Submission #1019797

#	Time	Username	Problem	Language	Result	Execution time	Memory
1019797		NValchanov	Holiday (IOI14_holiday)	C++17	47 / 100	318 ms	1684 KiB

holiday

#include <bits/stdc++.h>
#include "holiday.h"

using namespace std;

typedef long long ll;

ll start0(int n, int d, int a[])
{
    ll ans = 0;

    map < ll, ll > m; 

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

        ll ost = d - i;
        ll sum = 0;

        for(ll val = 100; val >= 1; val--)
        {
            if(ost == 0)
                break;

            ll cur = min(ost, m[val]);

            sum += cur * val;

            ost -= cur;
        }

        ans = max(ans, sum);
    }

    return ans;
}

ll slow(int n, int start, int d, int a[])
{
    ll ans = 0;

    for(int left = 0; left <= start; left++)
    {
        multiset < ll > s;
        ll sum = 0;

        for(int i = left; i < start; i++)
        {
            s.insert(a[i]);
            sum += a[i];
        }

        for(int right = start; right < n; right++)
        {
            s.insert(a[right]);
            sum += a[right];

            ll left_len = start - left;
            ll right_len = right - start;

            ll ost = d - (left_len + right_len + min(left_len, right_len));

            if(ost <= 0)
                break;

            while(s.size() > ost)
            {
                auto it = s.begin();
                sum -= *it;
                s.erase(it);
            }

            ans = max(ans, sum);
        }
    }

    return ans;
}

long long int findMaxAttraction(int n, int start, int d, int a[]) 
{
    if(n <= 3000)
        return slow(n, start, d, a);
    else
        return start0(n, d, a);
        
}

Compilation message (stderr)

holiday.cpp: In function 'll slow(int, int, int, int*)':
holiday.cpp:67:28: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   67 |             while(s.size() > ost)
      |                   ~~~~~~~~~^~~~~

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