摘要：#include<stdio.h>#include<stdlib.h>#include<string.h>int c[10];//6个F位2亿多，9位即可char arr[16]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F' 阅读全文

摘要：#include <stdio.h>#include <stdlib.h>int cmp(const void *a,const void *b){ return *(int *)a-*(int *)b;}int main(){ int num[250001]; int n,i; double ans;//float 过不了 scanf("%d",&n); for(i=0;i<n;i++) { scanf("%d",num+i); } qsort(num,n,sizeof(int),cmp); if(n%2==0) 阅读全文