Ehab Fails to Be Thanos

https://codeforces.com/contest/1174/problem/A

题解：

1、排序；

2、判断前面n个和后面n个是否相同，相同-1；

/*
*@Author:   STZG
*@Language: C++
*/
#include <bits/stdc++.h>
#include<iostream>
#include<algorithm>
#include<cstdlib>
#include<cstring>
#include<cstdio>
#include<string>
#include<vector>
#include<bitset>
#include<queue>
#include<deque>
#include<stack>
#include<cmath>
#include<list>
#include<map>
#include<set>
//#define DEBUG
#define RI register int
#define endl "\n"
using namespace std;
typedef long long ll;
//typedef __int128 lll;
const int N=100000+10;
const int M=100000+10;
const int MOD=1e9+7;
const double PI = acos(-1.0);
const double EXP = 1E-8;
const int INF = 0x3f3f3f3f;
int t,n,m,k,p,l,r,u,v;
int ans,cnt,flag,temp,sum1,sum2;
int a[N];
char str;
struct node{};
int main()
{
#ifdef DEBUGfreopen("input.in", "r", stdin);//freopen("output.out", "w", stdout);
#endif//ios::sync_with_stdio(false);//cin.tie(0);//cout.tie(0);//scanf("%d",&t);//while(t--){scanf("%d",&n);for(int i=1;i<=2*n;i++)scanf("%d",&a[i]);sort(a+1,a+2*n+1);for(int i=1;i<=n;i++)sum1+=a[i],sum2+=a[i+n];;if(sum1==sum2){cout<<-1<<endl;}else{for(int i=1;i<=2*n;i++)printf("%d%c",a[i]," \n"[i==2*n]);}//}#ifdef DEBUGprintf("Time cost : %lf s\n",(double)clock()/CLOCKS_PER_SEC);
#endif//cout << "Hello world!" << endl;return 0;
}

Ehab Fails to Be Thanos相关推荐

Codeforces Round #563 (Div. 2)/CF1174
Codeforces Round #563 (Div. 2)/CF1174 CF1174A Ehab Fails to Be Thanos 其实就是要\(\sum\limits_{i=1}^n a_i ...
GitHub有趣分享：Thanos（灭霸命令）
Thanos.sh是一个开源的个灭霸命令,可随机删除电脑上一半文件.不知道这个命令有多少人执行过!? GitHub地址:https://github.com/hotvulcan/Thanos.sh P ...
Codeforces 862B - Mahmoud and Ehab and the bipartiteness
862B - Mahmoud and Ehab and the bipartiteness 思路:先染色,然后找一种颜色dfs遍历每一个点求答案. 代码: #include<bits/stdc+ ...
Codeforces Round #649 (Div. 2)C. Ehab and Prefix MEXs[排列的构造]
C. Ehab and Prefix MEXs 题目大意: 解题思路:题目说保证a数组是非递减的,那么如果某位置a[i]!=a[i−1]a[i]!=a[i-1]a[i]!=a[i−1]那么这个位置ii ...
mysql删除有外链索引数据,Cannot delete or update a parent row: a foreign key constraint fails 问题的解决办法
mysql删除有外链索引数据,Cannot delete or update a parent row: a foreign key constraint fails 问题的解决办法参考文章: (1 ...
Py_Initialize fails - unable to load the file system codec
Py_Initialize fails - unable to load the file system codec https://stackoverflow.com/questions/56947 ...
关于mysql数据库的外键插入报错：Cannot add or update a child row: a foreign key constraint fails，完整性问题
关于mysql的外键插入报错:Cannot add or update a child row: a foreign key constraint fails..... 首先确定sql语句的正确然后 ...
一文详解 Prometheus 的高可用方案：Thanos
点击上方"朱小厮的博客",选择"设为星标" 后台回复"书",获取背景在高可用 prometheus:问题集锦文章中有简单提到 Prome ...
D：Ehab the Xorcist
或许更好的阅读体验 Ehab the Xorcist 思路刚看时确实是一脸懵,最怕的就是这种构造题了,然后细想好像能写啊. 判断不可行的条件,只有两种情况: 一.v<uv < uv< ...

Ehab Fails to Be Thanos

Ehab Fails to Be Thanos相关推荐

最新文章

热门文章