Submission #118495

#	Time	Username	Problem	Language	Result	Execution time	Memory
118495		E869120	Last supper (IOI12_supper)	C++14	100 / 100	133 ms	19544 KiB

advisor

#include "advisor.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <functional>
using namespace std;

int E[100009], F[100009], A2[100009], A3[100009]; vector<int>X[100009];
priority_queue<pair<int, int>, vector<pair<int, int>>, less<pair<int, int>>>Q;

void ComputeAdvice(int *C, int N, int K, int M) {
	int BITS = 0; for (int i = 0; i < 19; i++) { if ((1 << i) >= K) { BITS = i; break; } }

	for (int i = 0; i < N; i++) X[C[i]].push_back(i);
	for (int i = 0; i < N; i++) X[i].push_back(N);
	for (int i = 0; i < N; i++) E[i] = -1;
	for (int i = 0; i < K; i++) E[i] = i;
	for (int i = 0; i < N; i++) { Q.push(make_pair(X[i][0], i)); }

	for (int i = 0; i < N; i++) {
		while (true) {
			int pos1 = Q.top().first, pos2 = Q.top().second;
			if (E[pos2] == -1) Q.pop();
			else break;
		}
		if (E[C[i]] != -1) {
			F[i] = -1;
			int pos1 = lower_bound(X[C[i]].begin(), X[C[i]].end(), i) - X[C[i]].begin(); pos1--;
			if (pos1 >= 0) A2[X[C[i]][pos1]] = 1;
			else {
				A3[C[i]] = 1;
			}
		}
		else {
			int pos1 = Q.top().second;
			F[i] = E[pos1];
			E[pos1] = -1;
			E[C[i]] = F[i];
		}
		int pos1 = lower_bound(X[C[i]].begin(), X[C[i]].end(), i + 1) - X[C[i]].begin();
		Q.push(make_pair(X[C[i]][pos1], C[i]));
	}

	for (int i = 0; i < N; i++) WriteAdvice(A2[i]);
	for (int i = 0; i < K; i++) WriteAdvice(A3[i]);
}

assistant

#include "assistant.h"
#include <iostream>
#include <queue>
using namespace std;

int LIST[200009], B2[100009], B3[100009];
queue<int>Q; bool used[100009];

void Assist(unsigned char *A, int N, int K, int R) {
	for (int i = 0; i < N; i++) B2[i] = A[i];
	for (int i = 0; i < K; i++) B3[i] = A[i + N];
	for (int i = 0; i < K; i++) used[i] = true;
	for (int i = 0; i < K; i++) LIST[i + N] = i;

	for (int i = 0; i < K; i++) { if (B3[i] == 0) Q.push(i + N); }
	for (int i = 0; i < N; i++) {
		LIST[i] = GetRequest();
		if (used[LIST[i]] == true) {
			// 無視する
		}
		else {
			int pos = -1;
			while (!Q.empty()) {
				int pos1 = Q.front();
				if (used[LIST[pos1]] == true) { pos = pos1; break; }
				else Q.pop();
			}
			PutBack(LIST[pos]);
			used[LIST[pos]] = false;
			used[LIST[i]] = true;
			if (!Q.empty()) Q.pop();
		}
		if (B2[i] == 0) Q.push(i);
	}
}

Compilation message (stderr)

advisor.cpp: In function 'void ComputeAdvice(int*, int, int, int)':
advisor.cpp:23:8: warning: unused variable 'pos1' [-Wunused-variable]
    int pos1 = Q.top().first, pos2 = Q.top().second;
        ^~~~
advisor.cpp:13:6: warning: variable 'BITS' set but not used [-Wunused-but-set-variable]
  int BITS = 0; for (int i = 0; i < 19; i++) { if ((1 << i) >= K) { BITS = i; break; } }
      ^~~~

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