Submission #623156

#	Time	Username	Problem	Language	Result	Execution time	Memory
623156		ollel	Last supper (IOI12_supper)	C++14	0 / 100	182 ms	8304 KiB

advisor

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


typedef vector<int> vi;
typedef vector<vi> vvi;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<bool> vb;

#define rep(i,a,b) for(int i = a; i < b; i++)
#define pb push_back

// void WriteAdvice(int x) {
//   cout << x << " ";
// }

void ComputeAdvice(int *c, int n, int k, int m) {
  set<int> scaffold;
  rep(i,0,k) scaffold.insert(i);


  vi advice(2*n, 0);
  vi added(n, 0);
  rep(i,0,k) added[i] = i;

  vi nextOccurenceOfColor(n,1e9);
  vi sweep(n,1e9);
  for (int i = n - 1; i >= 0; i--) {
    nextOccurenceOfColor[i] = sweep[c[i]];
    sweep[c[i]] = i;
  }

  priority_queue<pair<int,int>> pq;
  rep(i,0,k) pq.push({sweep[i], i});

  // for (auto k : scaffold) cout << k << " "; cout << endl;
  rep(i,0,n) {
    int color = c[i];
    added[color] = n+i;

    if (scaffold.find(color) != scaffold.end()) {
      continue;
    }

    pair<int,int> res = pq.top(); pq.pop();
    // cout << "popped " << res.first << ", "<< res.second << endl;
    int toRemove = res.second;
    advice[added[toRemove]] = 1;
    // cout << "advice at " << added[toRemove] << endl;
    scaffold.erase(toRemove);

    scaffold.insert(c[i]);
    pq.push({nextOccurenceOfColor[i], c[i]});
    // for (auto k : scaffold) cout << k << " "; cout << endl;

  }
  rep(i,0,2*n) WriteAdvice(advice[i]);
}

// int main() {
//   int c[] ={0, 4, 5, 2, 1, 3};
//   ComputeAdvice(c, 6, 3, -1);
// }

assistant

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


typedef vector<int> vi;
typedef vector<vi> vvi;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<bool> vb;

#define rep(i,a,b) for(int i = a; i < b; i++)
#define pb push_back



void Assist(unsigned char *a, int n, int k, int r) {
  set<int> scaffold;
  rep(i,0,k) scaffold.insert(i);

  vector<int> advice(2*n);
  rep(i,0,2*n) advice[i] = a[i];
  queue<int> q;
  rep(i,0,k) if (advice[i] == 1) q.push(i);

  rep(i,0,n) {
    int nextColor = GetRequest();
    if (scaffold.find(nextColor) == scaffold.end()) {
      int rem = q.front(); q.pop();
      PutBack(rem);
      scaffold.erase(rem);
      scaffold.insert(nextColor);
    }
    if (advice[n + i] == 1) {
      q.push(nextColor);
    }
  }
}

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