QOJ.ac
QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#227354 | #2766. Unique Cities | Camillus | 0 | 212ms | 36908kb | C++20 | 5.6kb | 2023-10-27 13:02:10 | 2023-10-27 13:02:10 |
Judging History
answer
#include <bits/stdc++.h>
using ll = long long;
using namespace std;
vector<int> g[200500];
int c[200500];
namespace simple_st {
struct Info {
int max = -1e7;
int cnt_max = 0;
int second_max = -1e7;
Info() = default;
Info(int d) {
max = d;
cnt_max = 1;
}
};
Info operator+(const Info &A, const Info &B) {
Info C;
if (A.max > B.max) {
C.max = A.max;
C.cnt_max = A.cnt_max;
C.second_max = max(A.second_max, B.max);
} else if (B.max > A.max) {
C.max = B.max;
C.cnt_max = B.cnt_max;
C.second_max = max(B.second_max, A.max);
} else {
C.max = A.max;
C.cnt_max = A.cnt_max + B.cnt_max;
C.second_max = A.max;
}
return C;
}
static constexpr int size = 1 << 18;
Info info[size * 2 - 1];
int tag[size * 2 - 1];
void apply(int x, int v) {
info[x].max += v;
info[x].second_max += v;
tag[x] += v;
}
void push(int x) {
if (tag[x]) {
apply(x * 2 + 1, tag[x]);
apply(x * 2 + 2, tag[x]);
tag[x] = 0;
}
}
void set(int i, int v, int x = 0, int lx = 0, int rx = size) {
if (rx - lx == 1) {
info[x] = Info(v);
return;
}
push(x);
if (i < (lx + rx) / 2) {
set(i, v, x * 2 + 1, lx, (lx + rx) / 2);
} else {
set(i, v, x * 2 + 2, (lx + rx) / 2, rx);
}
info[x] = info[x * 2 + 1] + info[x * 2 + 2];
}
void add(int l, int r, int v, int x = 0, int lx = 0, int rx = size) {
if (l <= lx && rx <= r) {
apply(x, v);
return;
}
if (l >= rx || lx >= r) {
return;
}
push(x);
add(l, r, v, x * 2 + 1, lx, (lx + rx) / 2);
add(l, r, v, x * 2 + 2, (lx + rx) / 2, rx);
info[x] = info[x * 2 + 1] + info[x * 2 + 2];
}
int find_max(int x = 0, int lx = 0, int rx = size) {
if (rx - lx == 1) {
return lx;
}
push(x);
if (info[x * 2 + 1].max == info[x].max) {
return find_max(x * 2 + 1, lx, (lx + rx) / 2);
} else {
return find_max(x * 2 + 2, (lx + rx) / 2, rx);
}
}
} // namespace simple_st
vector<int> et;
int et_num[200500];
int tail[200500];
void set_dist(int u, int p = -1, int d = 0) {
et_num[u] = et.size();
et.push_back(u);
if (g[u].size() == 1) {
simple_st::set(et_num[u], d);
}
for (int v : g[u]) {
if (v != p) {
set_dist(v, u, d + 1);
}
}
tail[u] = et.size();
}
multiset<int> taill[200500];
int ans[200500];
bool contains(int l, int r, int x) {
for (int i = l; i <= r; i++) {
if (c[et[i]] == x) {
return true;
}
}
return false;
}
int count(int l, int r) {
multiset<int> Q;
for (int i = l; i <= r; i++) {
Q.insert(c[et[i]]);
}
return Q.size();
}
void dfs(int u, int p = -1) {
if (simple_st::info[0].cnt_max == 1) {
int k = et[simple_st::find_max()];
int diff = (simple_st::info[0].max - simple_st::info[0].second_max);
int x = count(et_num[k] - diff + 1, et_num[k]);
if (g[u].size() == 1) {
for (int v : taill[u]) {
if (!contains(et_num[k] - diff + 1, et_num[k], v)) {
x += 1;
}
}
}
ans[u] = x;
