Submission #58460

#	Time	Username	Problem	Language	Result	Execution time	Memory
58460		kingpig9	Last supper (IOI12_supper)	C++11	0 / 100	242 ms	26248 KiB

advisor

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

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
static const int MAXN = 1e5 + 10;

//#define debug(...) fprintf(stderr, __VA_ARGS__)
#define debug(...)
#define fi first
#define se second
#define all(v) (v).begin(), (v).end()
#define fillchar(a, s) memset((a), (s), sizeof(a))

#warning static (advisor)

static int *C, N, K, M;
vector<int> req[MAXN], away[MAXN];
bool has[MAXN];

void ComputeAdvice (int *ccc, int nnn, int kkk, int mmm) {
	C = ccc;
	N = nnn;
	K = kkk;
	M = mmm;

	for (int i = 0; i < N; i++) {
		req[C[i]].push_back(i);
	}

	for (int i = 0; i < N; i++) {
		req[i].push_back(N);
	}

	priority_queue<pii> pq;	//pii(next request, id)
	for (int i = 0; i < K; i++) {
		pq.push(pii(req[i][0], i));
		has[i] = true;
	}

	//there are 2 shelves
	//one of them: x will be away before x is requested again.
	//best to away if it's not going to be requested again.

	vector<int> ans;
	for (int i = 0; i < N; i++) {
		int x = C[i];
		if (has[x]) {
			ans.push_back(N);	//awayove N - useless
		} else {
			int id = pq.top().se;
			pq.pop();
			away[id].push_back(i);
			ans.push_back(id);
			has[id] = false;

			has[x] = true;
			pq.push(pii(*upper_bound(all(req[x]), i), x));
		}
	}

	for (int i = 0; i < N; i++) {
		away[i].push_back(N);
	}

	//first - check if the last request is before it's first taken away
	for (int i = 0; i < K; i++) {
		WriteAdvice(req[i].front() > away[i].back());	//request only after you take it away for the last time
	}

	for (int i = 0; i < N; i++) {
		//so take something out. and replace with new.
		int nw = C[i];
		WriteAdvice(*upper_bound(all(req[nw]), i) > away[nw].back());
	}
}

assistant

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

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
static const int MAXN = 1e5 + 10;

#define debug(...) fprintf(stderr, __VA_ARGS__)
//#define debug(...)
#define fi first
#define se second
#define all(v) (v).begin(), (v).end()
#define fillchar(a, s) memset((a), (s), sizeof(a))

#warning static (assistant)

static unsigned char *A;
static int N, K;
static int cur[MAXN];
static bool has[MAXN];

static void go() {
	priority_queue<pii> pq;
	for (int i = 0; i < K; i++) {
		cur[i] = i;
		has[i] = true;
		pq.emplace(A[i], i);
	}
	A += K;

	for (int i = 0; i < N; i++) {
		//replace it with this
		int req = GetRequest();
		if (has[req]) {
			continue;
		}
		int ind = pq.top().se;
		int &ref = cur[ind];
		//debug("REF %d\n", ref);
		PutBack(ref);
		has[ref] = false;
		pq.pop();
		ref = req;
		pq.emplace(A[i], ind);
		has[req] = true;
	}
}

void Assist (unsigned char *aaa, int nnn, int kkk, int rrr) {
	A = aaa;
	N = nnn;
	K = kkk;
	go();
}

Compilation message (stderr)

advisor.cpp:17:2: warning: #warning static (advisor) [-Wcpp]
 #warning static (advisor)
  ^~~~~~~

assistant.cpp:17:2: warning: #warning static (assistant) [-Wcpp]
 #warning static (assistant)
  ^~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 35
• Subtask 5: 0 / 39