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Submission #89721

# Submission time Handle Problem Language Result Execution time Memory
89721 2018-12-18T08:14:58 Z Abelyan Birthday gift (IZhO18_treearray) C++14
100 / 100
 1678 ms 107212 KB 
#include <bits/stdc++.h>
using namespace std;

const int N=200005;
const int LG=log2(N)+3;

vector<int> g[N];
int anc[N][LG];
int n,m,q,l;
int in[N],out[N],timer;

void dfs(int v,int par=0){
    in[v]=timer++;
    anc[v][0]=par;
    for (int i=1;i<=l;i++){
        anc[v][i]=anc[anc[v][i-1]][i-1];
    }
    for (auto to:g[v]){
        if (to==par)continue;
        dfs(to,v);
    }
    out[v]=timer++;
}

bool is_anc(int a,int b){
    if (b==0 || a==b)return true;
    if (in[a]>in[b] && in[a]<out[b])return true;
    return false;
}

int lca(int a,int b){
    if (is_anc(a,b)) return b;
    if (is_anc(b,a)) return a;
    for (int i=l;i>=0;i--)
        if (!is_anc(b,anc[a][i]))
            a=anc[a][i];
    return anc[a][0];
}

int a[N];
set<int> sl[N],pr[N];
set<int>::iterator it;
int main(){
    ios_base::sync_with_stdio(false);
    //freopen("input.txt","r",stdin);
    cin>>n>>m>>q;
    l=0;
    while ((1<<l)<=n)l++;
    for (int i=0;i<n-1;i++){
        int a,b;
        cin>>a>>b;
        g[a].push_back(b);
        g[b].push_back(a);
    }
    dfs(1);
    for (int i=1;i<=m;i++){
        cin>>a[i];
        sl[a[i]].insert(i);
        if (i!=1){
            //cout<<lca(a[i],a[i-1])<<" "<<i-1<<endl;
            pr[lca(a[i],a[i-1])].insert(i-1);
            //cout<<lca(a[i],a[i-1])<<" "<<i-1<<endl;
        }
    }
    for (int i=0;i<q;i++){
        int type;
        cin>>type;
        if (type==1){
            int ind,val;
            cin>>ind>>val;
            sl[a[ind]].erase(sl[a[ind]].find(ind));
            sl[val].insert(ind);
            if (ind!=1){
                int oldval=lca(a[ind],a[ind-1]),newval=lca(val,a[ind-1]);
                pr[oldval].erase(pr[oldval].find(ind-1));
                pr[newval].insert(ind-1);
            }
            if (ind!=m){
                int oldval=lca(a[ind],a[ind+1]),newval=lca(val,a[ind+1]);
                //cout<<oldval<<" "<<ind<<endl;
                pr[oldval].erase(pr[oldval].find(ind));
                pr[newval].insert(ind);
            }
            a[ind]=val;
        }
        else{
            int l,r,v;
            cin>>l>>r>>v;
            if (sl[v].size()){
                it=sl[v].lower_bound(l);
                if (it!=sl[v].end() && *it<=r){
                    cout<<*it<<" "<<*it<<endl;
                    continue;
                }
            }
            if (pr[v].size()){
                it=pr[v].lower_bound(l);
                if (it!=pr[v].end() && *it<r){
                    //cout<<*it<<endl;
                    cout<<*it<<" "<<*it+1<<endl;
                    continue;
                }
            }
            cout<<-1<<" "<<-1<<endl;
        }
    }
    return 0;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB n=5
2 Correct 22 ms 23932 KB n=100
3 Correct 25 ms 24136 KB n=100
4 Correct 22 ms 24136 KB n=100
5 Correct 21 ms 24136 KB n=100
6 Correct 61 ms 24136 KB n=100
7 Correct 22 ms 24136 KB n=100
8 Correct 23 ms 24136 KB n=100
