/*
Code written by Talant I.D.
*/
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//using namespace __gnu_pbds;
using namespace std;
//typedef tree <int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) int((v).size())
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define OK cout << "OK" << endl;
inline bool isvowel(char ch){
ch = tolower(ch);
return (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u');
}
inline bool isprime(int n){
if(n < 2 || (n%2 == 0 && n != 2)) return false;
for(int i = 3; i*i <= n; i++)
if(n%i == 0) return false;
return true;
}
class Union{
private:
vector <int> saizu, link;
public:
Union(int n){
saizu.assign(n, 1); link.resize(n);
iota(all(link), 0);
}
int find(int n){
if(link[n] == n) return n;
return link[n] = find(link[n]);
}
int same(int a, int b){
return find(a) == find(b);
}
void unite(int a, int b){
if(same(a, b)) return;
a = find(a); b = find(b);
if(saizu[a] < saizu[b]) swap(a, b);
saizu[a] += saizu[b];
link[b] = a;
}
int getsize(int a){
return saizu[find(a)];
}
};
const int mod = 1e9+7;
ll mode(ll a){
a %= mod;
if(a < 0) a += mod;
return a;
}
ll subt(ll a, ll b){
return mode(mode(a)-mode(b));
}
ll add(ll a, ll b){
return mode(mode(a)+mode(b));
}
ll mult(ll a, ll b){
return mode(mode(a)*mode(b));
}
ll binpow(ll a, ll b){
ll res = 1;
while(b){
if(b&1) res = mult(res, a);
a = mult(a, a);
b >>= 1;
}
return res;
}
const int N = 2e5+7;
vector <vector <int>> graph(N);
set <pii> st, t;
int tree[N*4], vec[N], tin[N], tout[N], timer, up[N][20];
inline void dfs(int v, int p = 1){
tin[v] = ++timer;
up[v][0] = p;
for(int i = 1; i < 20; i++) up[v][i] = up[up[v][i-1]][i-1];
for(auto to : graph[v]){
if(to != p){
dfs(to, v);
}
}
tout[v] = ++timer;
}
inline bool upper(int a, int b){
return tin[a] <= tin[b] && tout[a] >= tout[b];
}
inline int lca(int a, int b){
if(upper(a, b)) return a;
if(upper(b, a)) return b;
for(int i = 19; i >= 0; i--){
if(!upper(up[a][i], b)) a = up[a][i];
}
return up[a][0];
}
int main(){
do_not_disturb
int n, m, q;
scanf("%d%d%d", &n, &m, &q);
for(int i = 0; i < n-1; i++){
int x, y;
scanf("%d%d", &x, &y);
graph[x].pb(y);
graph[y].pb(x);
}
dfs(1);
for(int i = 1; i <= m; i++){
scanf("%d", &vec[i]);
}
for(int i = 1; i <= m; i++){
t.insert(mp(vec[i], i));
if(i < m) st.insert(mp(lca(vec[i], vec[i+1]), i+1));
}
while(q--){
int type;
scanf("%d", &type);
if(type == 1){
int pos, x;
scanf("%d%d", &pos, &x);
t.erase(mp(vec[pos], pos));
if(pos > 1) st.erase(mp(lca(vec[pos], vec[pos-1]), pos));
if(pos < m) st.erase(mp(lca(vec[pos], vec[pos+1]), pos+1));
vec[pos] = x;
t.insert(mp(vec[pos], pos));
if(pos > 1) st.insert(mp(lca(vec[pos], vec[pos-1]), pos));
if(pos < m) st.insert(mp(lca(vec[pos], vec[pos+1]), pos+1));
}
else{
int l, r, x;
scanf("%d%d%d", &l, &r, &x);
auto to = t.lb(mp(x, l));
if(to != t.end() && to -> first == x && to -> second <= r){
cout << to->second << ' ' << to->second << endl;
}
else{
auto it = st.lb(mp(x, l));
if(it != st.end() && it -> first == x && it -> second <= r){
cout << it -> second-1 << ' ' << it->second << endl;
}
else{
cout << "-1 -1" << endl;
}
}
}
}
return 0;
}
Compilation message
treearray.cpp: In function 'int main()':
treearray.cpp:137:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
137 | scanf("%d%d%d", &n, &m, &q);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~
treearray.cpp:140:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
140 | scanf("%d%d", &x, &y);
| ~~~~~^~~~~~~~~~~~~~~~
treearray.cpp:148:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
148 | scanf("%d", &vec[i]);
| ~~~~~^~~~~~~~~~~~~~~
treearray.cpp:157:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
157 | scanf("%d", &type);
| ~~~~~^~~~~~~~~~~~~
treearray.cpp:160:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
160 | scanf("%d%d", &pos, &x);
| ~~~~~^~~~~~~~~~~~~~~~~~
treearray.cpp:171:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
171 | scanf("%d%d%d", &l, &r, &x);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
5100 KB |
n=5 |
| 2 |
Incorrect |
4 ms |
5100 KB |
Wrong output format. |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
5100 KB |
n=5 |
| 2 |
Incorrect |
4 ms |
5100 KB |
Wrong output format. |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
5100 KB |
n=5 |
| 2 |
Incorrect |
4 ms |
5100 KB |
Wrong output format. |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
5100 KB |
n=5 |
| 2 |
Incorrect |
4 ms |
5100 KB |
Wrong output format. |
| 3 |
Halted |
0 ms |
0 KB |
- |
