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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 |
---|---|---|---|---|---|---|---|---|---|
#75282 | #4996. Icy Itinerary | xxzx | WA | 8ms | 20584kb | C++14 | 797b | 2023-02-04 19:12:17 | 2023-02-04 19:12:23 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=3e5+10;
int n,m,pre[N],nxt[N],p=2,ans[N];
map<int,int> mp[N];
int main() {
scanf("%d%d",&n,&m);
for(int i=1,u,v;i<=m;i++) {
scanf("%d%d",&u,&v);
mp[u][v]=mp[v][u]=1;
}
if(mp[1][2]) nxt[1]=2, pre[2]=1;
else nxt[2]=1, pre[1]=2;
for(int i=3;i<=n;i++) {
if(mp[i][p]) {
pre[nxt[p]]=i, nxt[i]=nxt[p], pre[i]=p, nxt[p]=i;
if(mp[i][nxt[i]]) p=nxt[i];
else p=i;
}
else {
nxt[pre[p]]=i, pre[i]=pre[p], nxt[i]=p, pre[p]=i;
if(mp[i][pre[i]]) p=i;
else p=(pre[i]?pre[i]:i);
}
}
int st=1;
while(pre[st]) st=pre[st];
for(int i=1;i<=n;i++) ans[i]=st, st=nxt[st];
if(ans[1]==1) for(int i=1;i<=n;i++) printf("%d ",ans[i]);
else for(int i=n;i>=1;i--) printf("%d ",ans[i]);
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 8ms
memory: 19848kb
input:
4 4 1 2 1 3 1 4 3 4
output:
1 3 4 2
result:
ok qwq
Test #2:
score: 0
Accepted
time: 3ms
memory: 20232kb
input:
5 0
output:
1 2 3 4 5
result:
ok qwq
Test #3:
score: 0
Accepted
time: 4ms
memory: 20012kb
input:
10 10 7 8 7 5 5 2 6 1 10 7 4 6 5 8 3 2 10 5 1 10
output:
1 3 4 5 6 2 8 9 10 7
result:
ok qwq
Test #4:
score: 0
Accepted
time: 7ms
memory: 20104kb
input:
2 1 1 2
output:
1 2
result:
ok qwq
Test #5:
score: 0
Accepted
time: 3ms
memory: 19752kb
input:
2 0
output:
1 2
result:
ok qwq
Test #6:
score: 0
Accepted
time: 0ms
memory: 19096kb
input:
3 1 1 3
output:
1 2 3
result:
ok qwq
Test #7:
score: 0
Accepted
time: 1ms
memory: 20584kb
input:
10 40 10 9 4 5 2 7 3 4 4 7 4 9 7 3 5 10 5 9 8 1 1 10 6 7 6 9 9 8 10 7 7 8 8 3 10 3 2 1 1 5 6 1 5 7 2 5 3 9 2 8 1 9 4 1 1 7 4 10 2 10 3 1 4 6 9 7 3 6 2 3 8 4 6 8 3 5 4 2 2 6
output:
1 2 3 4 6 7 8 9 5 10
result:
ok qwq
Test #8:
score: 0
Accepted
time: 0ms
memory: 19804kb
input:
10 45 7 2 6 3 7 10 5 1 1 9 6 8 10 1 2 10 10 8 10 5 6 2 4 3 6 7 10 3 3 2 1 8 10 9 2 5 9 2 4 1 8 3 8 2 5 7 4 8 9 4 1 7 7 3 6 10 4 2 6 4 10 4 3 1 8 5 4 7 1 6 9 5 3 9 6 5 5 4 9 7 2 1 8 9 3 5 6 9 7 8
output:
1 2 3 4 5 6 7 8 9 10
result:
ok qwq
Test #9:
score: -100
Wrong Answer
time: 1ms
memory: 19844kb
input:
15 40 12 11 11 6 5 11 15 14 10 14 15 5 1 11 10 12 4 3 6 4 4 9 2 11 6 12 13 7 7 9 10 9 1 2 9 11 2 6 7 14 2 9 3 13 9 1 2 7 8 11 1 10 13 1 4 15 3 7 2 15 6 5 10 15 4 14 15 6 2 4 3 11 1 14 2 8 1 8 10 7
output:
2 3 1 4 7 6 8 5 10 13 12 14 11 15 9
result:
wrong answer The first number wasn't 1