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#469092#8566. Can We Still Qualify For Semifinals?PhantomThreshold#AC ✓1ms3820kbC++203.0kb2024-07-09 13:39:252024-07-09 13:39:25

Judging History

你现在查看的是最新测评结果

  • [2024-07-09 13:39:25]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:3820kb
  • [2024-07-09 13:39:25]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
namespace dinic
{
	const int MAXN=111,MAXM=2333;
	struct edge
	{
		int v,f;
		edge *next,*rev;
	}*h[MAXN],pool[MAXM*2];
	int top;
	void addedge(int u,int v,int c)
	{
		edge *tmp=&pool[++top];tmp->v=v;tmp->next=h[u];h[u]=tmp;tmp->f=c;
		edge *pmt=&pool[++top];pmt->v=u;pmt->next=h[v];h[v]=pmt;pmt->f=0;
		tmp->rev=pmt;pmt->rev=tmp;
	}
	int level[MAXN],S=100,T=101;
	bool mklevel()
	{
		queue<int> q;
		memset(level,-1,sizeof(level));
		q.push(S);
		level[S]=0;
		while(not q.empty())
		{
			int u=q.front();q.pop();
			for(edge *tmp=h[u];tmp;tmp=tmp->next)
			{
				if(level[tmp->v]==-1 and tmp->f)
				{
					level[tmp->v]=level[u]+1;
					q.push(tmp->v);
				}
			}
			if(level[T]!=-1)return true;
		}
		return false;
	}
	int dinic(int u,int minf)
	{
		if(u==T)return minf;
		int totf=0;
		for(edge *tmp=h[u];tmp;tmp=tmp->next)
		{
			if(tmp->f and level[tmp->v]==level[u]+1)
			{
				int f=dinic(tmp->v,min(tmp->f,minf-totf));
				tmp->f-=f;tmp->rev->f+=f;totf+=f;
				if(totf==minf)return totf;
			}
		}
		if(totf==0)level[u]=-1;
		return totf;
	}
	void init()
	{
		memset(h,0,sizeof(h));
		top=0;
	}
	int gao()
	{
		int totf=0;
		while(mklevel())totf+=dinic(S,0x7fffffff);
		return totf;
	}
}
int main()
{
	ios_base::sync_with_stdio(false);
	int T;
	cin>>T;
	while(T--)
	{
		const int n=10,m=45;
		deque<int> a={2,3,4,5,6,7,8,9,10};
		vector<pair<int,int>> edges;
		for(int i=1;i<n;i++)
		{
			edges.emplace_back(1,a[8]);
			edges.emplace_back(a[0],a[7]);
			edges.emplace_back(a[1],a[6]);
			edges.emplace_back(a[2],a[5]);
			edges.emplace_back(a[3],a[4]);
			a.push_front(a.back());a.pop_back();
		}
		int k;
		cin>>k;
		string s;
		cin>>s;
		vector<int> score(n+5);
		for(int i=0;i<k;i++)
		{
			if(s[i]=='1')score[edges[i].first]++;
			else score[edges[i].second]++;
		}
		vector<pair<int,int>> prs;
		for(int i=k;i<m;i++)
		{
			if(edges[i].first==1)score[1]++;
			else if(edges[i].second==1)score[1]++;
			else
			{
				prs.emplace_back(i+1,m+edges[i].first);
				prs.emplace_back(i+1,m+edges[i].second);
			}
		}
		auto sol=[&](int x,int y,int z)
		{
			dinic::init();
			for(int i=k;i<m;i++)
			{
				dinic::addedge(dinic::S,i+1,1);
			}
			for(auto [u,v]:prs)
			{
				dinic::addedge(u,v,1);
			}
			for(int i=1;i<=n;i++)
			{
				if(i!=x and i!=y and i!=z)
				{
					if(score[i]>score[1])return false;
					dinic::addedge(m+i,dinic::T,score[1]-score[i]);
				}
				else
				{
					dinic::addedge(m+i,dinic::T,111);
				}
			}
			int res=dinic::gao();
//			cerr<<"solve "<<x<<' '<<y<<' '<<z<<' '<<res<<endl;
			if(res==(int)prs.size()/2)return true;
			return false;
		};
		int ok=0;
		for(int i=2;i<=n and not ok;i++)
		{
			for(int j=2;j<i and not ok;j++)
			{
				for(int k=2;k<j;k++)
				{
					if(sol(i,j,k))
					{
						ok=1;
						break;
					}
				}
			}
		}
		if(ok)cout<<"YES\n";
		else cout<<"NO\n";
		
	}
	
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3796kb

input:

3
3
111
25
1000010101111111111010100
35
01111011110111101111011110111101111

output:

YES
YES
NO

result:

ok 3 token(s): yes count is 2, no count is 1

Test #2:

score: 0
Accepted
time: 0ms
memory: 3544kb

input:

10
16
0110000001010100
17
01111000110110101
15
001100010101111
16
0010101010011100
19
0000000100010110100
16
0011101010011100
18
011110010001100000
18
000110101001100011
20
01100010000100100100
15
001000111001101

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #3:

score: 0
Accepted
time: 1ms
memory: 3492kb

input:

10
37
0110000001010100011101001011100110001
39
000100111101101001100101101000000000100
35
00111000100111100101011010111100100
33
010000010001110010110001101110001
30
000100010100000010010110101010
31
0000101000011010101001010000000
44
00001000000111101011010110000101100011000100
42
01111011110001001...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 0, no count is 10

Test #4:

score: 0
Accepted
time: 1ms
memory: 3560kb

input:

10
23
01100000010101000111010
38
01111001100011000101011110101001101001
27
010000000001001001110001001
26
01101001110011101101000110
8
00001000
22
0110100110001110110001
9
000100010
24
000000100101101010100100
6
011000
29
01101010100101000000000000100

output:

YES
NO
NO
NO
YES
YES
YES
YES
YES
NO

result:

ok 10 token(s): yes count is 6, no count is 4

Test #5:

score: 0
Accepted
time: 1ms
memory: 3628kb

input:

10
30
011000000101010001110100101110
29
01001010010011101110010110010
28
0110000000001000101101001001
23
01101001110011101101000
23
01000001000111001011000
24
011110001000010001010000
23
01001011010101001000011
30
000110011001010010000000000010
24
000110111001110011000011
28
000110001000011011110110...

output:

NO
NO
NO
YES
YES
YES
YES
NO
YES
NO

result:

ok 10 token(s): yes count is 5, no count is 5

Test #6:

score: 0
Accepted
time: 1ms
memory: 3796kb

input:

10
21
011000000101010001110
21
000110110101001010010
22
0111101101001100101101
24
000000001000101011000101
21
011010011100111011010
20
00110000010001101010
21
010010111100010000100
24
010100000100011010110010
23
00001010000110101010010
25
0000000000001000001101110

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #7:

score: 0
Accepted
time: 1ms
memory: 3624kb

input:

10
26
01100000010101000111010010
26
01101010010100100111011100
26
00110010110100000000010010
27
011100010101110010110101101
30
010100011000001000110101001100
30
011110001000010001010000001001
28
0101100101000010100001101010
26
00101000000000000100000110
28
0110101101010000111000110001
27
00011011110...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 0, no count is 10

Test #8:

score: 0
Accepted
time: 1ms
memory: 3820kb

input:

10
25
0010100010011010111001111
26
01001010100010101010001010
26
01111001110000100111011110
26
10001000100110101110011110
26
10101010100110101110011110
27
110100010101010011010111001
27
101010101001101011100111101
31
1000010001010100110001011011110
37
1000101111000100110000011000000100101
40
1000101...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 0, no count is 10

Test #9:

score: 0
Accepted
time: 1ms
memory: 3564kb

input:

10
26
00001010000000000000000000
26
00000010000000000000000000
26
01101010100010101011011110
26
00011011110111101111011110
27
001100110101011001110111101
27
000110111101111011110111101
28
0110001001000010011101111011
29
01000000010001101000011110111
29
01000000010000101101011110111
30
01000011110111...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
NO

result:

ok 10 token(s): yes count is 9, no count is 1

Test #10:

score: 0
Accepted
time: 1ms
memory: 3800kb

input:

10
1
0
2
00
10
0001101110
14
00101010000011
20
00000010010100101010
25
0000000101000100100001111
35
01110011010000101010000010010000100
40
0000100110001110101100001001000110000001
44
01011010110010101110011000010001010011100011
45
010010001001010011110111101011011000000100001

output:

YES
YES
YES
YES
YES
YES
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 6, no count is 4

Extra Test:

score: 0
Extra Test Passed