zoj 1284 Perfection

#include "stdio.h"int main(){int num, i, sum;printf("PERFECTION OUTPUT\n");while (scanf("%d", &num) && num){sum = 0;for (i = 1; i < num; i++){if (num % i == 0)sum += i;}if (sum == num){printf("%5d  PERFECT\n", num);}else if (sum > num)printf("%5d  ABUNDANT\n", num);elseprintf("%5d  DEFICIENT\n", num);}printf("END OF OUTPUT\n");}