QOJ.ac

QOJ

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
#406301#8593. Coinxiaolang0 4ms58896kbC++14879b2024-05-07 09:22:472024-05-07 09:22:47

Judging History

你现在查看的是最新测评结果

  • [2024-05-07 09:22:47]
  • 评测
  • 测评结果:0
  • 用时:4ms
  • 内存:58896kb
  • [2024-05-07 09:22:47]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int N=2e6+5;
vector<int>ed[N]; 
int in[N],tin[N];
int t1[N],t2[N],len1,len2;
int q[N];
int n,m;
void toposort(bool typ){
	int len=0;
	for(int i=1;i<=n;i++){
		int u=((!typ)?i:n+1-i);
		if(!tin[u])q[++len]=u;
	}
	while(len>0){
		int u=q[len--];
		if(!typ)t1[++len1]=u;
		else t2[++len2]=u;
		int len=ed[u].size();
		for(int i=0;i<len;i++){
			int v=ed[u][((!typ)?i:len-1-i)];
			tin[v]--;
			if(!tin[v])q[++len]=v;
		}
	}
}
int ans[N];
int main(){
	scanf("%d%d",&n,&m);
	for(int i=1;i<=m;i++){
		int u,v;
		scanf("%d%d",&u,&v);
		ed[u].push_back(v); 
		in[v]++;
	}
	for(int i=1;i<=n;i++)tin[i]=in[i];
	toposort(0);
	for(int i=1;i<=n;i++)tin[i]=in[i];
	toposort(1);
	for(int i=1;i<=n;i++)if(t1[i]==t2[i])ans[t1[i]]=2;
	for(int i=1;i<=n;i++)cout<<ans[i]-1<<" ";
	cout<<"\n";
	return 0;
} 

详细

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 4ms
memory: 58896kb

input:

4 4
2 4
3 1
4 1
2 3

output:

-1 1 -1 -1 

result:

wrong answer wa

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Skipped

Dependency #1:

0%

Subtask #4:

score: 0
Skipped

Dependency #1:

0%