9 Correct 23 ms 24136 KB n=100
10 Correct 22 ms 24136 KB n=100
11 Correct 22 ms 24136 KB n=100
12 Correct 22 ms 24136 KB n=100
13 Correct 24 ms 24136 KB n=100
14 Correct 22 ms 24136 KB n=100
15 Correct 22 ms 24136 KB n=100
16 Correct 22 ms 24136 KB n=100
17 Correct 22 ms 24136 KB n=100
18 Correct 22 ms 24172 KB n=100
19 Correct 24 ms 24172 KB n=100
20 Correct 26 ms 24172 KB n=100
21 Correct 26 ms 24216 KB n=100
22 Correct 25 ms 24216 KB n=100
23 Correct 26 ms 24216 KB n=100
24 Correct 25 ms 24216 KB n=100
25 Correct 25 ms 24260 KB n=100
26 Correct 26 ms 24260 KB n=12
27 Correct 26 ms 24260 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB n=5
2 Correct 22 ms 23932 KB n=100
3 Correct 25 ms 24136 KB n=100
4 Correct 22 ms 24136 KB n=100
5 Correct 21 ms 24136 KB n=100
6 Correct 61 ms 24136 KB n=100
7 Correct 22 ms 24136 KB n=100
8 Correct 23 ms 24136 KB n=100
9 Correct 23 ms 24136 KB n=100
10 Correct 22 ms 24136 KB n=100
11 Correct 22 ms 24136 KB n=100
12 Correct 22 ms 24136 KB n=100
13 Correct 24 ms 24136 KB n=100
14 Correct 22 ms 24136 KB n=100
15 Correct 22 ms 24136 KB n=100
16 Correct 22 ms 24136 KB n=100
17 Correct 22 ms 24136 KB n=100
18 Correct 22 ms 24172 KB n=100
19 Correct 24 ms 24172 KB n=100
20 Correct 26 ms 24172 KB n=100
21 Correct 26 ms 24216 KB n=100
22 Correct 25 ms 24216 KB n=100
23 Correct 26 ms 24216 KB n=100
24 Correct 25 ms 24216 KB n=100
25 Correct 25 ms 24260 KB n=100
26 Correct 26 ms 24260 KB n=12
27 Correct 26 ms 24260 KB n=100
28 Correct 26 ms 24272 KB n=500
29 Correct 27 ms 24284 KB n=500
30 Correct 26 ms 24300 KB n=500
31 Correct 27 ms 24320 KB n=500
32 Correct 23 ms 24332 KB n=500
33 Correct 26 ms 24472 KB n=500
34 Correct 24 ms 24472 KB n=500
35 Correct 26 ms 24472 KB n=500
36 Correct 23 ms 24472 KB n=500
37 Correct 26 ms 24472 KB n=500
38 Correct 22 ms 24472 KB n=500
39 Correct 23 ms 24472 KB n=500
40 Correct 23 ms 24472 KB n=500
41 Correct 22 ms 24472 KB n=500
42 Correct 22 ms 24472 KB n=500
43 Correct 23 ms 24472 KB n=500
44 Correct 23 ms 24472 KB n=500
45 Correct 23 ms 24472 KB n=500
46 Correct 26 ms 24472 KB n=500
47 Correct 23 ms 24472 KB n=500
48 Correct 23 ms 24472 KB n=500
49 Correct 23 ms 24472 KB n=500
50 Correct 22 ms 24472 KB n=500
51 Correct 22 ms 24472 KB n=500
52 Correct 23 ms 24472 KB n=500
53 Correct 23 ms 24472 KB n=500
54 Correct 26 ms 24524 KB n=500
55 Correct 25 ms 24524 KB n=278
56 Correct 26 ms 24524 KB n=500
57 Correct 26 ms 24572 KB n=500
58 Correct 23 ms 24572 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB n=5
2 Correct 22 ms 23932 KB n=100
3 Correct 25 ms 24136 KB n=100
4 Correct 22 ms 24136 KB n=100
5 Correct 21 ms 24136 KB n=100
6 Correct 61 ms 24136 KB n=100
7 Correct 22 ms 24136 KB n=100
8 Correct 23 ms 24136 KB n=100
9 Correct 23 ms 24136 KB n=100
10 Correct 22 ms 24136 KB n=100
11 Correct 22 ms 24136 KB n=100
12 Correct 22 ms 24136 KB n=100
13 Correct 24 ms 24136 KB n=100
14 Correct 22 ms 24136 KB n=100
15 Correct 22 ms 24136 KB n=100
16 Correct 22 ms 24136 KB n=100
17 Correct 22 ms 24136 KB n=100
18 Correct 22 ms 24172 KB n=100
19 Correct 24 ms 24172 KB n=100
20 Correct 26 ms 24172 KB n=100
21 Correct 26 ms 24216 KB n=100
22 Correct 25 ms 24216 KB n=100
23 Correct 26 ms 24216 KB n=100
