Submission #1144214

#	Time	Username	Problem	Language	Result	Execution time	Memory
1144214		aguss	Holiday (IOI14_holiday)	C++20	7 / 100	5092 ms	6216 KiB

holiday

#include"holiday.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define all(x) x.begin(), x.end()
#define dbg(x) cerr << #x << ": " << x << '\n';

vector<ll> arr;
vector<vector<ll>> dp;
int n;
ll ans = 0;

ll s;

void derecha(int d, int curr, ll sum){
    if(d <= 0 or curr >= n){
        ans = max(ans, sum);
        return;
    }
    derecha(d - 1, curr + 1, sum);
    derecha(d - 2, curr + 1, sum + arr[curr]);
}

void izquierda(int d, int curr, ll sum){
    if(d <= 0 or curr < 0){
        ans = max(ans, sum);
        return;
    }
    izquierda(d - 1, curr - 1, sum);
    izquierda(d - 2, curr - 1, sum + arr[curr]);
}

void izqder(int d, int curr, ll sum){
    if(d <= 0 or curr < 0){
        ans = max(ans, sum);
        return;
    }
    izqder(d - 1, curr - 1, sum);
    izqder(d - 2, curr - 1, sum + arr[curr]);
    derecha(d - abs(s - curr) - 1, s + 1, sum);
    derecha(d - abs(s - curr) - 2, s + 1, sum + arr[curr]);
}
void derizq(int d, int curr, ll sum){
    if(d <= 0 or curr >= n){
        ans = max(ans, sum);
        return;
    }
    derizq(d - 1, curr + 1, sum);
    derizq(d - 2, curr + 1, sum + arr[curr]);
    izquierda(d - abs(s - curr) - 1, s - 1, sum);
    izquierda(d - abs(s - curr) - 2, s - 1, sum + arr[curr]);
}

long long int findMaxAttraction(int N, int start, int d, int attraction[]) {
    n = N;
    s = start;
    arr.assign(n, 0);
    copy(attraction, attraction + n, arr.begin());
    izqder(d, start, 0);
    derizq(d, start, 0);
    return ans; 
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 23
• Subtask 3: 0 / 17
• Subtask 4: 0 / 53