小兔子和小雞在一個籠子裏

#include <stdio.h> void main() { int num; scanf("%d",&num); if (num%2!=0) { printf("NULL"); }else if (num%4==0) { printf("%d\t%d",num/4,num/2); }else{ printf("%d\t%d",num/4+1,num/2); } }

>>阅读原文<<