#include<stdio.h> #include<math.h> int main(){ int m,n,i,j,k=1; scanf("%d %d",&m,&n); for(i=m;i<=n;i++){ int flag=0; for(j=2;j<=sqrt(i);j++){ if(i%j==0){ flag=1; break; } } if(flag==0){ int num=i,sum=0; while(num>0){ sum=sum*10+num%10; num=num/10; } if(sum==i){ printf("%6d",i); if(k%5==0) printf("\n"); k++; } } } } |
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