Submission #7410

#	Time	Username	Problem	Language	Result	Execution time	Memory
7410		gs13068	백신 (KOI13_vaccine)	C++98	24 / 24	120 ms	4604 KiB

vaccine

#include<cstdio>
#include<algorithm>

int a[100][1000];
int an[100];

std::pair<long long,long long> key[100][2000];

std::pair<long long,long long> hash(int i,int j,int k)
{
  std::pair<long long,long long> res;
  int t;
  res.first=res.second=0;
  for(t=0;t<k;t++)
  {
    res.first=res.first*10007+a[i][j+t];
    res.second=res.second*10009+a[i][j+t];
  }
  return res;
}

std::pair<long long,long long> hash2(int i,int j,int k)
{
  std::pair<long long,long long> res;
  int t;
  res.first=res.second=0;
  for(t=1;t<=k;t++)
  {
    res.first=res.first*10007+a[i][j+k-t];
    res.second=res.second*10009+a[i][j+k-t];
  }
  return res;
}

int main()
{
  int i,j,n,m;
  scanf("%d%d",&n,&m);
  for(i=0;i<n;i++)
  {
    scanf("%d",&an[i]);
    for(j=0;j<an[i];j++)scanf("%d",&a[i][j]);
  }
  for(i=0;i<n;i++)for(j=0;j<an[i]-m+1;j++)
  {
    key[i][j*2]=hash(i,j,m);
    key[i][j*2+1]=hash2(i,j,m);
  }
  for(i=0;i<n;i++)std::sort(key[i],key[i]+2*(an[i]-m+1));
  for(j=0;j<2*(an[0]-m+1);j++)
  {
    for(i=1;i<n;i++)if(!std::binary_search(key[i],key[i]+2*(an[i]-m+1),key[0][j]))break;
    if(i==n)break;
  }
  if(j==2*(an[0]-m+1))puts("NO");
  else puts("YES");
}

• Subtask 1: 2.64 / 2.64
• Subtask 2: 3.12 / 3.12
• Subtask 3: 3.6 / 3.6
• Subtask 4: 4.32 / 4.32
• Subtask 5: 4.8 / 4.8
• Subtask 6: 5.52 / 5.52