Submission #1031930

#TimeUsernameProblemLanguageResultExecution timeMemory
1031930Mr_HusanboyCatfish Farm (IOI22_fish)C++17
0 / 100
29 ms5716 KiB
#include "fish.h"
#include <bits/stdc++.h>

using namespace std;

#define ff first
#define ss second
#define all(a) (a).begin(), (a).end()
#define ll long long

template<typename T>
int len(T &a){
    return a.size();
}

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());


long long max_weights(int n, int m, std::vector<int> x, std::vector<int> y,
                      std::vector<int> w) {
    vector<ll> s(n);
    for(int i = 0; i < m; i++) s[x[i]] = w[i];

    vector<array<ll, 2>> dp(n);
    dp[0][0] = dp[0][1] = 0;
    ll ans = 0;
    for(int i = 1; i < n; i ++){
        dp[i][0] = max(dp[i - 1][1] + s[i], dp[i - 1][0]);
        dp[i][1] = (dp[i - 1][1], dp[i - 1][0]);
        dp[i][1] = max(dp[i][1], (i - 2 >= 0 ? dp[i - 2][0] : 0) + s[i - 1]);

        ans = max({ans, dp[i][1], dp[i][0]});
        //cout << dp[i][0] << ' ' << dp[i][1] << endl;
    }

    return ans;
}
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