Submission #56914

#	Time	Username	Problem	Language	Result	Execution time	Memory
56914		kingpig9	Last supper (IOI12_supper)	C++11	20 / 100	641 ms	55056 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;
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 subtask;
static set<pii> st;	//pii(when we neet i, i) -- you remove GREATEST of them.
static bool has[MAXN];
static vector<int> inds[MAXN];

void ComputeAdvice (int *C, int N, int K, int M) {
	debug("--------------------------------BEGIN ADVISOR-----------------------------------\n");
	//let's just implement -- get the bits
	for (int i = 0; i < N; i++) {
		inds[i].push_back(N);
	}
	for (int i = N - 1; i >= 0; i--) {
		inds[C[i]].push_back(i);
	}

	for (int i = 0; i < K; i++) {
		has[i] = true;
		st.emplace(inds[i].back(), i);
	}

	vector<int> ans;
	for (int i = 0; i < N; i++) {
		inds[C[i]].pop_back();
		if (has[C[i]]) {
			st.erase(pii(inds[C[i]].back(), C[i]));
			st.insert(pii(inds[C[i]].back(), C[i]));
			debug("No action\n");
			ans.push_back(N);	//this is bad
			continue;
		}

		//remove one
		auto it = --st.end();
		pii tp = *it;
		st.erase(it);
		has[tp.se] = false;
		debug("Put %d away, put %d in.\n", tp.se, C[i]);
		ans.push_back(tp.se);
		st.insert(pii(inds[C[i]].back(), C[i]));

		//add C[i]
		has[C[i]] = true;
	}

	//the end of computing.
	int logn = 31 - __builtin_clz(N);
	for (int x : ans) {
		debug("-----x = %d-------\n", x);
		for (int i = logn; i >= 0; i--) {
			WriteAdvice((x >> i) & 1);
			debug("AA %d\n", (x >> i) & 1);
		}
	}
	debug("--------------------------------DONE WITH THE ADVISOR-----------------------------------\n");
}

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;

//#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 int subtask;

void Assist (unsigned char *A, int N, int K, int R) {
	debug("--------------------------------BEGIN ASSISTANT-----------------------------------\n");

	int logn = 31 - __builtin_clz(N);
	for (int i = 0; i < N; i++) {
		GetRequest();
		int x = 0;
		for (int j = 0; j <= logn; j++) {
			int pos = (logn + 1) * i + j;
			debug("Advice = %d\n", A[pos]);
			x = 2 * x + A[pos];
		}

		if (x != N) {
			debug("put %d away\n", x);
			PutBack(x);
		}
	}
	debug("--------------------------------DONE WITH THE ASSISTANT-----------------------------------\n");
}

Compilation message (stderr)

advisor.cpp:17:2: warning: #warning static (advisor) [-Wcpp]
 #warning static (advisor)
  ^~~~~~~
advisor.cpp:19:12: warning: 'subtask' defined but not used [-Wunused-variable]
 static int subtask;
            ^~~~~~~

assistant.cpp:16:2: warning: #warning static (assistant) [-Wcpp]
 #warning static (assistant)
  ^~~~~~~
assistant.cpp:18:12: warning: 'subtask' defined but not used [-Wunused-variable]
 static int subtask;
            ^~~~~~~

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