#include<stdio.h> int main(){ int result; int i,j; for(i = 10000;i<100000;i++){ int a,b,c,d,e,f,g,h; int sum; a = i/10000; b = i%10000; c = i/1000; d = i%1000; e = i/100; f = i%100; g = i/10; h = i%10; sum = a*b+c*d+e*f+g*h; if(sum == i){ printf("%d ",i); } } } 暴力解