#include <stdio.h>
int main() {
char str[100];
int len=0;
char tmp;
scanf("%s",str);
while(str[len]!=0) {
len++;
}
for(int i=0; i<len/2; i++) {
tmp = str[i];
str[i]=str[len-1-i];
str[len-1-i]=tmp;
}
printf("%s",str);
return 0;
}
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