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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
#339549#1844. CactusAFewSunsWA 2ms23904kbC++143.3kb2024-02-27 15:41:492024-02-27 15:41:49

Judging History

你现在查看的是最新测评结果

  • [2024-02-27 15:41:49]
  • 评测
  • 测评结果:WA
  • 用时:2ms
  • 内存:23904kb
  • [2024-02-27 15:41:49]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
namespace my_std{
	#define ll long long
	#define bl bool
	ll my_pow(ll a,ll b,ll mod){
		ll res=1;
		if(!b) return 1;
		while(b){
			if(b&1) res=(res*a)%mod;
			a=(a*a)%mod;
			b>>=1;
		}
		return res;
	}
	ll qpow(ll a,ll b){
		ll res=1;
		if(!b) return 1;
		while(b){
			if(b&1) res*=a;
			a*=a;
			b>>=1;
		}
		return res;
	}
	#define db double
	#define pf printf
	#define pc putchar
	#define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
	#define pfr(i,x,y) for(register ll i=(x);i>=(y);i--)
	#define go(u) for(ll i=head[u];i;i=e[i].nxt)
	#define enter pc('\n')
	#define space pc(' ')
	#define fir first
	#define sec second
	#define MP make_pair
	#define il inline
	#define inf 8e18
	#define random(x) rand()*rand()%(x)
	#define inv(a,mod) my_pow((a),(mod-2),(mod))
	il ll read(){
		ll sum=0,f=1;
		char ch=0;
		while(!isdigit(ch)){
			if(ch=='-') f=-1;
			ch=getchar();
		}
		while(isdigit(ch)){
			sum=sum*10+(ch^48);
			ch=getchar();
		}
		return sum*f;
	}
	il void write(ll x){
		if(x<0){
			x=-x;
			pc('-');
		}
		if(x>9) write(x/10);
		pc(x%10+'0');
	}
	il void writeln(ll x){
		write(x);
		enter;
	}
	il void writesp(ll x){
		write(x);
		space;
	}
}
using namespace my_std;
vector<pair<ll,ll> > ans;
vector<ll> vec[600060];
queue<ll> q;
ll n,m,head[300030],cnt=0,d[300030];
ll dfn[300030],low[300030],tot=0,st[300030],top=0,tott;
bl ck[600060];
struct node{
	ll nxt,to;
}e[1000010];
void add(ll u,ll v){
	e[++cnt].nxt=head[u];
	e[cnt].to=v;
	head[u]=cnt;
}
void tarjan(ll fa,ll u){
	dfn[u]=low[u]=++tot;
	st[++top]=u;
	go(u){
		ll v=e[i].to;
		if(!dfn[v]){
			tarjan(u,v);
			low[u]=min(low[u],low[v]);
			if(low[v]>=dfn[u]){
				tott++;
				while(st[top]!=v){
					vec[tott].push_back(st[top]);
					vec[st[top]].push_back(tott);
					top--;
				}
				vec[tott].push_back(v);
				vec[v].push_back(tott);
				top--;
				vec[tott].push_back(u);
				vec[u].push_back(tott);
			}
		}
		else if(v!=fa) low[u]=min(low[u],dfn[v]);
	}
}
void dfs(ll fa,ll u){
	ck[u]=1;
	fr(i,0,(ll)vec[u].size()-1){
		ll v=vec[u][i];
		if(v==fa) continue;
		dfs(u,v);
	}
	if(u<=n) return;
	ll son=0,fir=0,lst=0;
	fr(i,0,(ll)vec[u].size()-1){
		ll v=vec[u][i];
		if(v==fa) continue;
		son++;
		if(son&1) ans.push_back(MP(1,v));
		else ans.push_back(MP(1,v+n));
		if(!fir) fir=v;
		lst=v;
	}
	ans.push_back(MP(1,fir+n));
	if(son&1) ans.push_back(MP(1,lst+n));
	else ans.push_back(MP(1,lst));
}
int main(){
	n=read();
	m=read();
	fr(i,1,m){
		ll u=read(),v=read();
		vec[u].push_back(v);
		vec[v].push_back(u);
		d[u]++;
		d[v]++;
	}
	fr(i,1,n) if(d[i]&1) q.push(i);
	while(!q.empty()){
		ll u=q.front();
		q.pop();
		if(ck[u]||d[u]%2==0) continue;
		ck[u]=1;
		ans.push_back(MP(1,u));
		fr(i,0,(ll)vec[u].size()-1){
			ll v=vec[u][i];
			d[v]--;
			if(!ck[v]&&(d[v]&1)) q.push(v);
		}
	}
	fr(i,1,n){
		if(ck[i]) continue;
		fr(j,0,(ll)vec[i].size()-1) if(!ck[vec[i][j]]) add(i,vec[i][j]);
	}
	fr(i,1,n) vec[i].clear();
	tott=n;
	fr(i,1,n) if(!dfn[i]) tarjan(0,i);
	ans.push_back(MP(2,0));
	fr(i,1,n){
		if(!ck[i]){
			dfs(0,i);
			ans.push_back(MP(1,i));
		}
	}
	pf("0 %lld\n",(ll)ans.size());
	fr(i,0,(ll)ans.size()-1){
		if(ans[i].fir==2) writeln(2);
		else pf("1 %lld\n",ans[i].sec);
	}
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 23904kb

input:

3 3
1 2
1 3
2 3

output:

0 6
2
1 2
1 6
1 5
1 3
1 1

result:

ok You are right!

Test #2:

score: -100
Wrong Answer
time: 2ms
memory: 23772kb

input:

7 7
1 2
1 3
2 3
2 4
2 5
3 6
3 7

output:

0 10
1 4
1 5
1 6
1 7
2
1 2
1 10
1 9
1 3
1 1

result:

wrong answer The number of remaining edges is not equal to m'.