Submission #272114

#	Time	Username	Problem	Language	Result	Execution time	Memory
272114		songc	Last supper (IOI12_supper)	C++14	100 / 100	110 ms	8672 KiB

advisor

#include "advisor.h"
#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef long long LL;
typedef pair<int,int> pii;

static int A[202020], X[202020], R[101010];
static int B[202020];
static priority_queue<pii> PQ;

void ComputeAdvice(int *C, int N, int K, int M) {
	for (int i=0; i<K; i++) A[i]=i;
	for (int i=0; i<N; i++) A[i+K]=C[i], R[i]=N+K;
	for (int i=N+K-1; i>=0; i--) X[i]=R[A[i]], R[A[i]]=i;

	memset(R, -1, sizeof R);
	for (int i=0; i<K; i++) PQ.push(pii(X[i], i)), R[i]=i;
	for (int i=K; i<K+N; i++){
		if (R[A[i]]<0){
			while (R[A[PQ.top().se]] != PQ.top().se) PQ.pop();
			B[PQ.top().se]=1, R[A[PQ.top().se]]=-1;
			PQ.pop();
		}
		R[A[i]]=i, PQ.push(pii(X[i], i));
	}
	for (int i=0; i<K+N; i++) WriteAdvice(B[i]);
}

assistant

#include "assistant.h"
#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef long long LL;
typedef pair<int,int> pii;

static bool chk[101010];
static set<int> E;

void Assist(unsigned char *A, int N, int K, int R) {
	for (int i=0; i<K; i++){
		if (A[i]) E.insert(i);
		chk[i]=true;
	}
	for (int i=0; i<N; i++){
		int x=GetRequest();
		if (!chk[x]) PutBack(*E.begin()), chk[*E.begin()]=false, E.erase(E.begin());
		if (A[i+K]) E.insert(x);
		else E.erase(x);
		chk[x]=true;
	}
}

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