#include<iostream> #include<cmath> using namespace std; int main() { for(int i=0;i<=256;i++) { int j=i*i; if(j<10) { cout<<i<<endl; } else if(j<100) { int g=j%10; int s=j/10; if(g==s) { cout<<i<<endl; } } else if(j<1000) { int g=j%10; int b=j/100; if(g==b) { cout<<i<<endl; } } else if(j<10000) { int g=j%10; int s=j/10%10; int b=j/100%10; int q=j/1000; if(g==q&&s==b) { cout<<i<<endl; } } else { int g=j%10; int s=j/10%10; int q=j/1000%10; int w=j/10000; if(g==w&&s==q) { cout<<i<<endl; } } } }