oj.uz

Submission #542384

# Submission time Handle Problem Language Result Execution time Memory
542384 2022-03-26T10:31:42 Z krit3379 Birthday gift (IZhO18_treearray) C++17
100 / 100
 1107 ms 77592 KB 
#include<bits/stdc++.h>
using namespace std;
#define N 200005
 
int dep[N],bp[20][N],val[N];
vector<int> g[N];
set<int> s[N],ss[N];
 
void dfs(int s,int f){
    dep[s]=dep[f]+1;
    bp[0][s]=f;
    for(auto x:g[s])if(x!=f)dfs(x,s);
}
 
int lca(int a,int b){
    if(dep[a]>dep[b])swap(a,b);
    int i,dif=dep[b]-dep[a];
    for(i=0;i<20;i++)if(dif&(1<<i))b=bp[i][b];
    if(a==b)return a;
    for(i=19;i>=0;i--)if(bp[i][a]!=bp[i][b]){
        a=bp[i][a];
        b=bp[i][b];
    }
    return bp[0][a];
}
 
int main(){
    int n,m,q,i,j,a,b,op,pos,v,l,r;
    scanf("%d %d %d",&n,&m,&q);
    for(i=1;i<n;i++){
        scanf("%d %d",&a,&b);
        g[a].push_back(b);
        g[b].push_back(a);
    }
    for(i=1;i<=m;i++)scanf("%d",&val[i]),s[val[i]].insert(i);
    dfs(1,1);
    for(i=1;i<20;i++)for(j=1;j<=n;j++)bp[i][j]=bp[i-1][bp[i-1][j]];
    for(i=1;i<m;i++)ss[lca(val[i],val[i+1])].insert(i);
    while(q--){
        scanf("%d",&op);
        if(op==1){
            scanf("%d %d",&pos,&v);
            s[val[pos]].erase(pos);
            s[v].insert(pos);
            if(pos>1){
                ss[lca(val[pos],val[pos-1])].erase(pos-1);
                ss[lca(v,val[pos-1])].insert(pos-1);
            }
            if(pos<m){
                ss[lca(val[pos],val[pos+1])].erase(pos);
                ss[lca(v,val[pos+1])].insert(pos);
            }
            val[pos]=v;
        }
        else{
            scanf("%d %d %d",&l,&r,&v);
            auto it1=s[v].lower_bound(l),it2=ss[v].lower_bound(l);
            if(it1!=s[v].end()&&*it1<=r)printf("%d %d\n",*it1,*it1);
            else if(it2!=ss[v].end()&&*it2<r)printf("%d %d\n",*it2,*it2+1);
            else printf("-1 -1\n");
        }
    }
    return 0;
}

Compilation message

treearray.cpp: In function 'int main()':
treearray.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     scanf("%d %d %d",&n,&m,&q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~
treearray.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         scanf("%d %d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~~
treearray.cpp:35:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     for(i=1;i<=m;i++)scanf("%d",&val[i]),s[val[i]].insert(i);
      |                      ~~~~~^~~~~~~~~~~~~~
treearray.cpp:40:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         scanf("%d",&op);
      |         ~~~~~^~~~~~~~~~
treearray.cpp:42:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |             scanf("%d %d",&pos,&v);
      |             ~~~~~^~~~~~~~~~~~~~~~~
treearray.cpp:56:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |             scanf("%d %d %d",&l,&r,&v);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB n=5
2 Correct 13 ms 23892 KB n=100
3 Correct 13 ms 23924 KB n=100
4 Correct 13 ms 23892 KB n=100
5 Correct 13 ms 23892 KB n=100
6 Correct 13 ms 23812 KB n=100
7 Correct 12 ms 23916 KB n=100
8 Correct 12 ms 23868 KB n=100
9 Correct 14 ms 23892 KB n=100
10 Correct 14 ms 23892 KB n=100
11 Correct 13 ms 23892 KB n=100
12 Correct 14 ms 23892 KB n=100
13 Correct 14 ms 23920 KB n=100
14 Correct 14 ms 23892 KB n=100
15 Correct 12 ms 23892 KB n=100
16 Correct 12 ms 23892 KB n=100
17 Correct 14 ms 23892 KB n=100
18 Correct 13 ms 23848 KB n=100
19 Correct 13 ms 23892 KB n=100
20 Correct 25 ms 23876 KB n=100
21 Correct 14 ms 23892 KB n=100
22 Correct 13 ms 23892 KB n=100
23 Correct 12 ms 23920 KB n=100
24 Correct 13 ms 23892 KB n=100
25 Correct 25 ms 23860 KB n=100
26 Correct 13 ms 23852 KB n=12
27 Correct 14 ms 23892 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB n=5
2 Correct 13 ms 23892 KB n=100
3 Correct 13 ms 23924 KB n=100
4 Correct 13 ms 23892 KB n=100
5 Correct 13 ms 23892 KB n=100
6 Correct 13 ms 23812 KB n=100
7 Correct 12 ms 23916 KB n=100
8 Correct 12 ms 23868 KB n=100
9 Correct 14 ms 23892 KB n=100
10 Correct 14 ms 23892 KB n=100
11 Correct 13 ms 23892 KB n=100
12 Correct 14 ms 23892 KB n=100
13 Correct 14 ms 23920 KB n=100
14 Correct 14 ms 23892 KB n=100
15 Correct 12 ms 23892 KB n=100
16 Correct 12 ms 23892 KB n=100
17 Correct 14 ms 23892 KB n=100
18 Correct 13 ms 23848 KB n=100
19 Correct 13 ms 23892 KB n=100
20 Correct 25 ms 23876 KB n=100
21 Correct 14 ms 23892 KB n=100
22 Correct 13 ms 23892 KB n=100
23 Correct 12 ms 23920 KB n=100
24 Correct 13 ms 23892 KB n=100
25 Correct 25 ms 23860 KB n=100
26 Correct 13 ms 23852 KB n=12
27 Correct 14 ms 23892 KB n=100
28 Correct 12 ms 24000 KB n=500
29 Correct 12 ms 24020 KB n=500
30 Correct 23 ms 23932 KB n=500
31 Correct 14 ms 24020 KB n=500
32 Correct 12 ms 24020 KB n=500
33 Correct 15 ms 23932 KB n=500
34 Correct 14 ms 23932 KB n=500
35 Correct 14 ms 24020 KB n=500
36 Correct 20 ms 23976 KB n=500
37 Correct 13 ms 23936 KB n=500
38 Correct 13 ms 23912 KB n=500
39 Correct 15 ms 24020 KB n=500
40 Correct 13 ms 24032 KB n=500
41 Correct 14 ms 23920 KB n=500
42 Correct 13 ms 23928 KB n=500
43 Correct 13 ms 23932 KB n=500
44 Correct 13 ms 24020 KB n=500
45 Correct 25 ms 24020 KB n=500
46 Correct 13 ms 24020 KB n=500
47 Correct 14 ms 23984 KB n=500
48 Correct 14 ms 24020 KB n=500
49 Correct 14 ms 24020 KB n=500
50 Correct 13 ms 24020 KB n=500
51 Correct 13 ms 23940 KB n=500
52 Correct 13 ms 24020 KB n=500
53 Correct 16 ms 24020 KB n=500
54 Correct 15 ms 24020 KB n=500
55 Correct 13 ms 23916 KB n=278
56 Correct 14 ms 23928 KB n=500
