//回文数的判断 #include<iostream> using namespace std; int main() { int zoomx; cin>>zoomx; for(int i=0;i<=zoomx;i++){ int num=i*i; int num1=num; int sum=0; while(num){ sum=sum*10+num%10; num/=10; } if(num1==sum)cout<<num1<<endl; } return 0; }