# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|
14330 | | ggoh | 경비원 (GA8_guard) | C++98 | | 577 ms | 1516 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<cstdio>
#include<queue>
#include<algorithm>
int D[2][32768],i,j,k,a,t,s,r,u,X=1e9+7,p[15]={2,3,5,7,11,13,17,19,23,29,31,37,41,43,47};
std::vector<int>x[2222];
main()
{
scanf("%d",&a);
for(i=0;i<a;i++)
{
scanf("%d",&r);
u=0;
for(j=0;j<15;j++)
{
if(r%p[j]==0)
{
u+=(1<<j);
while(r%p[j]==0)r/=p[j];
}
}
x[r].push_back(u);//r: 1 또는 47 초과 소수
}
//47 초과 소수가 없는 수들에 대해서
u=0;
D[0][0]=1;
for(i=0;i<x[1].size();i++)
{
for(j=0;j<32768;j++)
{
D[1-u][j]=D[u][j];
if((j&x[1][i])==x[1][i])D[1-u][j]+=D[u][j-x[1][i]],D[1-u][j]%=X;
}
u=1-u;
}
//47 초과 있는 수에 대해서
for(i=49;i<2222;i+=2)
{
if(x[i].size())
{
for(j=0;j<32768;j++)
{
D[1-u][j]=D[u][j];
for(k=0;k<x[i].size();k++)
{
if((j&x[i][k])==x[i][k])
{
D[1-u][j]+=D[u][j-x[i][k]];
D[1-u][j]%=X;
}
}
}
u=1-u;
}
}
s=0;
for(i=0;i<32768;i++)s+=D[u][i],s%=X;
printf("%d",(s-a-1+X)%X);
}
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