oj.uz

Submission #894591

# Submission time Handle Problem Language Result Execution time Memory
894591 2023-12-28T13:46:23 Z zeta7532 Birthday gift (IZhO18_treearray) C++17
100 / 100
 1900 ms 82572 KB 
#include <bits/stdc++.h>
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
using namespace std;
using ll = long long;
const ll mod = 998244353;
#define fi first
#define se second
#define rep(i,n) for(ll i=0;i<n;i++)
#define all(x) x.begin(),x.end()
#define faster ios::sync_with_stdio(false);cin.tie(nullptr)
 
using Graph = vector<vector<ll>>;
 
struct LCA{
    vector<vector<ll>> par;
    vector<ll> dis;
    LCA(const Graph &G,ll root=0){init (G,root);}
    void init(const Graph &G,ll root=0){
        ll v=G.size();
        ll k=1;
        while((1<<k)<v) k++;
        par.assign(k,vector<ll>(v,-1));
        dis.assign(v,-1);
        dfs(G,root,-1,0);
        for(ll i=0;i+1<k;i++){
            for(ll j=0;j<v;j++){
                if(par[i][j]<0) par[i+1][j]=-1;
                else par[i+1][j]=par[i][par[i][j]];
            }
        }
    }
    void dfs(const Graph &G,ll v,ll p,ll d){
        par[0][v]=p;
        dis[v]=d;
        for(ll nv:G[v]){
            if(nv!=p) dfs(G,nv,v,d+1);
        }
    }
    ll query(ll u,ll v){
        if(dis[u]<dis[v]) swap(u,v);
        ll K=par.size();
        for(ll k=0;k<K;k++){
            if((dis[u]-dis[v])>>k&1){
                u=par[k][u];
            }
        }
        if(u==v) return u;
        for(ll k=K-1;k>=0;k--){
            if(par[k][u]!=par[k][v]){
                u=par[k][u];
                v=par[k][v];
            }
        }
        return par[0][u];
    }
    ll get_dis(ll u,ll v){return dis[u]+dis[v]-2*dis[query(u,v)];}
};
 
