이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "beechtree.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
int n, m;
vector<int> p, c;
vector<int> adj[202020], res;
int sz[202020];
void getsz(int v) {
sz[v] = 1;
vector<pii> temp;
for (int i = 0; i < adj[v].size(); i++) {
int u = adj[v][i];
getsz(u);
sz[v] += sz[u];
temp.push_back({sz[u], i});
}
if (temp.size() == 0) return;
sort(temp.begin(), temp.end(), greater<pii>());
swap(adj[v][temp[0].second], adj[v][0]);
}
vector< pair<pii, int> > merge(vector< pair<pii, int> > lge, vector< pair<pii, int> > sml) {
int r = sml.begin()->second;
vector< pair<pii, int> > res;
priority_queue< pair<pii, int> > pq;
pq.push({{sz[r], 0}, r});
while (!pq.empty()) {
int now = pq.top().second;
int pos = upper_bound(lge.begin(), lge.end(), pq.top()) - lge.begin();
// lge[pos - 1] <= now < lge[pos]
res.push_back(pq.top());
pq.pop();
for (int j = 0; j < adj[now].size(); j++) {
int u = adj[now][j];
pq.push({{sz[u], -pos}, u});
}
}
for (int i = 0; i < res.size(); i++) lge.push_back(res[i]);
sort(lge.begin(), lge.end(), greater< pair<pii, int> >());
return lge;
}
vector< pair<pii, int> > solve(int v) {
vector< pair<pii, int> > vec;
vec.push_back({{sz[v], 0}, v});
for (int i = 0; i < adj[v].size(); i++) {
int u = adj[v][i];
if (i == 0) {
vec = solve(u);
vec.insert(vec.begin(), {{sz[v], 0}, v});
}
else vec = merge(vec, solve(u));
}
map<int, int> cnt;
for (int i = 1; i < sz[v]; i++) {
int now = vec[i].second, par;
if (cnt.find(c[now]) == cnt.end()) {
par = vec[0].second;
cnt.insert({c[now], 1});
}
else {
par = vec[cnt[c[now]]].second;
cnt[c[now]]++;
}
if (par != p[now]) {
res[v] = 0;
}
}
/*
cout << "v : " << v << "\n";
for (int i = 0; i < vec.size(); i++) cout << vec[i].second << " ";
cout << "\n";
*/
return vec;
}
vector<int> beechtree(int N, int M, vector<int> P, vector<int> C) {
n = N; m = M; p = P; c = C;
for (int i = 1; i < n; i++) {
adj[p[i]].push_back(i);
}
for (int i = 0; i < n; i++) res.push_back(1);
getsz(0);
solve(0);
return res;
}
컴파일 시 표준 에러 (stderr) 메시지
beechtree.cpp: In function 'void getsz(int)':
beechtree.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
16 | for (int i = 0; i < adj[v].size(); i++) {
| ~~^~~~~~~~~~~~~~~
beechtree.cpp: In function 'std::vector<std::pair<std::pair<int, int>, int> > merge(std::vector<std::pair<std::pair<int, int>, int> >, std::vector<std::pair<std::pair<int, int>, int> >)':
beechtree.cpp:40:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | for (int j = 0; j < adj[now].size(); j++) {
| ~~^~~~~~~~~~~~~~~~~
beechtree.cpp:45:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
45 | for (int i = 0; i < res.size(); i++) lge.push_back(res[i]);
| ~~^~~~~~~~~~~~
beechtree.cpp: In function 'std::vector<std::pair<std::pair<int, int>, int> > solve(int)':
beechtree.cpp:53:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
53 | for (int i = 0; i < adj[v].size(); i++) {
| ~~^~~~~~~~~~~~~~~
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |