题目解析
给定n个人的活跃度,然后你去求出高活跃人群与低活跃人群,以及两种人群差最大是多少 (人群数要接近)
解题思路
贪心
将活跃度排序,最低的一半人一堆,其他的都是高活跃度的,算出人就好了
注: 这题我java过不了 (超时)
代码
import java.io.*;
import java.math.*;
import java.util.*;
public class Main
{
public static void main(String[] args) throws IOException
{
int n = sc.nextInt();
int shu[] = new int[n + 10];
int ans = 0; // 存所有人的活跃度
for (int i = 1; i <= n; i++)
{
shu[i] = sc.nextInt();
ans += shu[i];
}
Arrays.sort(shu, 1, n + 1);
int m = n / 2;
for (int i = 1; i <= n / 2; i++)
ans -= shu[i] + shu[i];
// 总活跃度减去两倍低活跃度的
// 减去一个是算高活跃度
// 减去两个是算高活跃与低活跃的差值
out.printf("Outgoing #: %d\n", (n + 1) / 2);
out.printf("Introverted #: %d\n", m);
out.printf("Diff = %d\n", ans);
out.flush();
out.close();
}
static Scanner sc = new Scanner(System.in);
static PrintWriter out = new PrintWriter(System.out);
}
c++
#include <iostream>
#include <algorithm>
#include <cmath>
using namespace std;
const int N = 1e5;
int shu[N + 10];
int main()
{
int n; scanf("%d", &n);
int ans = 0;
for(int i = 1; i <= n; i ++)
{
scanf("%d", &shu[i]);
ans += shu[i];
}
sort(shu + 1, shu + n + 1);
int m = n / 2;
for(int i = 1; i <= m; i ++)
ans -= shu[i] + shu[i];
printf("Outgoing #: %d\n", (n + 1) / 2);
printf("Introverted #: %d\n", m);
printf("Diff = %d\n", ans);
return 0;
}