int main() {
    ll N,M,Q;
    cin >> N >> M >> Q;
    Graph G(N);
    rep(i,N-1){
        ll u,v;
        cin >> u >> v;
        u--,v--;
        G[u].push_back(v);
        G[v].push_back(u);
    }
    auto lca=LCA(G);
    vector<ll> A(M);
    rep(i,M) cin >> A[i],A[i]--;
    set<pair<ll,pair<ll,ll>>> s;
    rep(i,M) s.insert({A[i],{i,i}});
    rep(i,M-1) s.insert({lca.query(A[i],A[i+1]),{i,i+1}});
    s.insert({M,{M,M}});
    while(Q--){
        ll q;
        cin >> q;
        if(q==1){
            ll i,v;
            cin >> i >> v;
            i--,v--;
            s.erase({A[i],{i,i}});
            if(i>0) s.erase({lca.query(A[i-1],A[i]),{i-1,i}});
            if(i<M-1) s.erase({lca.query(A[i],A[i+1]),{i,i+1}});
            A[i]=v;
            s.insert({A[i],{i,i}});
            if(i>0) s.insert({lca.query(A[i-1],A[i]),{i-1,i}});
            if(i<M-1) s.insert({lca.query(A[i],A[i+1]),{i,i+1}});
        }
        if(q==2){
            ll l,r,v;
            cin >> l >> r >> v;
            l--,r--,v--;
            auto it=*s.lower_bound({v,{l,l}});
            if(it.fi==v&&it.se.se<=r){
                cout << it.se.fi+1 << " " << it.se.se+1 << endl;
            }else cout << -1 << " " << -1 << endl;
        }
    }
    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB n=5
2 Correct 1 ms 344 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 344 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 348 KB n=100
8 Correct 1 ms 344 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 1 ms 348 KB n=100
16 Correct 1 ms 344 KB n=100
17 Correct 1 ms 344 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 1 ms 344 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 544 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB n=5
2 Correct 1 ms 344 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 344 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 348 KB n=100
8 Correct 1 ms 344 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 1 ms 348 KB n=100
16 Correct 1 ms 344 KB n=100
17 Correct 1 ms 344 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 1 ms 344 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 544 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Correct 2 ms 348 KB n=500
29 Correct 2 ms 344 KB n=500
30 Correct 2 ms 348 KB n=500
31 Correct 2 ms 348 KB n=500
32 Correct 2 ms 348 KB n=500
33 Correct 2 ms 344 KB n=500
34 Correct 2 ms 348 KB n=500
35 Correct 2 ms 348 KB n=500
36 Correct 2 ms 348 KB n=500
37 Correct 2 ms 348 KB n=500
38 Correct 2 ms 348 KB n=500
39 Correct 2 ms 448 KB n=500
40 Correct 2 ms 344 KB n=500
41 Correct 2 ms 348 KB n=500
42 Correct 2 ms 344 KB n=500
43 Correct 2 ms 348 KB n=500
44 Correct 2 ms 608 KB n=500
45 Correct 2 ms 348 KB n=500
46 Correct 2 ms 344 KB n=500
47 Correct 2 ms 604 KB n=500
48 Correct 2 ms 600 KB n=500
49 Correct 2 ms 348 KB n=500
50 Correct 2 ms 348 KB n=500
51 Correct 2 ms 348 KB n=500
52 Correct 2 ms 376 KB n=500
53 Correct 2 ms 348 KB n=500
54 Correct 2 ms 344 KB n=500
55 Correct 1 ms 348 KB n=278
56 Correct 2 ms 348 KB n=500
57 Correct 2 ms 344 KB n=500
58 Correct 2 ms 348 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB n=5
2 Correct 1 ms 344 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 344 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 348 KB n=100
8 Correct 1 ms 344 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 1 ms 348 KB n=100
16 Correct 1 ms 344 KB n=100
17 Correct 1 ms 344 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 1 ms 344 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 544 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Correct 2 ms 348 KB n=500
29 Correct 2 ms 344 KB n=500
30 Correct 2 ms 348 KB n=500
31 Correct 2 ms 348 KB n=500
32 Correct 2 ms 348 KB n=500
33 Correct 2 ms 344 KB n=500
34 Correct 2 ms 348 KB n=500
35 Correct 2 ms 348 KB n=500
36 Correct 2 ms 348 KB n=500
37 Correct 2 ms 348 KB n=500
38 Correct 2 ms 348 KB n=500
39 Correct 2 ms 448 KB n=500
40 Correct 2 ms 344 KB n=500
41 Correct 2 ms 348 KB n=500
42 Correct 2 ms 344 KB n=500
43 Correct 2 ms 348 KB n=500
44 Correct 2 ms 608 KB n=500
45 Correct 2 ms 348 KB n=500
46 Correct 2 ms 344 KB n=500
47 Correct 2 ms 604 KB n=500
48 Correct 2 ms 600 KB n=500
49 Correct 2 ms 348 KB n=500
50 Correct 2 ms 348 KB n=500
51 Correct 2 ms 348 KB n=500
52 Correct 2 ms 376 KB n=500
53 Correct 2 ms 348 KB n=500
54 Correct 2 ms 344 KB n=500
55 Correct 1 ms 348 KB n=278
56 Correct 2 ms 348 KB n=500
57 Correct 2 ms 344 KB n=500
58 Correct 2 ms 348 KB n=500
59 Correct 6 ms 856 KB n=2000
60 Correct 7 ms 1116 KB n=2000
61 Correct 7 ms 856 KB n=2000
62 Correct 9 ms 860 KB n=2000
