oj.uz

Submission #130694

# Submission time Handle Problem Language Result Execution time Memory
130694 2019-07-15T22:38:55 Z dragonslayerit Last supper (IOI12_supper) C++14
43 / 100
 2500 ms 3248 KB 
#include "advisor.h"
#include <vector>


void ComputeAdvice(int *C, int N, int K, int M) {
  std::vector<int> reuse(K+N,false);
  std::vector<int> next(N);
  std::vector<int> first(N,N);
  for(int i=N-1;i>=0;i--){
    next[i]=first[C[i]];
    first[C[i]]=i;
  }
  next.insert(next.begin(),first.begin(),first.begin()+K);
  std::vector<int> colors;
  for(int i=0;i<K;i++){
    colors.push_back(i);
  }
  colors.insert(colors.end(),C,C+N);
  //time entered: [0,K) for init, [K,N+K) for added
  //time color will be reused: next[cache[i]]
  std::vector<int> cache(K);
  std::vector<int> where(N,-1);//index in cache for this color, or -1 if not present
  for(int i=0;i<K;i++){
    cache[i]=i;
    where[i]=i;
  }
  for(int i=0;i<N;i++){
    int late=0;
    for(int k=0;k<K;k++){
      if(next[cache[k]]>next[cache[late]]){
	late=k;
      }
    }
    if(where[C[i]]!=-1){
      late=where[C[i]];
      reuse[cache[late]]=true;
    }
    //evict cache[late]
    where[colors[cache[late]]]=-1;
    cache[late]=i+K;
    where[colors[cache[late]]]=late;
  }
  for(int i=0;i<K+N;i++){
    WriteAdvice(reuse[i]);
  }
}

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

void Assist(unsigned char *A, int N, int K, int R) {
  std::vector<int> advice(A,A+R);
  std::vector<std::pair<int,int> > cache(K);//(color,reused)
  std::vector<int> where(N,-1);//where in cache a color is, or -1 if not present
  for(int i=0;i<K;i++){
    cache[i]={i,advice[i]};
    where[i]=i;
  }
  for(int i=0;i<N;i++){
    int color=GetRequest();
    int evict=0;
    for(int k=0;k<K;k++){
      if(!cache[k].second){
	evict=k;
      }
    }
    if(where[color]!=-1){
      evict=where[color];
    }
    where[cache[evict].first]=-1;
    if(cache[evict].first!=color){
      PutBack(cache[evict].first);
    }
    cache[evict].first=color;
    cache[evict].second=advice[i+K];
    where[cache[evict].first]=evict;
  }
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 768 KB Output is correct
2 Correct 4 ms 624 KB Output is correct
3 Correct 11 ms 760 KB Output is correct
4 Correct 7 ms 900 KB Output is correct
5 Correct 7 ms 1116 KB Output is correct
6 Correct 9 ms 1040 KB Output is correct
7 Correct 23 ms 1256 KB Output is correct
8 Correct 38 ms 976 KB Output is correct
9 Correct 31 ms 976 KB Output is correct
10 Correct 69 ms 1048 KB Output is correct
11 Correct 46 ms 1120 KB Output is correct

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 137 ms 1520 KB Output is correct
2 Correct 1305 ms 3248 KB Output is correct
3 Execution timed out 2533 ms 3184 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2518 ms 2620 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 1048 KB Output is correct
2 Correct 45 ms 968 KB Output is correct
3 Correct 7 ms 1036 KB Output is correct
4 Correct 7 ms 984 KB Output is correct
5 Correct 8 ms 1240 KB Output is correct
6 Correct 10 ms 984 KB Output is correct
7 Correct 28 ms 1028 KB Output is correct
8 Correct 40 ms 1028 KB Output is correct
9 Correct 47 ms 1052 KB Output is correct
10 Correct 128 ms 1204 KB Output is correct

Subtask #5
0.0 / 39.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2513 ms 3028 KB Time limit exceeded
2 Execution timed out 2549 ms 3056 KB Time limit exceeded
3 Execution timed out 2537 ms 3056 KB Time limit exceeded
4 Execution timed out 2527 ms 3184 KB Time limit exceeded
5 Execution timed out 2559 ms 3060 KB Time limit exceeded
6 Execution timed out 2569 ms 3056 KB Time limit exceeded
7 Execution timed out 2568 ms 3056 KB Time limit exceeded
8 Execution timed out 2555 ms 3056 KB Time limit exceeded
9 Execution timed out 2535 ms 3056 KB Time limit exceeded
10 Execution timed out 2565 ms 3056 KB Time limit exceeded