LUFEE666 @ 2023-09-27 22:40:58
#include<stdio.h>
#include<math.h>
bool isprime(int x){
for(int i=2;i<=sqrt(x);i++)
{
if(x%i==0)
{
return false;
}
}
return true;
}
bool huiwen(int x)
{
int c=0;
while (x>c)
{
c=c*10+x%10;
x/=10;
}
return x==c||x==c/10;
}
int main(){
int a,b;
scanf("%d%d",&a,&b);
if(a%2==0)
{
a+=1;
}
for(a;a<=b;a+=2)
{
if(a%2==0)
{
continue;
}
if(isprime(a)&&huiwen(a))
{
printf("%d\n",a);
}
}
return 0;
}
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by Jianbing_Juan @ 2023-09-27 23:02:25
试试改inline
,开吸氧,快速输出