Wooden Sticks(贪心)

Posted 2020-11-10 龙龙666666

Wooden Sticks.

win the wooden spoon：成为末名。

题目地址：http://poj.org/problem?id=1065

There is a pile of n wooden sticks.

a woodworking machine：木工机器。

setup time：启动时间。

my codes:

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;

int t,n;
struct stick
{
	int l,w;
}sti[5100];
bool used[5100];
bool cmp(stick a,stick b)
{
	return (a.l<b.l)||(a.l==b.l && a.w<b.w); 
}

int main()
{
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d",&n);
		for(int i=0;i<n;i++) scanf("%d%d",&sti[i].l,&sti[i].w);
		sort(sti,sti+n,cmp);
		
		memset(used,false,sizeof(used));
		int ans=0;
		for(int i=0;i<n;i++)
		{
			if(!used[i])
			{
				ans++;
				int tempW=sti[i].w;
				for(int j=i+1;j<n;j++)
				{
					if(!used[j] && sti[j].w>=tempW)
						used[j]=true,tempW=sti[j].w;
				}
			}
		}
		printf("%d\n",ans);
	}
	return 0;
}

Ref:https://blog.csdn.net/u012278856/article/details/32914859