Submission #32165

#	Time	Username	Problem	Language	Result	Execution time	Memory
32165		imeimi2000	최후의 만찬 (IOI12_supper)	C++14	100 / 100	116 ms	17104 KiB

advisor

#include "advisor.h"
#include <vector>
#include <queue>

using namespace std;
typedef long long llong;

static vector<bool> used(100000, false);
static int nxt[100000];
static int pos[100000];

struct col {
	int color;
	int next;
	bool operator<(const col &x) const {
		return next < x.next;
	}
};

static priority_queue<col> pq;
static vector<int> work[100000];
static int top[100000];
void ComputeAdvice(int *c, int n, int k, int m) {
	for (int i = 0; i < n; ++i) pos[i] = -1, nxt[i] = n;
	for (int i = 0; i < n; ++i) {
		if (pos[c[i]] == -1) {
			pos[c[i]] = i;
			if (c[i] < k)
				pq.push({ c[i], i });
		}
		else {
			nxt[pos[c[i]]] = i;
			pos[c[i]] = i;
		}
	}
	for (int i = 0; i < n; ++i) {
		if (pos[i] == -1) {
			if (i < k)
				pq.push({ i, n });
		}
		else {
			nxt[pos[i]] = n;
		}
	}
	for (int i = 0; i < k; ++i) used[i] = true;
	for (int i = 0; i < n; ++i) {
		if (used[c[i]]) {
			work[c[i]].push_back(0);
		}
		else {
			col t = pq.top();
			pq.pop();
			used[t.color] = false;
			used[c[i]] = true;
			work[t.color].push_back(1);
		}
		pq.push({ c[i], nxt[i] });
	}
	for (int i = 0; i < n + k; ++i) {
		int j = i < k ? i : c[i - k];
		if (top[j] == work[j].size()) WriteAdvice(1);
		else WriteAdvice(work[j][top[j]++]);
	}
}

assistant

#include "assistant.h"
#include <vector>

static std::vector<bool> used(100000, false);
static int exclude[200000];
static int top, bot;
void Assist(unsigned char *advice, int n, int k, int r) {
	for (int i = 0; i < k; ++i) {
		used[i] = true;
		if (advice[i]) exclude[top++] = i;
	}
	advice += k;
	for (int i = 0; i < n; ++i) {
		int req = GetRequest();
		if (!used[req]) {
			PutBack(exclude[bot]);
			used[req] = true;
			used[exclude[bot++]] = false;
		}
		if (advice[i]) exclude[top++] = req;
	}
}

Compilation message (stderr)

advisor.cpp: In function 'void ComputeAdvice(int*, int, int, int)':
advisor.cpp:61:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (top[j] == work[j].size()) WriteAdvice(1);
       ~~~~~~~^~~~~~~~~~~~~~~~~

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