#include<stdio.h>
#include<math.h>
#include<math.h>
int main()
{
int num,i,a,stutas=0;
scanf("%d",&num);
a = sqrt(num);
if(num<4)
printf("the num is a sushu\n");
else
{
for(i=2; i<a; i++)
{
if((num%i)==0)
{
printf("the num is not a sushu \n");
stutas = 1; //stutas很重要。
break;
}
}
}
if(stutas == 1)
printf("the num is not a sushu \n");
else
printf("the num is a sushu \n");
{
int num,i,a,stutas=0;
scanf("%d",&num);
a = sqrt(num);
if(num<4)
printf("the num is a sushu\n");
else
{
for(i=2; i<a; i++)
{
if((num%i)==0)
{
printf("the num is not a sushu \n");
stutas = 1; //stutas很重要。
break;
}
}
}
if(stutas == 1)
printf("the num is not a sushu \n");
else
printf("the num is a sushu \n");
return 0;
}
}