Submission #764747

#	Time	Username	Problem	Language	Result	Execution time	Memory
764747		ngrace	Last supper (IOI12_supper)	C++14	43 / 100	185 ms	11100 KiB

advisor

#include <bits/stdc++.h>
#include "advisor.h"
using namespace std;
#define v vector
#define ii pair<int,int>
#define fi first
#define se second

void ComputeAdvice(int *C, int N, int K, int M) {
  int sik = 0;
  for(int i=0; i<32; i++){
    if(K & (1<<i)) sik = i+1;
  }

  v<int> lastpos(N,N+1);
  v<int> nextpos(N);
  v<int> nextposk(K,N+1);
  for(int i=N-1; i>=0; i--){
    if(C[i]<K) nextposk[C[i]] = i;
    nextpos[i] = lastpos[C[i]];
    lastpos[C[i]] = i;
  }

  v<int> scaff(N,-1);
  priority_queue<ii> pq;
  for(int i=0; i<K; i++){
    scaff[i]=i;
    pq.push({nextposk[i], i});
  }

  for(int i=0; i<N; i++){
    int req = C[i];
    if(scaff[req]==-1){
      int rem = pq.top().se;
      pq.pop();
      int k = scaff[rem];
      scaff[req] = k;
      pq.push({nextpos[i], req});
      scaff[rem] = -1;
      
      for(int b=0; b<sik; b++) WriteAdvice((bool)(k & (1<<b)));
    } else{
      pq.push({nextpos[i], req});
    }
  }

}

assistant

#include <bits/stdc++.h>
#include "assistant.h"
using namespace std;
#define v vector
#define ii pair<int,int>
#define fi first
#define se second

void Assist(unsigned char *A, int N, int K, int R) {
  int sik = 0;
  for(int i=0; i<32; i++){
    if(K & (1<<i)) sik = i+1;
  }

  v<int> scaff(N, -1);
  v<int> revscaff(K, -1);
  for(int i=0; i<K; i++){
    scaff[i]=i;
    revscaff[i]=i;
  }

  int aind=0;
  for(int i=0; i<N; i++){
    int req = GetRequest();
    if(scaff[req]==-1){
      int k=0;
      for(int j=0; j<sik; j++){
        if(A[aind]==1) k |= (1<<j);
        aind++;
      }
      int rem = revscaff[k];
      PutBack(rem);
      scaff[rem]=-1;
      scaff[req]=k;
      revscaff[k]=req;
    }
  }

}

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 0 / 35
• Subtask 5: 17 / 39