Submission #925270

#	Time	Username	Problem	Language	Result	Execution time	Memory
925270		IS_Rushdi	Catfish Farm (IOI22_fish)	C++17	0 / 100	1154 ms	2097152 KiB

fish

#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){
    long long dp[n+1][n+1][2]{};
    int sum[n+1][n+1]{};
    for(int i = 0; i < m; i++) x[i] += 1;
    for(int i = 0; i < m; i++) y[i] += 1;
    for(int i = 0; i < m; i++) sum[x[i]][y[i]] += w[i];
    long long ans = 0;

    for(int i = 1; i <= n; i++){
        for(int j = 0; j < 2; j++){
            dp[0][i][j] = -1e18;
        }
    }
    dp[0][0][1] = 0;
    for(int i = 1; i <= n; i++){
        for(int j = 0; j <= n; j++){
            for(int k = 0; k <= n; k++){
                long long now = dp[i-1][j][1];
                int cur = k;
                while(cur > j) now += sum[i-1][cur--];
                cur = j;
                while(cur > k) now += sum[i][cur--];
                if(k >= j) dp[i][k][1] = max(dp[i][k][1],now);
                else dp[i][k][0] = max(dp[i][k][0],now);
                
                ans = max(ans,now);
            }
            for(int k = 0; k < j; k++){
                long long now = dp[i-1][j][0];
                int cur = k;
                while(cur > j) now += sum[i-1][cur--];
                cur = j;
                while(cur > k) now += sum[i][cur--];
                dp[i][k][0] = max(dp[i][k][0],now);
                ans = max(ans,now);
            }
        }
    }
    return ans;
}
 
// int main(){
//     cout << max_weights(5, 4, {0, 1, 4, 3}, {2, 1, 4, 3}, {5, 2, 1, 3}) << '\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