Submission #42858

#	Time	Username	Problem	Language	Result	Execution time	Memory
42858		PowerOfNinjaGo	Holiday (IOI14_holiday)	C++14	24 / 100	5070 ms	2812 KiB

holiday

//Power Of Ninja Go
#include <bits/stdc++.h>
#ifdef atom
#include "grader.cpp"
#else
#include "holiday.h"
#endif
using namespace std;
typedef long long ll; typedef pair<int, int> ii;
#define X first
#define Y second
#define vi vector<int>
#define vii vector< ii >
#define pb push_back
int *arr, N, st, D;
ll sumK(int k, int a, int b)
{
    vi foo;
    for(int i = a; i<= b; i++) foo.pb(arr[i]);
    sort(foo.begin(), foo.end());
    ll ret = 0;
    while(!foo.empty() && k)
    {
        ret += foo.back();
        foo.pop_back();
        k--;
    }
    return ret;
}
ll solve(int L = 0, int R = st, int i = st, int j = N-1)
{
    if(L> R) return 0;
    int M = (L+R)/2;
    int opt = i;
    ll res = -4e18;
    for(int p = i; p<= j; p++)
    {
        int a = st-M, b = p-st;
        int del = min(a, b)*2+max(a, b);
        if(del>= D) break;
        ll here = sumK(D-del, M, p);
        if(here> res)
        {
            res = here;
            opt = p;
        }
    }
    return max(max(solve(L, M-1, i, opt), solve(M+1, R, opt, j)), res);
}
long long findMaxAttraction(int n, int start, int d, int attraction[])
{
    arr = attraction; N = n; st = start; D = d;
    return solve();
    return 0;
}

Compilation message (stderr)

grader.cpp: In function 'int main()':
grader.cpp:7:12: warning: variable 'n_s' set but not used [-Wunused-but-set-variable]
     int i, n_s;
            ^

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