#include<stdio.h>
#include <string.h>

int strongNum(int element, int len, char *p, int num){
	for(int i = element;i < len;i++){
		if(num < p[i]){
			num = p[i];
			element = i;	
		}
	}
	return element;
} 


int main(){
	// 入力された値
	char str[10];
	scanf("%s", str);
	// 入力された値の文字数
	int len = strlen(str);
	char *p = str;
	
	int num = 0;
	int element = 0;
	int count = 0;
	while(element == count){
		element = strongNum(element,len,p,num);
		count++;
	}
	int tmp = p[element + 1];
	p[element + 1] = p[count + 1];
	p[count + 1] = tmp;
	
	printf("%s",str);
}