```
#include<stdio.h>
#include<limits.h>
#define num 86090000
int a[5000000]={0};
short int s[99999999];
void sieve()
{
int i,j,p=sqrt(num);
int k=0;
a[k++]=2;
for(i=3;i<=num;i=i*i)
{
s[i]=1;
}
s[3]=0;
for(i=5;i<=num;i=i*i)
{
s[i]=1;
}
s[5]=0;
for(i=7;i<=num;i=i*i)
{
s[i]=1;
}
s[7]=0;
for(i=11;i<=num;i=i*i)
{
s[i]=1;
}
s[11]=0;
for(i=13;i<=num;i=i*i)
{
s[i]=1;
}
s[13]=0;
for(i=17;i<=num;i=i*i)
{
s[i]=1;
}
s[17]=0;
for(i=19;i<=p;i+=2)
{
if(s[i]==0)
{
// a[k++]=i;
for(j=i*i;j<=num;j+=i)
{
s[j]=1;
}
}
}
for(i=3;i<=num;i+=2)
{
if(s[i]==0)
a[k++]=i;
}
printf("%d",k);
return;
}
int main()
{
int n=0;
int q=0;
sieve();
scanf("%d",&q);
while(q--)
{
scanf("%d",&n);
printf("%d\n",a[n-1]);
}
return 0;
}
```

very awkward.. But it is giving segmentaion fault. in the all loops of the sieve() function. can you find how ?