Submission #852684

#	Time	Username	Problem	Language	Result	Execution time	Memory
852684		tvgk	Holiday (IOI14_holiday)	C++17	Compilation error	0 ms	0 KiB

holiday

#include<bits/stdc++.h>
using namespace std;
#define task ""
#define se second
#define fi first
#define ll long long
#define ii pair<ll, ll>
const long mxN = 1e5 + 7;

ii tree[mxN * 4], a[mxN];
ll num, mx, tmp, ans, vt[mxN], j;

void Up(int j)
{
    tree[j].se = tree[j * 2].se + tree[j * 2 + 1].se;

    tree[j].fi = 0;
    if (tree[j * 2].se)
        tree[j].fi += tree[j * 2].fi;
    if (tree[j * 2 + 1].se)
        tree[j].fi += tree[j * 2 + 1].fi;
}

void Build(int j, int l, int r)
{
    if (l == r)
    {
        tree[j].fi = a[l].fi;
        return;
    }

    int mid = (l + r) / 2;
    Build(j * 2, l, mid);
    Build(j * 2 + 1, mid + 1, r);
}

ll Get(int j, int l, int r)
{
    if (tree[j].se <= num)
    {
        num -= tree[j].se;
        return tree[j].fi;
    }

    if ((!tree[j].se) || (num <= 0))
        return 0;

    int mid = (l + r) / 2;
    return Get(j * 2 + 1, mid + 1, r) + Get(j * 2, l, mid);
}

void Update(int j, int l, int r, int vt, int tt)
{
    if (l > vt || vt > r)
        return;

    if (l == r)
    {
        tree[j].se = tt;
        return;
    }

    int mid = (l + r) / 2;
    Update(j * 2, l, mid, vt, tt);
    Update(j * 2 + 1, mid + 1, r, vt, tt);

    Up(j);
}

long long int findMaxAttraction(ll n, ll stt, ll day, ll att[])
{
    stt++;
    for (int i = 1; i <= n; i++)
    {
        a[i].fi = att[i - 1];
        a[i].se = i;
    }

    sort(a + 1, a + n + 1);
    for (int i = 1; i <= n; i++)
        vt[a[i].se] = i;

    Build(1, 1, n);
    for (int i = stt; i <= n; i++)
        Update(1, 1, n, vt[i], 1);

    j = n;
    for (int i = stt; i >= 1; i--)
    {
        Update(1, 1, n, vt[i], 1);
        num = day - (j - i) - min(stt - i, j - stt);
        mx = Get(1, 1, n);

        while (j > stt)
        {
            Update(1, 1, n, vt[j], 0);
            j--;

            num = day - (j - i) - min(stt - i, j - stt);
            tmp = Get(1, 1, n);

            if (tmp >= mx)
                mx = tmp;
            else
            {
                j++;
                Update(1, 1, n, vt[j], 1);
                break;
            }
        }

        ans = max(ans, mx);
    }

    return ans;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccPOCNXK.o: in function `main':
grader.cpp:(.text.startup+0xaf): undefined reference to `findMaxAttraction(int, int, int, int*)'
collect2: error: ld returned 1 exit status