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3421怎么回runtime error ???#include <cstdio>
#include <string>
#define Max 1024*1024
int pre[Max+1];
void prem()
{
int j;
for(int i=2;i*i<=Max;i++)
{
if(!pre[i])
{
j=i*i;
while(j<=Max)
{pre[j]=1;j=j+i; }
}
}
}
int fac(int i)
{
int k=1;
for(int j=1;j<=i;j++)
k*=j;
return k;
}
int main()
{
prem();
int a[21];
long n;
while(scanf("%d",&n)==1)
{ memset(a,0,sizeof(a));
int i,t=1,sum=0;
for(i=2;i<=Max;i++)
if(!pre[i])
{
if(n%i==0) t++;
while(n%i==0)
{
n=n/i;
a[t]++;
sum++;
}
}
i=1;
int temp=fac(sum);
while(i<=sum)
{
if(a[i]!=0)
temp/=fac(a[i]);
i++;
}
printf("%d% d%\n",sum,temp);
}
return 0;
}
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