(i != N && !v[i].empty() && cnt2 != (int)v[i].size() && v[i][cnt2].first == j - 1) {
                sum += v[i][cnt2].second;
                ++cnt2; 
            }
            if(i >= 2 && !v[i-2].empty() && cnt1 != (int)v[i-2].size() && v[i-2][cnt1].first == j - 1) {
                prev += v[i-2][cnt1].second;
                prev = max(prev, dp[i-1][j-1] + v[i-2][cnt1].second);
                ++cnt1;
            } 
            dp[i][j] = max(dp[i][j], prev + sum);
        }
    }
    
    return dp[N][N];
}

• Subtask 1: 0 / 3
• Subtask 2: 0 / 6
• Subtask 3: 0 / 9
• Subtask 4: 0 / 14
• Subtask 5: 0 / 21
• Subtask 6: 0 / 17
• Subtask 7: 0 / 14
• Subtask 8: 0 / 16