#include<stdio.h> #include <math.h> #include <string.h> #include <ctype.h> int sun(int n) { int i,sum=0; for(i=1;i<n;i++) if(n%i==0) sum+=i; return sum; } int main() { int m,n,i,cnt=0; scanf("%d %d",&m,&n); for(i=m;i<n;i++) { if(sun(sun(i))==i) { if(i<sun(i)) printf("%d %d\n",i,sun(i)); } } return 0; } |
Double click to view unformatted code.