Submission #1073193

#	Time	Username	Problem	Language	Result	Execution time	Memory
1073193		Zicrus	Catfish Farm (IOI22_fish)	C++17	9 / 100	23 ms	7004 KiB

fish

#include <bits/stdc++.h>
#include "fish.h"
using namespace std;

typedef long long ll;

int n, m;
vector<int> x, y, w;

ll max_weights(int N, int M, vector<int> X, vector<int> Y, vector<int> W) {
    n = N; m = M; x = X; y = Y; w = W;
    vector<ll> a(n);
    for (int i = 0; i < m; i++) {
        a[x[i]] = w[i];
    }
    vector<ll> dp(n);
    dp[1] = a[0];
    for (int i = 2; i < n; i++) {
        dp[i] = a[i-1];
        for (int j = i-1; j >= 0 && j >= i-5; j--) {
            ll val = dp[j];
            if (i-j > 1) val += a[i-1];
            if (i-j > 2) val += a[j+1];
            dp[i] = max(dp[i], val);
        }
    }
    ll res = dp[n-1];
    for (int i = n-2; i >= n-5 && i >= 0; i--) {
        res = max(res, dp[i] + a[i+1]);
    }
    return res;
}

#ifdef TEST
#include "grader.cpp"
#endif

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