Submission #1022775

#	Time	Username	Problem	Language	Result	Execution time	Memory
1022775		vjudge1	Catfish Farm (IOI22_fish)	C++17	26 / 100	243 ms	106316 KiB

fish

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int maxn = 1e5 + 100;
const int maxl = 11;
int n;
ll dp[maxn][maxl][maxl];
ll a[maxn][maxl];

long long max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W){
    n = N;
    ll sum = 0;
    bool ok = 1;
    for(int i = 0; i < M; i++){
        X[i]++; Y[i]++;
        a[X[i]][Y[i]] += W[i];
        sum += W[i];
        ok &= X[i] & 1;
    }
    if(ok) return sum;
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= 10; j++){
            a[i][j] += a[i][j-1];
        }
    }
    for(int c = 1; c <= n + 1; c++){
        for(int i = 0; i <= 10; i++){
            for(int j = 0; j <= 10; j++){
                dp[c][i][j] = -(ll)1e18;
                if(c == 1 && i == 0) dp[c][i][j] = 0;
            }
        }
    }
    for(int c = 2; c <= n + 1; c++){
        for(int i = 0; i <= 10; i++){
            for(int j = 0; j <= 10; j++){
                for(int k = 0; k <= 10; k++){
                    ll x = dp[c-1][i][j];
                    if(max(i, k) > j){
                        x += a[c-1][max(i, k)] - a[c-1][j];
                    }
                    dp[c][j][k] = max(dp[c][j][k], x);
                }
            }
        }
    }
    ll ans = 0;
    for(int i = 0; i <= 10; i++){
        ans = max(ans, dp[n+1][i][0]);
    }
    return ans;
}

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