63 Correct 6 ms 860 KB n=2000
64 Correct 6 ms 856 KB n=2000
65 Correct 6 ms 860 KB n=2000
66 Correct 6 ms 860 KB n=2000
67 Correct 6 ms 860 KB n=2000
68 Correct 6 ms 860 KB n=2000
69 Correct 6 ms 860 KB n=2000
70 Correct 6 ms 860 KB n=2000
71 Correct 6 ms 860 KB n=2000
72 Correct 8 ms 1232 KB n=2000
73 Correct 8 ms 860 KB n=2000
74 Correct 5 ms 860 KB n=1844
75 Correct 7 ms 860 KB n=2000
76 Correct 6 ms 960 KB n=2000
77 Correct 6 ms 832 KB n=2000
78 Correct 6 ms 860 KB n=2000
79 Correct 5 ms 860 KB n=2000
80 Correct 7 ms 860 KB n=2000
81 Correct 6 ms 1092 KB n=2000
82 Correct 5 ms 856 KB n=2000
83 Correct 9 ms 860 KB n=2000
84 Correct 6 ms 860 KB n=2000
85 Correct 8 ms 1080 KB n=2000
86 Correct 6 ms 856 KB n=2000
87 Correct 6 ms 856 KB n=2000
88 Correct 6 ms 1116 KB n=2000
89 Correct 6 ms 1116 KB n=2000
90 Correct 6 ms 1116 KB n=2000
91 Correct 6 ms 860 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB n=5
2 Correct 1 ms 344 KB n=100
3 Correct 1 ms 348 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 344 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 1 ms 348 KB n=100
8 Correct 1 ms 344 KB n=100
9 Correct 1 ms 348 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 1 ms 348 KB n=100
16 Correct 1 ms 344 KB n=100
17 Correct 1 ms 344 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 1 ms 348 KB n=100
20 Correct 1 ms 348 KB n=100
21 Correct 1 ms 344 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 348 KB n=100
25 Correct 1 ms 544 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Correct 2 ms 348 KB n=500
29 Correct 2 ms 344 KB n=500
30 Correct 2 ms 348 KB n=500
31 Correct 2 ms 348 KB n=500
32 Correct 2 ms 348 KB n=500
33 Correct 2 ms 344 KB n=500
34 Correct 2 ms 348 KB n=500
35 Correct 2 ms 348 KB n=500
36 Correct 2 ms 348 KB n=500
37 Correct 2 ms 348 KB n=500
38 Correct 2 ms 348 KB n=500
39 Correct 2 ms 448 KB n=500
40 Correct 2 ms 344 KB n=500
41 Correct 2 ms 348 KB n=500
42 Correct 2 ms 344 KB n=500
43 Correct 2 ms 348 KB n=500
44 Correct 2 ms 608 KB n=500
45 Correct 2 ms 348 KB n=500
46 Correct 2 ms 344 KB n=500
47 Correct 2 ms 604 KB n=500
48 Correct 2 ms 600 KB n=500
49 Correct 2 ms 348 KB n=500
50 Correct 2 ms 348 KB n=500
51 Correct 2 ms 348 KB n=500
52 Correct 2 ms 376 KB n=500
53 Correct 2 ms 348 KB n=500
54 Correct 2 ms 344 KB n=500
55 Correct 1 ms 348 KB n=278
56 Correct 2 ms 348 KB n=500
57 Correct 2 ms 344 KB n=500
58 Correct 2 ms 348 KB n=500
59 Correct 6 ms 856 KB n=2000
60 Correct 7 ms 1116 KB n=2000
61 Correct 7 ms 856 KB n=2000
62 Correct 9 ms 860 KB n=2000
63 Correct 6 ms 860 KB n=2000
64 Correct 6 ms 856 KB n=2000
65 Correct 6 ms 860 KB n=2000
66 Correct 6 ms 860 KB n=2000
67 Correct 6 ms 860 KB n=2000
68 Correct 6 ms 860 KB n=2000
69 Correct 6 ms 860 KB n=2000
70 Correct 6 ms 860 KB n=2000
71 Correct 6 ms 860 KB n=2000
72 Correct 8 ms 1232 KB n=2000
73 Correct 8 ms 860 KB n=2000
74 Correct 5 ms 860 KB n=1844
75 Correct 7 ms 860 KB n=2000
76 Correct 6 ms 960 KB n=2000
77 Correct 6 ms 832 KB n=2000
78 Correct 6 ms 860 KB n=2000
79 Correct 5 ms 860 KB n=2000
80 Correct 7 ms 860 KB n=2000
81 Correct 6 ms 1092 KB n=2000
82 Correct 5 ms 856 KB n=2000
83 Correct 9 ms 860 KB n=2000
84 Correct 6 ms 860 KB n=2000
85 Correct 8 ms 1080 KB n=2000
86 Correct 6 ms 856 KB n=2000
87 Correct 6 ms 856 KB n=2000
88 Correct 6 ms 1116 KB n=2000
89 Correct 6 ms 1116 KB n=2000
90 Correct 6 ms 1116 KB n=2000
91 Correct 6 ms 860 KB n=2000
92 Correct 1178 ms 76924 KB n=200000
93 Correct 1820 ms 80392 KB n=200000
94 Correct 1805 ms 82120 KB n=200000
95 Correct 1117 ms 76724 KB n=200000
96 Correct 1154 ms 77056 KB n=200000
97 Correct 1857 ms 79772 KB n=200000
98 Correct 1141 ms 76656 KB n=200000
99 Correct 1401 ms 76912 KB n=200000
100 Correct 1217 ms 76736 KB n=200000
101 Correct 1734 ms 82572 KB n=200000
102 Correct 816 ms 78204 KB n=200000
103 Correct 787 ms 78236 KB n=200000
104 Correct 794 ms 78132 KB n=200000
105 Correct 793 ms 78800 KB n=200000
106 Correct 828 ms 78312 KB n=200000
107 Correct 783 ms 78400 KB n=200000
108 Correct 1415 ms 77408 KB n=200000
109 Correct 1335 ms 76956 KB n=200000
110 Correct 1331 ms 77112 KB n=200000
111 Correct 1076 ms 76352 KB n=200000
112 Correct 1760 ms 82344 KB n=200000
113 Correct 1807 ms 79672 KB n=200000
114 Correct 1062 ms 76616 KB n=200000
115 Correct 1893 ms 78360 KB n=200000
116 Correct 1152 ms 77012 KB n=200000
117 Correct 1760 ms 82568 KB n=200000
118 Correct 1900 ms 78892 KB n=200000
119 Correct 1096 ms 77200 KB n=200000
120 Correct 1609 ms 81476 KB n=200000
121 Correct 1618 ms 82192 KB n=200000
122 Correct 1696 ms 82380 KB n=200000
123 Correct 795 ms 78388 KB n=200000
124 Correct 295 ms 19808 KB n=25264