#include <stdio.h>

int main(void) {
    int n,a,b,c;
    printf("输入n:");
    scanf("%d",&n);
    a=n/100;
    b=(n-a*100)/10;
    c=n%10;
    for(int n=100;n<=1000;n++)
    {if(a*a*a+b*b*b+c*c*c==n)
     {printf("n是");}
    }
	return 0;
}