#include <stdio.h>
#include <string.h>
int main()
{
const int maxdigits = 20;
int num=-123456789, rem = 0;
char res[maxdigits + 1];
res[maxdigits] = 0;
int lastpos = maxdigits;
while(num!=0)
{
rem = num%6;
res[lastpos--] = rem + '0';
num = num/6;
}
printf("%s%s", (num
< 0)?"-":"", res
+ lastpos
+ 1); }
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