zoj 2172 Symmetric Order

#include<stdio.h>#include<string.h>int main(){int i,j,flag,n,times,num;char str[15][26];char ch[26];times =  1;while(scanf("%d",&n)&&n){flag = 0;i = 0;j = n - 1;num = n;while(n--){scanf("%s",ch);if(flag == 0){strcpy(str[i],ch);flag = 1;i++;}else{strcpy(str[j],ch);flag = 0;j--;}}printf("SET %d\n",times);for(i = 0;i<num;i++)printf("%s\n",str[i]);times++;}return 0;}