57 Correct 14 ms 24028 KB n=500
58 Correct 13 ms 24020 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB n=5
2 Correct 13 ms 23892 KB n=100
3 Correct 13 ms 23924 KB n=100
4 Correct 13 ms 23892 KB n=100
5 Correct 13 ms 23892 KB n=100
6 Correct 13 ms 23812 KB n=100
7 Correct 12 ms 23916 KB n=100
8 Correct 12 ms 23868 KB n=100
9 Correct 14 ms 23892 KB n=100
10 Correct 14 ms 23892 KB n=100
11 Correct 13 ms 23892 KB n=100
12 Correct 14 ms 23892 KB n=100
13 Correct 14 ms 23920 KB n=100
14 Correct 14 ms 23892 KB n=100
15 Correct 12 ms 23892 KB n=100
16 Correct 12 ms 23892 KB n=100
17 Correct 14 ms 23892 KB n=100
18 Correct 13 ms 23848 KB n=100
19 Correct 13 ms 23892 KB n=100
20 Correct 25 ms 23876 KB n=100
21 Correct 14 ms 23892 KB n=100
22 Correct 13 ms 23892 KB n=100
23 Correct 12 ms 23920 KB n=100
24 Correct 13 ms 23892 KB n=100
25 Correct 25 ms 23860 KB n=100
26 Correct 13 ms 23852 KB n=12
27 Correct 14 ms 23892 KB n=100
28 Correct 12 ms 24000 KB n=500
29 Correct 12 ms 24020 KB n=500
30 Correct 23 ms 23932 KB n=500
31 Correct 14 ms 24020 KB n=500
32 Correct 12 ms 24020 KB n=500
33 Correct 15 ms 23932 KB n=500
34 Correct 14 ms 23932 KB n=500
35 Correct 14 ms 24020 KB n=500
36 Correct 20 ms 23976 KB n=500
37 Correct 13 ms 23936 KB n=500
38 Correct 13 ms 23912 KB n=500
39 Correct 15 ms 24020 KB n=500
40 Correct 13 ms 24032 KB n=500
41 Correct 14 ms 23920 KB n=500
42 Correct 13 ms 23928 KB n=500
43 Correct 13 ms 23932 KB n=500
44 Correct 13 ms 24020 KB n=500
45 Correct 25 ms 24020 KB n=500
46 Correct 13 ms 24020 KB n=500
47 Correct 14 ms 23984 KB n=500
48 Correct 14 ms 24020 KB n=500
49 Correct 14 ms 24020 KB n=500
50 Correct 13 ms 24020 KB n=500
51 Correct 13 ms 23940 KB n=500
52 Correct 13 ms 24020 KB n=500
53 Correct 16 ms 24020 KB n=500
54 Correct 15 ms 24020 KB n=500
55 Correct 13 ms 23916 KB n=278
56 Correct 14 ms 23928 KB n=500
57 Correct 14 ms 24028 KB n=500
58 Correct 13 ms 24020 KB n=500
59 Correct 16 ms 24332 KB n=2000
60 Correct 15 ms 24412 KB n=2000
61 Correct 17 ms 24412 KB n=2000
62 Correct 16 ms 24404 KB n=2000
63 Correct 15 ms 24284 KB n=2000
64 Correct 31 ms 24408 KB n=2000
65 Correct 16 ms 24328 KB n=2000
66 Correct 16 ms 24448 KB n=2000
67 Correct 23 ms 24280 KB n=2000
68 Correct 16 ms 24324 KB n=2000
69 Correct 15 ms 24360 KB n=2000
70 Correct 14 ms 24276 KB n=2000
71 Correct 30 ms 24272 KB n=2000
72 Correct 20 ms 24356 KB n=2000
73 Correct 16 ms 24276 KB n=2000
74 Correct 15 ms 24276 KB n=1844
75 Correct 15 ms 24280 KB n=2000
76 Correct 16 ms 24276 KB n=2000
77 Correct 16 ms 24340 KB n=2000
78 Correct 16 ms 24276 KB n=2000
79 Correct 15 ms 24276 KB n=2000
80 Correct 17 ms 24404 KB n=2000
81 Correct 19 ms 24404 KB n=2000
82 Correct 15 ms 24276 KB n=2000
83 Correct 15 ms 24372 KB n=2000
84 Correct 26 ms 24284 KB n=2000
85 Correct 16 ms 24404 KB n=2000
86 Correct 23 ms 24376 KB n=2000
87 Correct 17 ms 24268 KB n=2000
88 Correct 16 ms 24416 KB n=2000
89 Correct 16 ms 24416 KB n=2000
90 Correct 16 ms 24448 KB n=2000
91 Correct 16 ms 24280 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB n=5
2 Correct 13 ms 23892 KB n=100
3 Correct 13 ms 23924 KB n=100
4 Correct 13 ms 23892 KB n=100
5 Correct 13 ms 23892 KB n=100
6 Correct 13 ms 23812 KB n=100
7 Correct 12 ms 23916 KB n=100
8 Correct 12 ms 23868 KB n=100
9 Correct 14 ms 23892 KB n=100
10 Correct 14 ms 23892 KB n=100
11 Correct 13 ms 23892 KB n=100
12 Correct 14 ms 23892 KB n=100
13 Correct 14 ms 23920 KB n=100
14 Correct 14 ms 23892 KB n=100
15 Correct 12 ms 23892 KB n=100
16 Correct 12 ms 23892 KB n=100
17 Correct 14 ms 23892 KB n=100
18 Correct 13 ms 23848 KB n=100
