Submission #27648

#	Time	Username	Problem	Language	Result	Execution time	Memory
27648		samir_droubi	Carnival (CEOI14_carnival)	C++14	100 / 100	29 ms	2020 KiB

carnival

#include <bits/stdc++.h>
using namespace std;
const int mxn=155;
int ty[mxn];
int n;
int sz=0;
int query(int l,int r)
{
  int nm=0;
  for(int i=l;i<=r;++i)
  {
    if(ty[i]==0)
      ++nm;
  }
  printf("%d",nm);
  for(int i=l;i<=r;++i)
  {
    if(ty[i]==0)
      printf(" %d",i);
  }
  printf("\n");
  fflush(stdout);
  int ans;
  scanf("%d",&ans);
  return ans;
}
int bs(int num)
{
  int l=1;
  int r=n;
  int in=-1;
  while(l<=r)
  {
    int md=(l+r)/2;
    int x=query(1,md);
    if(x>num)
      r=md-1;
    else 
    {
      l=md+1;
      in=md;
    }
  }
  return in;
}
int main()
{
  scanf("%d",&n);
  sz=query(1,n)-1;
  int cur=1;
  while(sz)
  {
    while(true)
    {
      int in=bs(sz);
      if(in==n)break;
      ty[in+1]=cur;
    }
    ++cur;
    --sz;
  }
  for(int i=1;i<=n;++i)
  {
    if(ty[i]==0)
      ty[i]=cur;
  }

  printf("0");
  for(int i=1;i<=n;++i)
    printf(" %d",ty[i]);
  return 0;
}

Compilation message (stderr)

carnival.cpp: In function 'int query(int, int)':
carnival.cpp:24:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&ans);
                   ^
carnival.cpp: In function 'int main()':
carnival.cpp:48:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
                 ^

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20