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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
#528876#4839. Smaller LCANanani_fan#WA 1978ms542228kbC++203.6kb2024-08-24 00:05:092024-08-24 00:05:11

Judging History

你现在查看的是最新测评结果

  • [2024-08-24 00:05:11]
  • 评测
  • 测评结果:WA
  • 用时:1978ms
  • 内存:542228kb
  • [2024-08-24 00:05:09]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
//注意Sum和cnt的区别
const int maxn = 3e5+10; // 数据范围
ll ans[maxn];
int n, cnt;
int sum[maxn*150], ls[maxn*150], rs[maxn*150];
// 用法:update(root, 1, n, x, f); 其中 x 为待修改节点的编号
void update(int& p, int L, int R, int x, int f) {  // 引用传参
    if (!p) p = ++cnt;  // 当结点为空时,创建一个新的结点
    if (L == R) {
        sum[p] += f;
        return;
    }
    int m = L + ((R - L) >> 1);
    if (x <= m)
        update(ls[p], L, m, x, f);
    else
        update(rs[p], m + 1, R, x, f);
    sum[p] = sum[ls[p]] + sum[rs[p]];  // pushup
}
// 用法:query(root, 1, n, l, r);
int query(int p, int L, int R, int l, int r) {
    if (!p) return 0;  // 如果结点为空,返回 0
    if (L >= l && R <= r) return sum[p];
    int m = L + ((R - L) >> 1), ans = 0;
    if (l <= m) ans += query(ls[p], L, m, l, r);
    if (r > m) ans += query(rs[p], m + 1, R, l, r);
    return ans;
}
int merge(int a, int b, int l, int r) {
    if (!a) return b;
    if (!b) return a;
    if (l == r) {
        sum[a]+=sum[b];
        return a;
    }
    int mid = (l + r) >> 1;
    ls[a] = merge(ls[a], ls[b], l, mid);
    rs[a] = merge(rs[a], rs[b], mid + 1, r);
    sum[a]=sum[ls[a]]+sum[rs[a]];
    return a;
}
vector<int> ve[maxn];
int L[maxn],R[maxn],dfn;
int Sum[maxn];
void add(int l,int r,int x){
    // cout<<"l="<<l<<" r="<<r<<" x="<<x<<endl;
    Sum[l]+=x;
    Sum[r+1]-=x;
}
int dep[maxn],f[21][maxn];
void dfs1(int x,int h)
{
    L[x]=++dfn;
    dep[x]=dep[h]+1;
	for(int i=0;i<=19;i++)
		f[i+1][x]=f[i][f[i][x]];
    for(auto it:ve[x])if(it!=h){
		f[0][it]=x;
        dfs1(it,x);
    }
    R[x]=dfn;
}
int lca(int x,int y)
{
	if(dep[x]<dep[y]) swap(x,y);
	for(int i=20;i>=0;i--)
	{
		if(dep[f[i][x]]>=dep[y]) x=f[i][x];
		if(x==y) return x;
	}
	for(int i=20;i>=0;i--)
		if(f[i][x]!=f[i][y])
			x=f[i][x],y=f[i][y];
	return f[0][x];
}
int getson(int x,int y){
    assert(L[y]>=L[x]&&R[y]<=R[x]);
    for(int i=20;i>=0;i--)if(dep[f[i][y]]>dep[x])y=f[i][y];
    return y;
}
vector<int> ad[maxn];
vector<pair<int,int>>era[maxn];
int dfs(int x,int h){
    int rt=0;
    for(auto it:ve[x])if(it!=h){
        int g=dfs(it,x);
        int t=query(g,1,n,x,n);
        add(L[x],R[x],t);
        add(L[it],R[it],-t);
        rt=merge(rt,g,1,n);
        // cout<<"x="<<x<<" h="<<h<<" it="<<it<<" t="<<t<<endl;
    } 
    for(auto [p,q]:era[x])if(x<=p*q){
        add(L[x],R[x],-1);
        if(q==x)swap(p,q);
        update(rt,1,n,p*q,-2);
        // cout<<"x="<<x<<" it="<<p*q<<" -2"<<endl;
        if(p==x)add(L[x],R[x],-1);
        if(p==x)add(1,n,1);
    }
    for(auto it:ad[x]){
        update(rt,1,n,it,1);
        // cout<<"x="<<x<<" it="<<it<<" 1"<<endl;
        add(L[x],R[x],1);
    }  
    return rt;
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    for(int i=1;i<n;i++){
        int x,y;cin>>x>>y;
        // int x=i+1,y=rand()%(i)+1;
        ve[x].push_back(y);
        ve[y].push_back(x);
    }
    ll all=0;
    dfs1(1,0);
    for(int i=1;i<=n;i++){
        all++;
        for(int j=i+1;j<=n;j++)if((ll)i*j<=n){
            ad[i].push_back(i*j);
            ad[j].push_back(i*j);
            int l=lca(i,j);
            era[l].emplace_back(i,j);
        }
        else {all+=n-j+1;break;}
    }
    dfs(1,0);
    for(int i=1;i<=n;i++)Sum[i]+=Sum[i-1];
    for(int i=1;i<=n;i++){
        cout<<all+Sum[L[i]]<<"\n";
        // cout<<all<<" "<<Sum[L[i]]<<endl;
    }
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 30376kb

input:

5
1 2
4 2
2 5
3 5

output:

15
15
15
15
14

result:

ok 5 number(s): "15 15 15 15 14"

Test #2:

score: -100
Wrong Answer
time: 1978ms
memory: 542228kb

input:

300000
40632 143306
32259 40632
225153 143306
269774 225153
289668 40632
191636 269774
85717 191636
58564 191636
156509 143306
289939 40632
247103 269774
40257 40632
98149 289668
142277 143306
291616 40257
46813 225153
56324 143306
277154 142277
53903 289668
114266 32259
152231 58564
241151 152231
4...

output:

44999961220
44999668941
44999714714
44999713733
44998758077
44999573333
44999166553
44998846712
44998731417
44998885955
44999695171
44998893503
44999028366
44998689221
44999467714
44999222200
44998876575
44999074226
44999085227
44998880439
44999611842
44999069900
44999215501
44998843558
44999037686
...

result:

wrong answer 1st numbers differ - expected: '44999437117', found: '44999961220'