19 Correct 13 ms 23892 KB n=100
20 Correct 25 ms 23876 KB n=100
21 Correct 14 ms 23892 KB n=100
22 Correct 13 ms 23892 KB n=100
23 Correct 12 ms 23920 KB n=100
24 Correct 13 ms 23892 KB n=100
25 Correct 25 ms 23860 KB n=100
26 Correct 13 ms 23852 KB n=12
27 Correct 14 ms 23892 KB n=100
28 Correct 12 ms 24000 KB n=500
29 Correct 12 ms 24020 KB n=500
30 Correct 23 ms 23932 KB n=500
31 Correct 14 ms 24020 KB n=500
32 Correct 12 ms 24020 KB n=500
33 Correct 15 ms 23932 KB n=500
34 Correct 14 ms 23932 KB n=500
35 Correct 14 ms 24020 KB n=500
36 Correct 20 ms 23976 KB n=500
37 Correct 13 ms 23936 KB n=500
38 Correct 13 ms 23912 KB n=500
39 Correct 15 ms 24020 KB n=500
40 Correct 13 ms 24032 KB n=500
41 Correct 14 ms 23920 KB n=500
42 Correct 13 ms 23928 KB n=500
43 Correct 13 ms 23932 KB n=500
44 Correct 13 ms 24020 KB n=500
45 Correct 25 ms 24020 KB n=500
46 Correct 13 ms 24020 KB n=500
47 Correct 14 ms 23984 KB n=500
48 Correct 14 ms 24020 KB n=500
49 Correct 14 ms 24020 KB n=500
50 Correct 13 ms 24020 KB n=500
51 Correct 13 ms 23940 KB n=500
52 Correct 13 ms 24020 KB n=500
53 Correct 16 ms 24020 KB n=500
54 Correct 15 ms 24020 KB n=500
55 Correct 13 ms 23916 KB n=278
56 Correct 14 ms 23928 KB n=500
57 Correct 14 ms 24028 KB n=500
58 Correct 13 ms 24020 KB n=500
59 Correct 16 ms 24332 KB n=2000
60 Correct 15 ms 24412 KB n=2000
61 Correct 17 ms 24412 KB n=2000
62 Correct 16 ms 24404 KB n=2000
63 Correct 15 ms 24284 KB n=2000
64 Correct 31 ms 24408 KB n=2000
65 Correct 16 ms 24328 KB n=2000
66 Correct 16 ms 24448 KB n=2000
67 Correct 23 ms 24280 KB n=2000
68 Correct 16 ms 24324 KB n=2000
69 Correct 15 ms 24360 KB n=2000
70 Correct 14 ms 24276 KB n=2000
71 Correct 30 ms 24272 KB n=2000
72 Correct 20 ms 24356 KB n=2000
73 Correct 16 ms 24276 KB n=2000
74 Correct 15 ms 24276 KB n=1844
75 Correct 15 ms 24280 KB n=2000
76 Correct 16 ms 24276 KB n=2000
77 Correct 16 ms 24340 KB n=2000
78 Correct 16 ms 24276 KB n=2000
79 Correct 15 ms 24276 KB n=2000
80 Correct 17 ms 24404 KB n=2000
81 Correct 19 ms 24404 KB n=2000
82 Correct 15 ms 24276 KB n=2000
83 Correct 15 ms 24372 KB n=2000
84 Correct 26 ms 24284 KB n=2000
85 Correct 16 ms 24404 KB n=2000
86 Correct 23 ms 24376 KB n=2000
87 Correct 17 ms 24268 KB n=2000
88 Correct 16 ms 24416 KB n=2000
89 Correct 16 ms 24416 KB n=2000
90 Correct 16 ms 24448 KB n=2000
91 Correct 16 ms 24280 KB n=2000
92 Correct 919 ms 68884 KB n=200000
93 Correct 1084 ms 72804 KB n=200000
94 Correct 959 ms 76128 KB n=200000
95 Correct 875 ms 68844 KB n=200000
96 Correct 886 ms 68968 KB n=200000
97 Correct 1107 ms 71864 KB n=200000
98 Correct 861 ms 69068 KB n=200000
99 Correct 1092 ms 68484 KB n=200000
100 Correct 930 ms 68976 KB n=200000
101 Correct 940 ms 77592 KB n=200000
102 Correct 514 ms 70240 KB n=200000
103 Correct 441 ms 70136 KB n=200000
104 Correct 504 ms 70056 KB n=200000
105 Correct 476 ms 69744 KB n=200000
106 Correct 454 ms 69836 KB n=200000
107 Correct 445 ms 69524 KB n=200000
108 Correct 886 ms 68336 KB n=200000
109 Correct 931 ms 67920 KB n=200000
110 Correct 885 ms 67844 KB n=200000
111 Correct 799 ms 68292 KB n=200000
112 Correct 837 ms 75672 KB n=200000
113 Correct 960 ms 71260 KB n=200000
114 Correct 783 ms 68280 KB n=200000
115 Correct 1077 ms 69036 KB n=200000
116 Correct 717 ms 68096 KB n=200000
117 Correct 822 ms 76168 KB n=200000
118 Correct 973 ms 70172 KB n=200000
119 Correct 759 ms 68120 KB n=200000
120 Correct 777 ms 76116 KB n=200000
121 Correct 815 ms 76076 KB n=200000
122 Correct 764 ms 76444 KB n=200000
123 Correct 447 ms 68168 KB n=200000
124 Correct 195 ms 36980 KB n=25264