#include <stdio.h>
#include<string.h>
int main() {
char nums[1000]={0};
gets(nums);
int left = 0,right = strlen(nums)-1;
while(left<right)
{
char temp = nums[left];
nums[left] = nums[right];
nums[right] = temp;
left++;
right--;
}
printf("%s",nums);
}

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