#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update>
// #pragma GCC optimize("Ofast,unroll-loops,fast-math")
// #pragma GCC target("popcnt,sse3,avx")
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll,ll> pll;
#define sz size()
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define pb push_back
const int mod = ll(1e9)+7; //(b + (a%b)) % b (to mod -1%(10^9+7) correctly in c++ its -1 but its suppose to be 10^9+6
const ll MOD = 998244353; // (a%mod)*(binpow(b,mod-2,mod) = (a/b)%mod
const int N = ll(2e5)+100;
const int M = ll(2e5) + 100;
const long long inf = 2e18;
//const long double eps = 1e-15L;
ll lcm(ll a, ll b) { return (a / __gcd(a,b))*b; }
ll binpow(ll a, ll b, ll m) { ll res=1; a %= m; while(b>0){ if(b&1)res=(res * a) % m; a=(a * a) % m; b/=2; } return res%m;}
void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
int n, m, q, a[N], d[N], up[21][N];
vector<int> g[N];
set<int> pos[N], pos1[N];
void dfs(int v, int p = 0) {
d[v] = d[p] + 1;
up[0][v] = p;
for(int j = 1; j <= 20; j ++) up[j][v] = up[j - 1][up[j - 1][v]];
for(auto to : g[v]) {
if(to == p) continue;
dfs(to, v);
}
}
int lca(int a, int b) {
if(d[a] < d[b]) swap(a, b);
for(int j = 20; j >= 0; j --) {
if((d[a] - d[b]) & (1 << j)) {
a = up[j][a];
}
}
if(a == b) return a;
for(int j = 20; j >= 0; j --) {
if(up[j][a] != up[j][b]) {
a = up[j][a]; b = up[j][a];
}
}
return up[0][a];
}
void Baizho() {
cin>>n>>m>>q;
for(int i = 1; i <= n - 1; i ++) {
int a, b; cin>>a>>b;
g[a].pb(b);
g[b].pb(a);
}
dfs(1);
for(int i = 1; i <= m; i ++) {
cin>>a[i];
pos1[a[i]].insert(i);
if(i > 1) {
pos[lca(a[i], a[i - 1])].insert(i);
}
}
while(q --) {
int t; cin>>t;
if(t == 1) {
int p, v; cin>>p>>v;
if(p > 1) pos[lca(a[p], a[p - 1])].erase(p);
if(p < n) pos[lca(a[p], a[p + 1])].erase(p + 1);
pos1[a[p]].erase(p);
a[p] = v;
pos1[a[p]].insert(p);
if(p > 1) pos[lca(a[p], a[p - 1])].insert(p);
if(p < n) pos[lca(a[p], a[p + 1])].insert(p + 1);
} else {
int l, r, v; cin>>l>>r>>v;
if(!pos1[v].empty() && *pos1[v].begin() <= r) {
auto tr = -- pos1[v].lower_bound(r + 1);
if(*tr >= l) {
cout<<*tr<<" "<<*tr<<"\n";
continue;
}
}
l ++;
if(pos[v].empty() || *pos[v].begin() > r) {
cout<<"-1 -1\n";
return;
}
auto tr = -- pos[v].lower_bound(r + 1);
if(*tr >= l) cout<<*tr - 1<<" "<<*tr<<"\n";
else cout<<"-1 -1\n";
}
}
}
signed main() {
// Freopen("nondec");
ios_base::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
// precalc();
int ttt = 1;
// cin>>ttt;
for(int i=1; i<=ttt; i++) {Baizho(); }
}
Compilation message
treearray.cpp: In function 'void Freopen(std::string)':
treearray.cpp:35:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
35 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
treearray.cpp:35:76: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
35 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
12 ms |
39516 KB |
n=5 |
| 2 |
Incorrect |
7 ms |
39516 KB |
Unexpected end of file - int32 expected |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
12 ms |
39516 KB |
n=5 |
| 2 |
Incorrect |
7 ms |
39516 KB |
Unexpected end of file - int32 expected |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
12 ms |
39516 KB |
n=5 |
| 2 |
Incorrect |
7 ms |
39516 KB |
Unexpected end of file - int32 expected |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
12 ms |
39516 KB |
n=5 |
| 2 |
Incorrect |
7 ms |
39516 KB |
Unexpected end of file - int32 expected |
| 3 |
Halted |
0 ms |
0 KB |
- |
