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/*
ID: mytbk921
LANG: C
TASK: palsquare
*/
#include <stdio.h>
const char numMap[]="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
int convert(int x,int base,int dest[])
//convert integer x to an array,return the length
{
int i=0;
while (x){
dest[i++]=x%base;
x/=base;
}
return i;
}
int isReverse(int a[],int len) //check is an array is pan
{
int i;
for (i=0;i<len/2;i++){
if (a[i]!=a[len-1-i])
return 0;
}
return 1;
}
int main()
{
int i,j;
int base;
int origNum[32],aNum[32],origLen,len;
FILE *fin=fopen("palsquare.in","r");
FILE *fout=fopen("palsquare.out","w");
fscanf(fin,"%d",&base);
fclose(fin);
for (i=1;i<=300;i++){
len=convert(i*i,base,aNum);
if (isReverse(aNum,len)){
origLen=convert(i,base,origNum); //used to print i
for (j=origLen-1;j>=0;j--)
fprintf(fout,"%c",numMap[origNum[j]]);
fputc(' ',fout);
for (j=len-1;j>=0;j--) //print i*i
fprintf(fout,"%c",numMap[aNum[j]]);
fputc('\n',fout);
}
}
fclose(fout);
return 0;
}
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