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Submission #50233

# Submission time Handle Problem Language Result Execution time Memory
50233 2018-06-08T11:35:58 Z rondojim medians (balkan11_medians) C++17
100 / 100
 38 ms 3740 KB 
#include <stdio.h>
 
const int MAXN = 2e5 + 5;
 
int vis[MAXN], minimum, maximum, A[MAXN], B[MAXN], N;
 
void plus(){ while(vis[minimum]) minimum++; }
void minus(){ while(vis[maximum]) maximum--; }
 
int main(){
  scanf("%d", &N);
  for(int i=1; i<=N; ++i) scanf("%d", &B[i]);
  minimum = 0, maximum = 2 * N;
  vis[minimum] = vis[maximum] = vis[B[1]] = 1, A[1] = B[1];
  for(int i=2; i<=N; ++i){
    if(B[i - 1] == B[i]){
      plus(); A[2 * i - 2] = minimum, vis[minimum] = 1;
      minus(); A[2 * i - 1] = maximum, vis[maximum] = 1;
    }
    else if(B[i - 1] < B[i]){
      if(!vis[B[i]]){
        A[2 * i - 2] = B[i], vis[B[i]] = 1;
        minus(); A[2 * i - 1] = maximum, vis[maximum] = 1;
      }
      else{
        minus(); A[2 * i - 2] = maximum, vis[maximum] = 1;
        minus(); A[2 * i - 1] = maximum, vis[maximum] = 1;
      }
    }
    else if(B[i - 1] > B[i]){
      if(!vis[B[i]]){
        A[2 * i - 2] = B[i], vis[B[i]] = 1;
        plus(); A[2 * i - 1] = minimum, vis[minimum] = 1;
      }
      else{
        plus(); A[2 * i - 2] = minimum, vis[minimum] = 1;
        plus(); A[2 * i - 1] = minimum, vis[minimum] = 1;
      }
    }
  }
  for(int i=1; i<2*N; ++i) printf("%d ", A[i]);
  puts("");
  return 0;
}

Compilation message

medians.cpp: In function 'int main()':
medians.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &N);
   ~~~~~^~~~~~~~~~
medians.cpp:12:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   for(int i=1; i<=N; ++i) scanf("%d", &B[i]);
                           ~~~~~^~~~~~~~~~~~~

Subtask #1
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 2 ms 488 KB Output is correct
4 Correct 2 ms 488 KB Output is correct
5 Correct 2 ms 488 KB Output is correct
6 Correct 2 ms 488 KB Output is correct
7 Correct 2 ms 488 KB Output is correct
8 Correct 2 ms 488 KB Output is correct
9 Correct 2 ms 488 KB Output is correct
10 Correct 2 ms 552 KB Output is correct
11 Correct 2 ms 552 KB Output is correct
12 Correct 2 ms 568 KB Output is correct
13 Correct 2 ms 568 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 604 KB Output is correct
2 Correct 3 ms 604 KB Output is correct
3 Correct 4 ms 732 KB Output is correct
4 Correct 8 ms 1036 KB Output is correct
5 Correct 12 ms 1576 KB Output is correct
6 Correct 27 ms 2548 KB Output is correct
7 Correct 38 ms 3740 KB Output is correct