Submission #7588

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
7588	2014-08-11 13:56:57	dohyun0324	경비원 (GA8_guard)	C++98	21 / 100	372 ms	14388 KiB

guard

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#include<stdio.h>
int cnt,n,a[2510],m,ch[30],w,b[2510],cnt2;
long long int dap,d[100][17000];
int p[20]={0,2,3,5,7,11,13,17,19,23,29,31,37,41,43};
int gcd(int x,int y)
{
    if(x%y==0) return y;
    return gcd(y,x%y);
}
void dfs(int x)
{
    int i;
    if(x==n)
    {
        if(w>=2)
        {
            cnt++;
        }
        return;
    }
    dfs(x+1);
    for(i=1;i<=w;i++)
    {
        if(gcd(ch[i],a[x+1])!=1) break;
    }
    if(i!=w+1) return;
    ch[++w]=a[x+1];
    dfs(x+1);
    ch[w--]=0;
}
 
 
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• Subtask 1: 8 / 8
• Subtask 2: 13 / 13
• Subtask 3: 0 / 16
• Subtask 4: 0 / 27
• Subtask 5: 0 / 36