#include <iostream> using namespace std; int main() { int ge,shi,bai,qian; int fan; for(int i=1000;i<10000;i++){ qian=i/1000; bai=(i-qian*1000)/100; shi=(i-qian*1000-bai*100)/10; ge=i%10; fan=ge*1000+shi*100+bai*10+qian; if(fan==i*9)cout<<i<<endl; } }