24 Correct 25 ms 24216 KB n=100
25 Correct 25 ms 24260 KB n=100
26 Correct 26 ms 24260 KB n=12
27 Correct 26 ms 24260 KB n=100
28 Correct 26 ms 24272 KB n=500
29 Correct 27 ms 24284 KB n=500
30 Correct 26 ms 24300 KB n=500
31 Correct 27 ms 24320 KB n=500
32 Correct 23 ms 24332 KB n=500
33 Correct 26 ms 24472 KB n=500
34 Correct 24 ms 24472 KB n=500
35 Correct 26 ms 24472 KB n=500
36 Correct 23 ms 24472 KB n=500
37 Correct 26 ms 24472 KB n=500
38 Correct 22 ms 24472 KB n=500
39 Correct 23 ms 24472 KB n=500
40 Correct 23 ms 24472 KB n=500
41 Correct 22 ms 24472 KB n=500
42 Correct 22 ms 24472 KB n=500
43 Correct 23 ms 24472 KB n=500
44 Correct 23 ms 24472 KB n=500
45 Correct 23 ms 24472 KB n=500
46 Correct 26 ms 24472 KB n=500
47 Correct 23 ms 24472 KB n=500
48 Correct 23 ms 24472 KB n=500
49 Correct 23 ms 24472 KB n=500
50 Correct 22 ms 24472 KB n=500
51 Correct 22 ms 24472 KB n=500
52 Correct 23 ms 24472 KB n=500
53 Correct 23 ms 24472 KB n=500
54 Correct 26 ms 24524 KB n=500
55 Correct 25 ms 24524 KB n=278
56 Correct 26 ms 24524 KB n=500
57 Correct 26 ms 24572 KB n=500
58 Correct 23 ms 24572 KB n=500
59 Correct 27 ms 24780 KB n=2000
60 Correct 27 ms 24908 KB n=2000
61 Correct 31 ms 24908 KB n=2000
62 Correct 32 ms 24908 KB n=2000
63 Correct 28 ms 24908 KB n=2000
64 Correct 31 ms 24908 KB n=2000
65 Correct 30 ms 24908 KB n=2000
66 Correct 30 ms 24908 KB n=2000
67 Correct 27 ms 24908 KB n=2000
68 Correct 31 ms 24908 KB n=2000
69 Correct 31 ms 24908 KB n=2000
70 Correct 30 ms 24908 KB n=2000
71 Correct 30 ms 24908 KB n=2000
72 Correct 31 ms 24908 KB n=2000
73 Correct 31 ms 24908 KB n=2000
74 Correct 27 ms 24908 KB n=1844
75 Correct 32 ms 24964 KB n=2000
76 Correct 27 ms 24964 KB n=2000
77 Correct 29 ms 24964 KB n=2000
78 Correct 30 ms 24964 KB n=2000
79 Correct 28 ms 24964 KB n=2000
80 Correct 31 ms 24964 KB n=2000
81 Correct 30 ms 24964 KB n=2000
82 Correct 31 ms 24964 KB n=2000
83 Correct 30 ms 24964 KB n=2000
84 Correct 30 ms 24964 KB n=2000
85 Correct 31 ms 24964 KB n=2000
86 Correct 31 ms 24964 KB n=2000
87 Correct 30 ms 24964 KB n=2000
88 Correct 30 ms 24964 KB n=2000
89 Correct 30 ms 24964 KB n=2000
90 Correct 30 ms 24964 KB n=2000
91 Correct 32 ms 24964 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 23800 KB n=5
2 Correct 22 ms 23932 KB n=100
3 Correct 25 ms 24136 KB n=100
4 Correct 22 ms 24136 KB n=100
5 Correct 21 ms 24136 KB n=100
6 Correct 61 ms 24136 KB n=100
7 Correct 22 ms 24136 KB n=100
8 Correct 23 ms 24136 KB n=100
9 Correct 23 ms 24136 KB n=100
10 Correct 22 ms 24136 KB n=100
11 Correct 22 ms 24136 KB n=100
12 Correct 22 ms 24136 KB n=100
13 Correct 24 ms 24136 KB n=100
14 Correct 22 ms 24136 KB n=100
15 Correct 22 ms 24136 KB n=100
16 Correct 22 ms 24136 KB n=100
17 Correct 22 ms 24136 KB n=100
18 Correct 22 ms 24172 KB n=100
19 Correct 24 ms 24172 KB n=100
20 Correct 26 ms 24172 KB n=100
21 Correct 26 ms 24216 KB n=100
22 Correct 25 ms 24216 KB n=100
23 Correct 26 ms 24216 KB n=100
24 Correct 25 ms 24216 KB n=100
25 Correct 25 ms 24260 KB n=100
26 Correct 26 ms 24260 KB n=12
27 Correct 26 ms 24260 KB n=100
28 Correct 26 ms 24272 KB n=500
29 Correct 27 ms 24284 KB n=500
30 Correct 26 ms 24300 KB n=500
31 Correct 27 ms 24320 KB n=500
