635div2

A秒

#include <bits/stdc++.h>
using namespace std;
int main ()
{
	ios::sync_with_stdio(false);
	int T;
	cin>>T;
	while(T--)
	{
		int a,b,c,d;
		cin>>a>>b>>c>>d;
		cout<<b<<" "<<c<<" "<<c<<endl; 
	}
	return 0;
}

B

#include <bits/stdc++.h>
using namespace std;
int main ()
{
	ios::sync_with_stdio(false);
	int T;
	cin>>T;
	while(T--)
	{
		long long x,a,b,f=0;
		cin>>x>>a>>b;
		for(int i=0; i<a&&f==0; i++)
		{
			if(x<=b*10) f=1;
			else 
			{
				x/=2;
				x+=10;
			}
			//cout<<x<<endl;
		}
		if(x<=b*10) f=1;
		if(f==0) cout<<"NO"<<endl;
		else cout<<"YES"<<endl;
	}
	return 0;
}

C
啊啊啊比赛的时候wa了4次，起床之后发现最后一个数组开小了（抓狂）QAQ

#include <bits/stdc++.h>
using namespace std;
vector<int> a[200005],y[200005];
int dis[200005],c[200005],n[200005];
void dist(int p)
{
	//cout<<p<<endl;
	int len=a[p].size();
	for(int i=0; i<len; i++)
	{
		int t=a[p].back();
		a[p].pop_back();
		if(dis[t]||t==1) continue;
		dis[t]=dis[p]+1;
		dist(t);
	}
	return;
}
void lens(int p)
{
	//cout<<p<<endl;
	int len=y[p].size();
	if(p!=1)
	for(int i=0; i<len; i++)
	{
		int t=y[p].back();
		y[p].pop_back();
		if(c[t]!=1||t==1) continue;
		c[p]++;
		lens(t);
		c[p]+=c[t]-1;		
	}
	else
	{
		for(int i=0; i<len; i++)
		{
			int t=y[p].back();
			y[p].pop_back();
			if(t==1) continue;
			lens(t);
			c[p]+=c[t];		
		}
	}
}
struct rule
{
	bool operator()(const &a1,const &a2) const
	{
		return dis[a1]-c[a1]>dis[a2]-c[a2];
	}
	
};
int main ()
{
	ios::sync_with_stdio(false);
	int T;
	//cin>>T;
	//while(T--)
	//{
		int x,k,t,b;
		long long sum=0;
		cin>>x>>k;
		for(int i=0; i<x-1; i++)
		{
			cin>>t>>b;
			a[t].push_back(b);
			a[b].push_back(t);
			y[t].push_back(b);
			y[b].push_back(t);
		}
		for(int i=1; i<=x; i++)
		{
			dis[i]=0;
			c[i]=1;
			n[i]=i;
		}
		c[1]=0;
		dist(1);
		lens(1);
		for(int i=2; i<x+1; i++)
		c[i]--;
		sort(n+1,n+1+x,rule());
		//for(int j=1; j<=x; j++)
		//cout<<n[j]<<" "<<dis[n[j]]-c[n[j]]<<endl;
		for(int i=1; i<=k; i++)
		sum+=dis[n[i]]-c[n[i]];
		cout<<sum<<endl;
	//}
	return 0;
}

标签：200005,int,back,long,cin,635div2,push
来源： https://blog.csdn.net/Federal_ding/article/details/105549800