#include <stdio.h>

void main(void) {
	char str[1000] = "a";
	scanf("%s",str);
	int boundary = 0;
	for(int i = 0 ; str[i] != '\0';i++){
		if( 10 > str[i] - '0' && 0 <= str[i] - '0'){
			boundary = i;
			break;
		}
	}
	int i = boundary-1;
	while(str[i] != '\0'){
		printf("%c" ,str[i]);
		
		if(i == 0){
			i = boundary;
		}else if(boundary > i){
			i--;
		}else{
			i++;
		}
	}
}