#include<stdio.h>
#define N 10
int GetNumber(int *, int);
int main(void)
{
int arr[N], count, num, i;
scanf("%d", &num);
count = GetNumber(arr, num);
for(i = 0; i < count; i++)
printf("%d", arr[i]);
putchar('\n');
}
int GetNumber(int *arr, int num)
{
int count = 0, i, tmp;
while(num)
{
arr[count++] = num % 10;
num /= 10;
}
for(i = 0; i < count / 2 ; i++)
{
tmp = arr[i];
arr[i] = arr[count - i - 1];
arr[count - i - 1] = tmp;
}
return count;
}
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