Submission #1044998

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044998		ender	Catfish Farm (IOI22_fish)	C++17	0 / 100	14 ms	5464 KiB

fish

#include "fish.h"
#include <bits/stdc++.h>
#include <vector>

using namespace std;

const long long INF = 1e18;

const int MAXN = 1e5;

int n;

long long memo[MAXN];
bool cached[MAXN];

int a[MAXN];

long long dp(int i, bool check){

  if(i >= n-1) return 0;

  if(cached[i]) return memo[i];

  long long res = -INF;

  if(check){

    long long act1 = dp(i+2, true) + a[i+1];
    long long act2 = dp(i+1, false);

    res = max({res, act1, act2});

  } else {

    long long act1 = dp(i+2, true) + a[i+1] + a[i-1];
    long long act2 = dp(i+1, false);

    res = max({res, act1, act2});

  }


  memo[i] = res;
  cached[i] = true;

  return res;

}

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y, std::vector<int> W) {

  n = N;

  for(int i = 0; i < n; ++i) a[i] = 0;

  for(int i = 0; i<M; ++i){

    a[X[i]] = W[i];

  }

  return dp(0, true);

}

• 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