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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#158358#7107. Chaleurucup-team918#AC ✓816ms237564kbC++203.0kb2023-09-02 16:27:182023-09-02 16:27:19

Judging History

你现在查看的是最新测评结果

  • [2023-09-02 16:27:19]
  • 评测
  • 测评结果:AC
  • 用时:816ms
  • 内存:237564kb
  • [2023-09-02 16:27:18]
  • 提交

answer

//#pragma GCC optimize(2)
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define N 100005
#define pii pair<int,int>
#define mp make_pair
#define pb push_back
#define ld long double
#define ls (rt<<1)
#define rs ((rt<<1)|1)
#define SZ(x) (int)(x.size())
#define debug cout<<endl<<"ff"<<endl
#define YES cout<<"YES"<<endl
#define NO cout<<"NO"<<endl
#define fi first
#define se second
#define INF 1e9
#define pq priority_queue
#define rep(x,a,b) for(int x=a;x<=b;x++)
/*int fac[N],ifac[N];
int C(int n,int m){
	if(m>n||m<0||n<0) return 0;
	return fac[n]*ifac[n-m]%mod*ifac[m]%mod;
}
void init(){
	fac[0]=1;
	for(int i=1;i<N;i++) fac[i]=fac[i-1]*i%mod;
	ifac[N-1]=qpow(fac[N-1],mod-2);
	for(int i=N-2;i>=0;i--) ifac[i]=ifac[i+1]*(i+1)%mod;
}*/
/*struct node{
	int nxt,to;
}e[N<<1];
int cnt=1,head[N];
inline void add(int x,int y){
	e[++cnt].nxt=head[x];
	head[x]=cnt;
	e[cnt].to=y;
}*/
inline int lowbit(int x){return x&(-x);}
inline int read(){
  int x=0,t=1;char ch=getchar();
  while(ch<'0'||ch>'9'){
    if(ch=='-') t=-1;
    ch=getchar();
  }
    while(ch>='0'&&ch<='9'){
        x=(x<<1)+(x<<3)+(ch-'0');
        ch=getchar();
    }
    return x*t;
}
inline void write(int x){
	if(x<0) putchar('-'),x=-x;
	if(x>=10) write(x/10);
	putchar(x%10+'0');
}
int m,T,n,deg[N],dp[N][452],fl[N],in[N];
bool pre[N][452];
vector<int>g[N];
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	cin>>T;
	while(T--){
		cin>>n>>m;
		for(int i=0;i<=n;i++) deg[i]=0,g[i].clear(),in[i]=fl[i]=0;
		for(int i=1;i<=m;i++){
			int x,y;cin>>x>>y;
			deg[x]++;deg[y]++;
			g[x].pb(y);g[y].pb(x);
		}
		if(n==1){
			cout<<"1 1\n";
			continue;
		}
		dp[0][0]=m;int w=(int)sqrt(2*m)+2;
		for(int i=1;i<=w;i++) dp[0][i]=-INF;
		for(int i=1;i<=n;i++){
			int lim=min(i,w);
			for(int j=0;j<=lim;j++) dp[i][j]=-INF;
			for(int j=0;j<=lim;j++){
				if(dp[i-1][j]<j*(j-1)/2) continue;
				if(dp[i-1][j]>dp[i][j+1]){
					dp[i][j+1]=dp[i-1][j];
					pre[i][j+1]=1;
				}
				if(dp[i-1][j]-deg[i]>dp[i][j]){
					dp[i][j]=dp[i-1][j]-deg[i];
					pre[i][j]=0; 
				}
			}
		}//1表示i在左边点 
		int s1=0,s2=0,fl1=0,fl2=0;
		int now=-1;
		for(int i=min(n,w);i>=0;i--)
			if(dp[n][i]==i*(i-1)/2){
				now=i;
				break;
			}
		assert(now!=-1); 
		int tmp=now;
		for(int i=n;i>=1;i--){
			fl[i]=pre[i][now];
			now-=fl[i];
		}
		/*for(int i=1;i<=n;i++){
			if(fl[i]==0){
				for(auto t:g[i])
					assert(fl[t]==1);
			}else{
				int sum=0;
				for(auto t:g[i])
					sum+=fl[t];
				assert(sum==tmp-1);
			}
		}*/
		for(int i=1;i<=n;i++){
			if(fl[i]==0&&deg[i]==tmp)	
				fl1=1;
			if(fl[i]==1&&deg[i]==tmp-1)
				fl2=1;
		}
		if(fl1==0) s1=1;
		if(fl2==0) s2=1;
		for(int i=1;i<=n;i++){
			if(fl1==1){
				if(fl[i]==0&&deg[i]==tmp)
					s1++;
			}else{
				if(fl[i]==0&&deg[i]==tmp-1)
					s1++;
			}
			if(fl2==1){
				if(fl[i]==1&&deg[i]==tmp-1)
					s2++;
			}else{
				if(fl[i]==1&&deg[i]==tmp)
					s2++;
			}
		}
		cout<<s1<<" "<<s2<<'\n';
	}
	return 0;
}

这程序好像有点Bug,我给组数据试试?

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 8292kb

input:

3
3 2
1 2
2 3
6 6
1 2
2 3
1 3
1 4
2 5
3 6
4 1
1 2

output:

2 1
1 4
1 2

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 816ms
memory: 237564kb

input:

2231
1 0
5 7
4 1
3 4
3 1
3 5
4 2
3 2
4 5
5 4
2 1
2 5
2 4
2 3
5 10
3 2
2 5
1 4
4 2
4 5
1 2
1 3
3 5
3 4
1 5
5 10
1 3
2 4
1 4
5 2
2 3
1 5
5 4
1 2
3 4
5 3
5 9
2 5
3 5
2 3
2 1
4 3
3 1
4 1
4 5
2 4
5 4
4 2
4 1
4 5
4 3
5 9
4 1
4 5
3 4
2 4
2 1
3 1
2 5
3 5
3 2
5 4
2 5
2 3
2 1
2 4
5 9
5 2
1 3
4 3
1 2
5 4
4 2
5...

output:

1 1
3 1
4 1
1 5
1 5
2 1
4 1
2 1
4 1
2 1
2 1
3 1
4 1
4 1
1 5
2 1
4 1
1 5
1 5
1 5
3 1
4 1
4 1
4 1
3 1
3 1
4 1
4 1
2 1
4 1
4 1
1 5
1 5
2 1
4 1
4 1
4 1
3 1
2 1
4 1
2 1
4 1
4 1
4 1
3 1
1 5
4 1
4 1
1 5
2 1
4 1
2 1
2 1
1 5
4 1
1 5
3 1
4 1
1 5
2 1
1 5
3 1
3 1
1 5
3 1
3 1
2 1
1 5
4 1
3 1
1 5
2 1
3 1
2 1
2 1
...

result:

ok 2231 lines

Extra Test:

score: 0
Extra Test Passed