32 Correct 23 ms 24332 KB n=500
33 Correct 26 ms 24472 KB n=500
34 Correct 24 ms 24472 KB n=500
35 Correct 26 ms 24472 KB n=500
36 Correct 23 ms 24472 KB n=500
37 Correct 26 ms 24472 KB n=500
38 Correct 22 ms 24472 KB n=500
39 Correct 23 ms 24472 KB n=500
40 Correct 23 ms 24472 KB n=500
41 Correct 22 ms 24472 KB n=500
42 Correct 22 ms 24472 KB n=500
43 Correct 23 ms 24472 KB n=500
44 Correct 23 ms 24472 KB n=500
45 Correct 23 ms 24472 KB n=500
46 Correct 26 ms 24472 KB n=500
47 Correct 23 ms 24472 KB n=500
48 Correct 23 ms 24472 KB n=500
49 Correct 23 ms 24472 KB n=500
50 Correct 22 ms 24472 KB n=500
51 Correct 22 ms 24472 KB n=500
52 Correct 23 ms 24472 KB n=500
53 Correct 23 ms 24472 KB n=500
54 Correct 26 ms 24524 KB n=500
55 Correct 25 ms 24524 KB n=278
56 Correct 26 ms 24524 KB n=500
57 Correct 26 ms 24572 KB n=500
58 Correct 23 ms 24572 KB n=500
59 Correct 27 ms 24780 KB n=2000
60 Correct 27 ms 24908 KB n=2000
61 Correct 31 ms 24908 KB n=2000
62 Correct 32 ms 24908 KB n=2000
63 Correct 28 ms 24908 KB n=2000
64 Correct 31 ms 24908 KB n=2000
65 Correct 30 ms 24908 KB n=2000
66 Correct 30 ms 24908 KB n=2000
67 Correct 27 ms 24908 KB n=2000
68 Correct 31 ms 24908 KB n=2000
69 Correct 31 ms 24908 KB n=2000
70 Correct 30 ms 24908 KB n=2000
71 Correct 30 ms 24908 KB n=2000
72 Correct 31 ms 24908 KB n=2000
73 Correct 31 ms 24908 KB n=2000
74 Correct 27 ms 24908 KB n=1844
75 Correct 32 ms 24964 KB n=2000
76 Correct 27 ms 24964 KB n=2000
77 Correct 29 ms 24964 KB n=2000
78 Correct 30 ms 24964 KB n=2000
79 Correct 28 ms 24964 KB n=2000
80 Correct 31 ms 24964 KB n=2000
81 Correct 30 ms 24964 KB n=2000
82 Correct 31 ms 24964 KB n=2000
83 Correct 30 ms 24964 KB n=2000
84 Correct 30 ms 24964 KB n=2000
85 Correct 31 ms 24964 KB n=2000
86 Correct 31 ms 24964 KB n=2000
87 Correct 30 ms 24964 KB n=2000
88 Correct 30 ms 24964 KB n=2000
89 Correct 30 ms 24964 KB n=2000
90 Correct 30 ms 24964 KB n=2000
91 Correct 32 ms 24964 KB n=2000
92 Correct 1238 ms 69776 KB n=200000
93 Correct 1445 ms 74996 KB n=200000
94 Correct 1129 ms 78292 KB n=200000
95 Correct 1271 ms 78292 KB n=200000
96 Correct 997 ms 78292 KB n=200000
97 Correct 1268 ms 78292 KB n=200000
98 Correct 1002 ms 78292 KB n=200000
99 Correct 1218 ms 78292 KB n=200000
100 Correct 1211 ms 78292 KB n=200000
101 Correct 876 ms 91200 KB n=200000
102 Correct 837 ms 91200 KB n=200000
103 Correct 939 ms 96992 KB n=200000
104 Correct 946 ms 99560 KB n=200000
105 Correct 956 ms 99560 KB n=200000
106 Correct 930 ms 99560 KB n=200000
107 Correct 859 ms 99560 KB n=200000
108 Correct 1090 ms 99560 KB n=200000
109 Correct 1057 ms 99560 KB n=200000
110 Correct 1046 ms 99560 KB n=200000
111 Correct 1120 ms 99560 KB n=200000
112 Correct 1002 ms 106104 KB n=200000
113 Correct 1209 ms 106104 KB n=200000
114 Correct 1155 ms 106104 KB n=200000
115 Correct 1605 ms 106104 KB n=200000
116 Correct 1105 ms 106104 KB n=200000
117 Correct 1126 ms 106424 KB n=200000
118 Correct 1678 ms 106424 KB n=200000
119 Correct 1040 ms 106424 KB n=200000
120 Correct 960 ms 106764 KB n=200000
121 Correct 957 ms 106956 KB n=200000
122 Correct 951 ms 107212 KB n=200000
123 Correct 946 ms 107212 KB n=200000
124 Correct 274 ms 107212 KB n=25264