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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
#85192#3100. Meetings 2lmeowdn0 8ms27204kbC++141.5kb2023-03-07 09:27:502023-03-07 09:28:08

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-03-07 09:28:08]
  • 评测
  • 测评结果:0
  • 用时:8ms
  • 内存:27204kb
  • [2023-03-07 09:27:50]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,a,b) for(int i=(a);i>=(b);i--)
#define fi first
#define se second
#define eb emplace_back
#define popc __builtin_popcount
#define sgn(x) ((x)&1?-1:1)
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pii> vp;
typedef unsigned long long ull;
typedef long double ld;

int read() {
    int x=0,w=1; char c=getchar(); 
    while(!isdigit(c)) {if(c=='-') w=-1; c=getchar();}
    while(isdigit(c)) {x=x*10+c-'0'; c=getchar();}
    return x*w;
}

const int N=1e6+9;
int n,a[N],d[N],g[N],sz[N],cnt,ans[N],ft[N],rt1,rt2;
vi e[N];

void dfs(int u,int fa) {
    d[u]=d[fa]+1, sz[u]=1, ft[u]=fa;
    for(int v:e[u]) if(v!=fa) dfs(v,u), sz[u]+=sz[v];
}

signed main() {
    n=read();
    rep(i,2,n) {
        int u=read(), v=read();
        e[u].eb(v), e[v].eb(u);
    }
    dfs(1,0);
    rep(i,1,n) if(d[i]>d[rt1]) rt1=i;
    d[rt1]=0; dfs(rt1,0);
    rep(i,1,n) if(d[i]>d[rt2]) rt2=i;
    int x=rt2;
    while(x) g[++cnt]=x, a[x]=sz[x], x=ft[x];
    per(i,cnt,1) a[g[i]]-=a[g[i-1]];
    int l=1,r=cnt,suml=a[g[1]],sumr=a[g[cnt]];
    rep(k,1,n) {
        if(k%2==1) ans[k]=1;
        else {
            while(suml<k/2) l++, suml+=a[g[l]];
            while(sumr<k/2) r--, sumr+=a[g[r]];
            ans[k]=r-l+1;
        }
    }
    rep(i,1,n) printf("%lld\n",ans[i]);
    return 0;
}

详细

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 4
Accepted
time: 8ms
memory: 26988kb

input:

1

output:

1

result:

ok single line: '1'

Test #2:

score: 0
Accepted
time: 4ms
memory: 27012kb

input:

2
2 1

output:

1
2

result:

ok 2 lines

Test #3:

score: 0
Accepted
time: 3ms
memory: 27028kb

input:

3
1 3
3 2

output:

1
3
1

result:

ok 3 lines

Test #4:

score: 0
Accepted
time: 5ms
memory: 27024kb

input:

14
12 14
12 9
14 2
12 6
12 7
6 4
3 4
1 4
12 8
13 1
10 12
11 6
6 5

output:

1
7
1
5
1
3
1
3
1
2
1
2
1
2

result:

ok 14 lines

Test #5:

score: 0
Accepted
time: 0ms
memory: 27204kb

input:

14
10 14
3 10
14 13
1 3
3 5
3 11
12 14
14 6
11 8
2 3
7 8
9 7
1 4

output:

1
8
1
6
1
5
1
4
1
2
1
1
1
1

result:

ok 14 lines

Test #6:

score: -4
Wrong Answer
time: 4ms
memory: 26988kb

input:

14
8 13
13 10
13 7
6 8
5 7
10 4
9 5
12 8
6 2
4 11
5 1
9 3
4 14

output:

1
8
1
6
1
4
1
4
1
2
1
1
1
1

result:

wrong answer 6th lines differ - expected: '5', found: '4'

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Skipped

Dependency #1:

0%