#include<iostream>

using namespace std;

(相关资料图)

int main(){

int a,ge,shi,bai,qian;

a=9876;

ge=a%10;

shi=(a%100)/10;

bai=(a%1000)/100;

qian=a/1000

a=ge*1000+shi*100+bai*10+qian;

cout<<a<<endl;

}