oj.uz

Submission #245650

# Submission time Handle Problem Language Result Execution time Memory
245650 2020-07-07T03:29:16 Z Mercenary Birthday gift (IZhO18_treearray) C++14
100 / 100
 1450 ms 82644 KB 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/trie_policy.hpp>

#define pb push_back
#define mp make_pair
#define taskname "A"

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef pair<int,int> ii;
typedef tree <int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;

const int maxn = 2e5 + 5;
const int mod = 1e9 + 7;
const int logn = log2(maxn) + 1;

int n , m , q;
vector<int> adj[maxn];
int a[maxn];
int P[maxn][logn] , dep[maxn];
void dfs(int u , int par){
    for(auto c : adj[u]){
        if(c == par)continue;
        dep[c] = dep[u] + 1;
        P[c][0] = u;
        for(int i = 1 ; i < logn ; ++i)P[c][i] = P[P[c][i - 1]][i - 1];
        dfs(c , u);
    }
}

int lca(int u , int v){
    if(dep[u] < dep[v])swap(u ,v);
    for(int i = 0 ; i < logn ; ++i)if((dep[u] - dep[v]) & (1 << i))u = P[u][i];
    if(u == v)return u;
    for(int i = logn - 1 ; i >= 0 ; --i){
        if(P[u][i] != P[v][i]){
            u = P[u][i];
            v = P[v][i];
        }
    }
    return P[u][0];
}
set<int> s[maxn] , s1[maxn];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if(fopen(taskname".INP","r")){
		freopen(taskname".INP", "r",stdin);
		freopen(taskname".OUT", "w",stdout);
    }
    cin >> n >> m >> q;
    for(int i = 1 ; i < n ; ++i){
        int u , v;cin >> u >> v;
        adj[u].pb(v);adj[v].pb(u);
    }
    for(int i = 1 ; i <= m ; ++i)cin >> a[i];
    dfs(1 , 0);
    for(int i = 1 ; i < m ; ++i){
        s1[lca(a[i] , a[i + 1])].insert(i);
    }
    for(int i = 1 ; i <= m ; ++i){
        s[a[i]].insert(i);
    }
    while(q--){
        int type;cin >> type;
        if(type == 1){
            int i , v;cin >> i >> v;
            if(a[i] == v)continue;
            s[a[i]].erase(i);
            if(i > 1)s1[lca(a[i],a[i - 1])].erase(i - 1);
            if(i + 1 <= m)s1[lca(a[i] , a[i + 1])].erase(i);
            a[i] = v;
            s[a[i]].insert(i);
            if(i > 1)s1[lca(a[i],a[i - 1])].insert(i - 1);
            if(i + 1 <= m)s1[lca(a[i] , a[i + 1])].insert(i);
        }else{
            int l , r  , v;cin >> l >> r >> v;
            auto it = s[v].lower_bound(l);
            if(it == s[v].end() || *it > r){
                auto it1 = s1[v].lower_bound(l);
                if(it1 == s1[v].end() || *it1 + 1 > r){
                    cout << -1 << " " << -1 << '\n';
                }else{
                    cout << *it1 << " " << *it1 + 1 << '\n';
                }
            }else{
                cout << *it << " " << *it << '\n';
            }
        }
    }
}

