Submission #904984

#	Time	Username	Problem	Language	Result	Execution time	Memory
904984		Macker	Rice Hub (IOI11_ricehub)	C++17	Compilation error	0 ms	0 KiB

ricehub

#include "ricehub.h"
#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
typedef long double ld;
#define all(v) v.begin(), v.end()

//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx2")

vector<ll> v;
ll b, n;

bool can(ll k){
    ll med = v[k / 2];
    ll dst = 0;
    for (ll i = 0; i < k / 2; i++) {
        dst += med - v[i];
    }
    for (ll i = k / 2; i < k; i++) {
        dst += v[i] - med;
    }
    
    if(dst <= b) return true;
    
    ll lmed = med;
    for (ll i = k; i < n; i++) {
        med = v[(i + i - k + 1) / 2];

        dst -= med - v[i - k];
        dst += v[i] - lmed;

        if(dst <= b) return true;
        lmed = med;
    }
    return false;
}

int besthub(ll R, ll L, ll X[], long long B)
{
    v.assign(X, X+R);
    b = B;
    n = R;
    ll l = 0, r = R, mid;
    while(l < r){
        mid = (l + r + 1) / 2;
        if(can(mid)) l = mid;
        else r = mid - 1;
    }
    return l;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccX4Y0Vu.o: in function `main':
grader.cpp:(.text.startup+0xae): undefined reference to `besthub(int, int, int*, long long)'
collect2: error: ld returned 1 exit status