} else if (g[u].size() == 1) {
ans[u] = taill[u].size();
}
for (int v : g[u]) {
if (v != p) {
simple_st::add(0, et.size(), 1);
simple_st::add(et_num[v], tail[v], -2);
dfs(v, u);
simple_st::add(0, et.size(), -1);
simple_st::add(et_num[v], tail[v], 2);
}
}
}
signed main() {
#ifdef LOCAL
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#else
ios::sync_with_stdio(false);
cin.tie(nullptr);
#endif
int n, m;
cin >> n >> m;
if (n == 2) {
cout << "1 1\n";
return 0;
}
for (int i = 0; i < n - 1; i++) {
int u, v;
cin >> u >> v;
g[u].push_back(v);
g[v].push_back(u);
}
for (int u = 1; u <= n; u++) {
cin >> c[u];
}
int root = 1;
for (int u = 1; u <= n; u++) {
if (g[u].size() > 1) {
root = u;
}
if (g[u].size() == 1) {
int last = -1;
int v = u;
while (true) {
if (g[v].size() > 2) {
break;
}
int cnt = 0;
for (int k : g[v]) {
if (k != last) {
cnt += 1;
}
}
if (cnt == 1) {
for (int k : g[v]) {
if (k != last) {
last = v;
v = k;
break;
}
}
} else {
break;
}
taill[u].insert(c[v]);
}
}
}
set_dist(root);
dfs(root);
for (int u = 1; u <= n; u++) {
cout << ans[u] << "\n";
}
return 0;
}
详细
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 22172kb
input:
2 1 1 2 1 1
output:
1 1
result:
wrong answer 1st lines differ - expected: '1', found: '1 1'
Subtask #2:
score: 0
Wrong Answer
Test #33:
score: 0
Wrong Answer
time: 167ms
memory: 33056kb
input:
115391 1 32067 50006 1710 5850 21016 66364 72998 34367 24783 10670 49950 93666 81835 81234 53480 68963 87357 43320 93905 30509 72528 92224 520 100511 54804 2917 58490 23858 93643 87530 90737 65205 60740 110812 9553 90266 70028 67222 108045 88982 35584 110286 53518 21733 108735 26404 108228 109796 92...
output:
1 1 0 1 0 1 1 0 1 1 1 1 1 1 1 1 1 0 1 0 1 0 1 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 0 1 1 2 1 1 1 0 1 1 1 0 1 1 1 0 1 0 0 1 1 0 1 0 0 1 0 2 1 1 1 1 1 1 1 1 0 0 1 1 0 1 2 1 1 0 1 1 0 0 2 0 2 1 2 1 1 1 4 1 0 1 0 0 0 0 1 1 1 1 1 0 1 1 1 1 0 1 1 0 1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...
result:
wrong answer 29th lines differ - expected: '1', found: '3'
Subtask #3:
score: 0
Wrong Answer
Test #50:
score: 0
Wrong Answer
time: 212ms
memory: 36908kb
input:
157976 157976 20171 157173 44732 54119 107845 121149 109200 110309 82678 108206 89140 64200 36916 128759 3966 123760 92978 105716 43700 146126 14924 3429 107721 36095 94906 78173 97162 29552 119574 39605 25145 138492 16622 99431 60281 7949 76176 136644 75716 91518 127987 110605 77999 110960 101187 5...
output:
0 0 2 2 3 1 2 1 0 0 1 0 4 0 2 0 6 1 0 0 0 4 1 0 0 0 0 2 0 1 1 0 0 0 0 0 2 0 1 1 0 3 1 1 0 0 0 2 3 0 0 0 0 1 0 4 2 1 1 0 0 2 1 1 0 1 0 1 0 0 0 0 0 1 1 0 0 5 1 0 0 4 1 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 1 0 1 0 4 0 4 1 0 1 2 0 0 0 0 1 0 0 1 0 0 1 7 0 1 0 1 0 0 4 1 0 1 0 1 0 4 0 0 0 0 0 10 0 0 0 2 1 1 7...
result:
wrong answer 1st lines differ - expected: '1', found: '0'
Subtask #4:
score: 0
Skipped
Dependency #1:
0%