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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#469092 | #8566. Can We Still Qualify For Semifinals? | PhantomThreshold# | AC ✓ | 1ms | 3820kb | C++20 | 3.0kb | 2024-07-09 13:39:25 | 2024-07-09 13:39:25 |
Judging History
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