/*
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|
|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|
|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|
|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|
|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|-\/\/-|
|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|
|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|/-/\-\|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|\-\/-/|
|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|
|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|-/\/\-|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
*/
#include <bits/stdc++.h>
#define fore(i, a, b) for (signed i = (a), i##_last = (b); i < i##_last; ++i)
#define fort(i, a, b) for (signed i = (a), i##_last = (b); i <= i##_last; ++i)
#define ford(i, a, b) for (signed i = (a), i##_last = (b); i >= i##_last; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define subtree(x) num[x], num[x] + d[x] - 1
using namespace std;
using ll = long long;
using ld = long double;
template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};
typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<ll> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
class BinaryTrie {
private:
int length, depth;
vector<array<int, 2> > trie;
public:
BinaryTrie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
void append(const int mask) {
int x = 0, y;
ford(i, depth, 0) {
y = ((mask >> i) & 1);
if (trie[x][y] < 0) {
trie[x][y] = ++length;
trie.push_back({-1, -1});
}
x = trie[x][y];
}
}
int query(const int mask) const {
int res = 0, x = 0, y;
ford(i, depth, 0) {
y = ((mask >> i) & 1) ^ 1;
if (trie[x][y] < 0) {
if (y ^ 1)
res |= 1 << i;
x = trie[x][y ^ 1];
} else {
if (y)
res |= 1 << i;
x = trie[x][y];
}
}
return res;
}
};
class Trie {
private:
int length, depth;
vector<array<int, 2> > trie;
public:
Trie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
void append(const int mask) {
int x = 0, y;
ford(i, depth, 0) {
y = ((mask >> i) & 1);
if (trie[x][y] < 0) {
trie[x][y] = ++length;
trie.push_back({-1, -1});
}
x = trie[x][y];
}
}
int query(const int mask) const {
int res = 0, x = 0, y;
ford(i, depth, 0) {
y = ((mask >> i) & 1) ^ 1;
if (trie[x][y] < 0) {
x = trie[x][y ^ 1];
} else {
res |= 1 << i;
x = trie[x][y];
}
}
return res;
}
};
class SegmentTree {
private:
int n;
vector<Trie> it;
void update(const int q, const int mask, const int i, const int l, const int r) {
if (q < l || r < q)
return;
it[i].append(mask);
if (l == r)
return;
const int m = l + r >> 1;
update(q, mask, i << 1, l, m);
update(q, mask, i << 1 | 1, m + 1, r);
}
int query(const int ql, const int qr, const int mask, const int i, const int l, const int r) const {
if (qr < l || r < ql)
return 0;
if (ql <= l && r <= qr)
return it[i].query(mask);
const int m = l + r >> 1;
return max(query(ql, qr, mask, i << 1, l, m), query(ql, qr, mask, i << 1 | 1, m + 1, r));
};
public:
SegmentTree(): n(0) {};
SegmentTree(const int n): n(n), it(n + 5 << 2, Trie(30)) {};
void update(const int q, const int mask) {
update(q, mask, 1, 1, n);
}
void resize(int newSize) {
n = newSize;
newSize = n + 5 << 2;
it.resize(newSize, Trie(30));
}
int query(const int ql, const int qr, const int mask) const {
return query(ql, qr, mask, 1, 1, n);
}
};
int q;
void subtask2() {
vi h(2);
vii p(2);
string t;
vvii adj(2);
int x, y, a, b, n = 1, res, g;
const function<int(int, int)> findDistance = [&](int x, int y) -> int {
int res = 0;
for (; h[x] > h[y]; x = p[x].se)
res ^= p[x].fi;
for (; h[y] > h[x]; y = p[y].se)
res ^= p[y].fi;
while (x != y) {
res ^= p[x].fi ^ p[y].fi;
x = p[x].se;
y = p[y].se;
}
return res;
};
const function<void(int, int)> dfs = [&res, &adj, &g, &dfs](const int u, const int d) {
maxi(res, g ^ d);
for (const auto &[w, v] : adj[u])
dfs(v, d ^ w);
};
fort(_, 1, q) {
cin >> t;
if (t == "Add") {
cin >> x >> y;
adj.pb(vii());
adj[x].emplace_back(y, ++n);
h.pb(h[x] + 1);
p.emplace_back(y, x);
} else {
cin >> a >> b;
res = g = findDistance(a, b);
dfs(b, 0);
cout << res << '\n';
}
}
}
