#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = (1 << 20) + 12, MOD = (int)1e9 + 7;
int n, m, a[N], vis[N], timer, p[N];
vector<int> g[N], gt[N];
bool is[N];
int f(int d) {
timer++;
vis[d] = timer;
int lst = d;
queue<int> q;
q.push(d);
while(!q.empty()) {
int v = q.front();
lst = v;
q.pop();
for(int to : g[v]) {
if(vis[to] != timer) {
q.push(to);
vis[to] = timer;
}
}
}
return lst;
}
int dist[N], col[N], dep[N], mxd[N], res[N];
void dfs(int v, int pr = -1) {
mxd[v] = dep[v];
for(int to:g[v]) if(to != pr) {
gt[v].push_back(to);
dep[to] = dep[v] + 1;
dfs(to, v);
mxd[v] = max(mxd[v], mxd[to]);
}
}
vector<int> st;
set<int> cur[N];
void go(int v) {
set<int> raz;
for(int i = 0; i < (int)st.size() && mxd[v] - dep[v] < dep[v] - dep[st[i]]; i++) {
raz.insert(a[st[i]]);
cur[v].insert(a[st[i]]);
}
res[v] += (int)raz.size();
if(gt[v].empty()) return;
int sz = (int)gt[v].size();
vector<int> p(sz), s(sz);
p[0] = mxd[gt[v][0]];
s[sz - 1] = mxd[gt[v][sz - 1]];
for(int i = 1; i < sz; i++) {
p[i] = max(p[i - 1], mxd[gt[v][i]]);
}
for(int i = sz - 1; i >= 0; i--) {
s[i] = max(s[i + 1], mxd[gt[v][i]]);
}
for(int i = 0; i < sz; i++) {
int to = gt[v][i];
int mx = dep[v];
if(i) mx = max(mx, p[i - 1]);
if(i < sz - 1) mx = max(mx, s[i + 1]);
mx -= dep[v];
vector<int> bf = st;
while(!st.empty() && dep[v] - dep[st.back()] <= mx) {
st.pop_back();
}
st.push_back(v);
go(to);
st = bf;
}
}
void solve(int root) {
for(int i = 1; i <= n; i++) {
gt[i].clear();
}
st.clear();
dep[root] = 1;
dfs(root);
go(root);
}
void test() {
cin >> n >> m;
for(int i = 1; i <= n - 1; i++) {
int a, b;
cin >> a >> b;
g[a].push_back(b);
g[b].push_back(a);
}
for(int i = 1; i <= n; i++) {
cin >> a[i];
if((int)g[i].size() == 1) {
is[i] = 1;
}
}
int d = f(1), d1 = f(d);
solve(d);solve(d1);
// solve(d1);
for(int i = 1; i <= n; i++) {
// if(is[i] && i != d && i != d1) res[i]--;
// cout << res[i] << '\n';
cout << (int)cur[i].size() << '\n';
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int t = 1;
// cin >> t;
while(t--)
test();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
27 ms |
101200 KB |
Output is correct |
2 |
Incorrect |
30 ms |
101456 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
136 ms |
113480 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
215 ms |
120628 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
27 ms |
101200 KB |
Output is correct |
2 |
Incorrect |
30 ms |
101456 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |