Submission #1115165

#	Time	Username	Problem	Language	Result	Execution time	Memory
1115165		raspy	Rice Hub (IOI11_ricehub)	C++17	100 / 100	23 ms	5984 KiB

ricehub

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

#define ll long long
#define vi vector<ll>
#define ii pair<ll, ll>
#define f first
#define s second
#define all(x) (x).begin(), (x).end()
#define P 31
#define mod 1'000'000'007
#define inf 1'000'000'000'000'000'0
#define pb push_back
#define str string
#define sz(x) (x).size()
#define vvi vector<vi>
#define fun function
#define oopt cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(false);
#define file freopen("problemname.in", "r", stdin); freopen("pr.out", "w", stdout);
#define dbg(v) cout << "Line(" << __LINE__ << ") -> " << #v << " = " << (v) << endl;

using namespace std;
template <class T, int SZ> using arr = array<T, SZ>;

int besthub(int r, int l, int x[], long long b)
{
	vi kum(r+1);
	vi kum1(r+1);
	for (ll i = 1; i <= r; i++)
		kum[i] = kum[i-1]+x[i-1];
	for (ll i = r-1; i >= 0; i--)
		kum1[i] = kum1[i+1]+l-x[i];
	deque<ll> dq;
	ll rez = 0;
	auto calcprice = [&dq, &kum, &kum1, &x, &l]() -> ll
	{
		ll med = dq[dq.size()/2];
		ll std = dq.size()-dq.size()/2-1;
		ll stl = dq.size()/2;
		ll tr = kum[dq.back()+1]-kum[med+1]-x[med]*std;
		tr = tr+kum1[dq[0]]-kum1[med]-(l-x[med])*stl;
		return tr;
	};
	for (ll i = 0; i < r; i++)
	{
		dq.pb(i);
		ll trc = calcprice();
		while (trc > b)
		{
			dq.pop_front();
			trc = calcprice();
		}
		rez = max(rez, (ll)dq.size());
	}
	return rez;
}






























// #include <stdio.h>
// #include <stdlib.h>

// #define MAX_R  1000000

// static int R, L;
// static long long B;
// static int X[MAX_R];
// static int solution;

// inline 
// void my_assert(int e) {if (!e) abort();}

// static void read_input()
// {
//   int i;
//   my_assert(3==scanf("%d %d %lld",&R,&L,&B));
//   for(i=0; i<R; i++)
//     my_assert(1==scanf("%d",&X[i]));
//   my_assert(1==scanf("%d",&solution));
// }

// int main()
// {
//   int ans;
//   read_input();
//   ans = besthub(R,L,X,B);
//   if(ans==solution)
//     printf("Correct.\n");
//   else
//     printf("Incorrect.  Returned %d instead of %d.\n",ans,solution);

//   return 0;
// }

• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 32 / 32