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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#528873#4839. Smaller LCANanani_fan#WA 1985ms541252kbC++203.4kb2024-08-23 23:58:222024-08-23 23:58:23

Judging History

你现在查看的是最新测评结果

  • [2024-08-23 23:58:23]
  • 评测
  • 测评结果:WA
  • 用时:1985ms
  • 内存:541252kb
  • [2024-08-23 23:58:22]
  • 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);
    } 
    for(auto [p,q]:era[x])if(x<=p*q){
        add(1,n,1);add(L[x],R[x],-1);
        if(q==x)swap(p,q);
        update(rt,1,n,p*q,-2);
        if(p==x)add(L[x],R[x],-1);
    }
    for(auto it:ad[x]){
        update(rt,1,n,it,1);
        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;
}

Details

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Test #1:

score: 100
Accepted
time: 3ms
memory: 32416kb

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: 1985ms
memory: 541252kb

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:

45000862900
45000570621
45000616394
45000615413
44999659757
45000475013
45000068233
44999748392
44999633097
44999787635
45000596851
44999795183
44999930046
44999590901
45000369394
45000123880
44999778255
44999975906
44999986907
44999782119
45000513522
44999971580
45000117181
44999745238
44999939366
...

result:

wrong answer 1st numbers differ - expected: '44999437117', found: '45000862900'