博客
关于我
cf-A. Wet Shark and Odd and Even(水)
阅读量:627 次
发布时间:2019-03-13

本文共 1393 字,大约阅读时间需要 4 分钟。

A. Wet Shark and Odd and Even
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output

Today, Wet Shark is given n integers. Using any of these integers no more than once, Wet Shark wants to get maximum possible even (divisible by 2) sum. Please, calculate this value for Wet Shark.

Note, that if Wet Shark uses no integers from the n integers, the sum is an even integer 0.

Input

The first line of the input contains one integer, n (1 ≤ n ≤ 100 000). The next line contains n space separated integers given to Wet Shark. Each of these integers is in range from 1 to 109, inclusive.

Output

Print the maximum possible even sum that can be obtained if we use some of the given integers.

Sample test(s)
input
3 1 2 3
output
6
input
5 999999999 999999999 999999999 999999999 999999999
output
3999999996 题解:第一次打cf,写了两道水题,剩下的就完全没思路啊。。。 这个题让找给的数中可以加到的最大可以被2整除的数;水; 代码:
#include
#include
#include
#include
using namespace std;const int INF=0x3f3f3f3f;#define mem(x,y) memset(x,y,sizeof(x))#define SI(x) scanf("%d",&x)#define SL(x) scanf("%I64d",&x)#define PI(x) printf("%d",x)#define PL(x) printf("%I64d",x)#define P_ printf(" ")const int MAXN=1e5+100;int m[MAXN];int main(){ int n; while(~SI(n)){ __int64 ans=0,temp,top=0; for(int i=0;i

  

转载地址:http://kseaz.baihongyu.com/

你可能感兴趣的文章
mysql执行计划
查看>>
MySQL执行计划 EXPLAIN参数
查看>>
MySQL执行计划【explain】,看这一篇就够啦!
查看>>
Mysql执行计划字段解释
查看>>
mysql执行计划怎么看
查看>>
MySQL执行计划解读
查看>>
mysql执行顺序与索引算法
查看>>
mysql批量update优化_Mysql中,21个写SQL的好习惯,你值得拥有呀
查看>>
mysql批量update操作时出现锁表
查看>>
MYSQL批量UPDATE的两种方式
查看>>
mysql批量修改字段名(列名)
查看>>
MySQL批量插入数据遇到错误1213的解决方法
查看>>
mysql技能梳理
查看>>
MySQL报Got an error reading communication packets错
查看>>
Mysql报错Can‘t create/write to file ‘/tmp/#sql_3a8_0.MYD‘ (Errcode: 28 - No space left on device)
查看>>
MySql报错Deadlock found when trying to get lock; try restarting transaction 的问题解决
查看>>
MySQL报错ERROR 1045 (28000): Access denied for user ‘root‘@‘localhost‘
查看>>
Mysql报错Packet for query is too large问题解决
查看>>
mysql报错级别_更改MySQL日志错误级别记录非法登陆(Access denied)
查看>>
Mysql报错:too many connections
查看>>