Submission #58863

#	Time	Username	Problem	Language	Result	Execution time	Memory
58863		gabrielsimoes	Last supper (IOI12_supper)	C++17	0 / 100	2576 ms	13448 KiB

advisor

#include "advisor.h"
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 100000;

typedef pair<int,int> pii;

static vector<int> v[MAXN];
static bool current[MAXN];
static set<pii> nxRemove;

int getNextUsage(int i) {
  if (v[i].empty()) return 1000000000;
  else {
    int ret = v[i].back();
    return ret;
  }
}

void ComputeAdvice(int *C, int N, int K, int M) {
  for (int i = 0; i < N; i++)
    v[C[i]].push_back(i);

  for (int i = 0; i < N; i++)
    reverse(v[i].begin(), v[i].end());

  for (int i = 0; i < N; i++) current[i] = false;

  vector<int> stk;

  for (int i = 0; i < K; i++) {
    stk.push_back(i);
    current[i] = true;
    nxRemove.insert({getNextUsage(i), i});
  }

  for (int i = 0; i < N; i++) {
    // printf("i %d C[i] %d\n", i, C[i]);

    if (current[C[i]]) {
      nxRemove.erase({getNextUsage(C[i]), C[i]});
      v[C[i]].pop_back();
      nxRemove.insert({getNextUsage(C[i]), C[i]});
    } else {
      auto it = prev(nxRemove.end());
      int toRemove = it->second;
      nxRemove.erase(it);

      v[C[i]].pop_back();
      nxRemove.insert({getNextUsage(C[i]), C[i]});

      // printf("toRemove %d\n", toRemove);

      while (stk.back() != toRemove) {
        WriteAdvice(1);
        // printf("putBit %d\n", 1);
        int back = stk.back();
        stk.pop_back();
        stk.insert(stk.begin(), back);
      }

      WriteAdvice(0);
      // printf("putBit %d\n", 0);
      stk.pop_back();
      stk.push_back(C[i]);

      current[C[i]] = true;
      current[toRemove] = false;
    }
  }
}

assistant

#include "assistant.h"
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 100000;

static bool current[MAXN];
vector<int> stk;

bool getBit(unsigned char *A) {
  static int i = 0;
  // printf("getBit %d\n", A[i]);
  return A[i++];
}

void Assist(unsigned char *A, int N, int K, int R) {
  for (int i = 0; i < K; i++) {
    stk.push_back(i);
    current[i] = true;
  }

  for (int i = 0; i < N; i++) {
    int req = GetRequest();

    if (current[req]) {
      continue;
    }

    while (getBit(A)) {
      int back = stk.back();
      stk.pop_back();
      stk.insert(stk.begin(), back);
    }

    PutBack(stk.back());
    current[stk.back()] = false;
    stk.pop_back();

    stk.push_back(req);
    current[req] = true;
  }
}

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