void subtask3() {
vi h(2);
string t;
int x, y, a, b;
BinaryTrie trie(30);
trie.append(0);
fort(_, 1, q) {
cin >> t;
if (t == "Add") {
cin >> x >> y;
h.pb(h[x] ^ y);
trie.append(h.back());
} else {
cin >> a >> b;
cout << (h[a] ^ trie.query(h[a])) << '\n';
}
}
}
void subtask4() {
vvii adj(2);
SegmentTree it;
vi h(2), num, d;
int n = 1, t = 0;
vector<tuple<string, int, int> > queries(q);
const function<void(int)> dfs = [&adj, &t, &num, &d, &dfs](const int u) {
num[u] = ++t;
++d[u];
for (const auto &[w, v] : adj[u]) {
dfs(v);
d[u] += d[v];
}
};
//-----------------------------------Create graph------------------------------------------
for (auto &[z, x, y] : queries) {
cin >> z >> x >> y;
if (z == "Add") {
adj.pb(vii());
adj[x].emplace_back(y, ++n);
h.pb(h[x] ^ y);
}
}
//-----------------------------------Numbering----------------------------------------------
num.resize(n + 1);
d.resize(n + 1);
it.resize(n);
dfs(1);
it.update(num[1], 0);
//-----------------------------------Calculate answers---------------------------------------
t = 1;
for (const auto &[z, x, y] : queries) {
if (z == "Add") {
++t;
it.update(num[t], h[t]);
continue;
}
cout << it.query(subtree(y), h[x]) << '\n';
}
}
int main() {
#ifdef LOCAL
freopen("input.INP", "r", stdin);
#endif // LOCAL
cin.tie(0) -> sync_with_stdio(0);
cout.tie(0);
cin >> q;
subtask4();
return 0;
}
Compilation message
klasika.cpp: In constructor 'BinaryTrie::BinaryTrie(int)':
klasika.cpp:48:28: warning: 'BinaryTrie::trie' will be initialized after [-Wreorder]
48 | vector<array<int, 2> > trie;
| ^~~~
klasika.cpp:47:9: warning: 'int BinaryTrie::length' [-Wreorder]
47 | int length, depth;
| ^~~~~~
klasika.cpp:50:5: warning: when initialized here [-Wreorder]
50 | BinaryTrie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
| ^~~~~~~~~~
klasika.cpp: In constructor 'Trie::Trie(int)':
klasika.cpp:83:28: warning: 'Trie::trie' will be initialized after [-Wreorder]
83 | vector<array<int, 2> > trie;
| ^~~~
klasika.cpp:82:9: warning: 'int Trie::length' [-Wreorder]
82 | int length, depth;
| ^~~~~~
klasika.cpp:85:5: warning: when initialized here [-Wreorder]
85 | Trie(const int depth): trie(1, {-1, -1}), length(0), depth(depth) {};
| ^~~~
klasika.cpp: In member function 'void SegmentTree::update(int, int, int, int, int)':
klasika.cpp:123:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
123 | const int m = l + r >> 1;
| ~~^~~
klasika.cpp: In member function 'int SegmentTree::query(int, int, int, int, int, int) const':
klasika.cpp:133:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
133 | const int m = l + r >> 1;
| ~~^~~
klasika.cpp: In constructor 'SegmentTree::SegmentTree(int)':
klasika.cpp:139:42: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
139 | SegmentTree(const int n): n(n), it(n + 5 << 2, Trie(30)) {};
| ~~^~~
klasika.cpp: In member function 'void SegmentTree::resize(int)':
klasika.cpp:147:21: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
147 | newSize = n + 5 << 2;
| ~~^~~
klasika.cpp: In lambda function:
klasika.cpp:179:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
179 | for (const auto &[w, v] : adj[u])
| ^
klasika.cpp: In lambda function:
klasika.cpp:227:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
227 | for (const auto &[w, v] : adj[u]) {
| ^
klasika.cpp: In function 'void subtask4()':
klasika.cpp:233:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
233 | for (auto &[z, x, y] : queries) {
| ^
klasika.cpp:249:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
249 | for (const auto &[z, x, y] : queries) {
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
468 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
468 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
387 ms |
171860 KB |
Output is correct |
| 2 |
Correct |
683 ms |
345032 KB |
Output is correct |
| 3 |
Correct |
1044 ms |
515056 KB |
Output is correct |
| 4 |
Runtime error |
990 ms |
524288 KB |
Execution killed with signal 9 |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
468 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
