/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
int pol;
for (int i=0; i<=9; i++)
for (int j=i+1; j<=9; j++){
pol=j*1000+i*100+i*10+j;
}
}
}
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