Submission #7292

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
7292	2014-07-30 05:21:07	gs13068	경비원 (GA8_guard)	C++98	0 / 100	2000 ms	1104 KiB

guard

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#include<cstdio>
int a[2223];
int d[2223];
int dfs(int x)
{
  if(x>2222)return 1;
  int i,t,r=0;
  if(a[x])
  {
    t=x;
    for(i=2;i*i<=t;i++)
    {
      if(t%i==0&&d[i])break;
      while(t%i==0)t/=i;
    }
    if(i*i>t&&!d[t])
    {
      t=x;
      for(i=2;i*i<=t;i++)if(t%i==0)
      {
        d[i]=1;
        while(t%i==0)t/=i;
      }
      if(t>1)d[t]=1;
      r+=dfs(x+1)*a[x];
      t=x;
 
 
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