Compilation message

treearray.cpp: In function 'int main()':
treearray.cpp:54:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".INP", "r",stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
treearray.cpp:55:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".OUT", "w",stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23808 KB n=5
2 Correct 19 ms 23808 KB n=100
3 Correct 19 ms 23936 KB n=100
4 Correct 18 ms 23936 KB n=100
5 Correct 18 ms 23936 KB n=100
6 Correct 18 ms 23808 KB n=100
7 Correct 18 ms 23808 KB n=100
8 Correct 21 ms 23808 KB n=100
9 Correct 21 ms 23808 KB n=100
10 Correct 18 ms 23936 KB n=100
11 Correct 18 ms 23808 KB n=100
12 Correct 18 ms 23808 KB n=100
13 Correct 19 ms 23808 KB n=100
14 Correct 18 ms 23808 KB n=100
15 Correct 18 ms 23808 KB n=100
16 Correct 18 ms 23808 KB n=100
17 Correct 20 ms 23808 KB n=100
18 Correct 18 ms 23808 KB n=100
19 Correct 18 ms 23808 KB n=100
20 Correct 18 ms 23808 KB n=100
21 Correct 18 ms 23936 KB n=100
22 Correct 18 ms 23808 KB n=100
23 Correct 18 ms 23832 KB n=100
24 Correct 18 ms 23808 KB n=100
25 Correct 19 ms 23808 KB n=100
26 Correct 18 ms 23808 KB n=12
27 Correct 18 ms 23936 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23808 KB n=5
2 Correct 19 ms 23808 KB n=100
3 Correct 19 ms 23936 KB n=100
4 Correct 18 ms 23936 KB n=100
5 Correct 18 ms 23936 KB n=100
6 Correct 18 ms 23808 KB n=100
7 Correct 18 ms 23808 KB n=100
8 Correct 21 ms 23808 KB n=100
9 Correct 21 ms 23808 KB n=100
10 Correct 18 ms 23936 KB n=100
11 Correct 18 ms 23808 KB n=100
12 Correct 18 ms 23808 KB n=100
13 Correct 19 ms 23808 KB n=100
14 Correct 18 ms 23808 KB n=100
15 Correct 18 ms 23808 KB n=100
16 Correct 18 ms 23808 KB n=100
17 Correct 20 ms 23808 KB n=100
18 Correct 18 ms 23808 KB n=100
19 Correct 18 ms 23808 KB n=100
20 Correct 18 ms 23808 KB n=100
21 Correct 18 ms 23936 KB n=100
22 Correct 18 ms 23808 KB n=100
23 Correct 18 ms 23832 KB n=100
24 Correct 18 ms 23808 KB n=100
25 Correct 19 ms 23808 KB n=100
26 Correct 18 ms 23808 KB n=12
27 Correct 18 ms 23936 KB n=100
28 Correct 19 ms 23936 KB n=500
29 Correct 19 ms 23936 KB n=500
30 Correct 20 ms 23936 KB n=500
31 Correct 21 ms 23936 KB n=500
32 Correct 21 ms 23936 KB n=500
33 Correct 19 ms 23936 KB n=500
34 Correct 19 ms 23936 KB n=500
35 Correct 19 ms 23936 KB n=500
36 Correct 19 ms 23936 KB n=500
37 Correct 19 ms 23936 KB n=500
38 Correct 22 ms 23936 KB n=500
39 Correct 19 ms 23936 KB n=500
40 Correct 18 ms 23936 KB n=500
41 Correct 19 ms 23936 KB n=500
42 Correct 19 ms 23936 KB n=500
43 Correct 19 ms 23936 KB n=500
44 Correct 21 ms 24064 KB n=500
45 Correct 19 ms 23936 KB n=500
46 Correct 19 ms 23936 KB n=500
47 Correct 19 ms 24064 KB n=500
48 Correct 19 ms 23936 KB n=500
49 Correct 19 ms 24064 KB n=500
50 Correct 19 ms 23936 KB n=500
51 Correct 19 ms 24064 KB n=500
52 Correct 22 ms 23936 KB n=500
53 Correct 19 ms 23936 KB n=500
54 Correct 19 ms 23936 KB n=500
55 Correct 18 ms 23936 KB n=278
56 Correct 21 ms 24064 KB n=500
57 Correct 18 ms 23936 KB n=500
58 Correct 21 ms 23936 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23808 KB n=5
2 Correct 19 ms 23808 KB n=100
3 Correct 19 ms 23936 KB n=100
4 Correct 18 ms 23936 KB n=100
5 Correct 18 ms 23936 KB n=100
6 Correct 18 ms 23808 KB n=100
7 Correct 18 ms 23808 KB n=100
8 Correct 21 ms 23808 KB n=100
9 Correct 21 ms 23808 KB n=100
10 Correct 18 ms 23936 KB n=100
11 Correct 18 ms 23808 KB n=100
12 Correct 18 ms 23808 KB n=100
13 Correct 19 ms 23808 KB n=100
14 Correct 18 ms 23808 KB n=100
15 Correct 18 ms 23808 KB n=100
16 Correct 18 ms 23808 KB n=100
17 Correct 20 ms 23808 KB n=100
18 Correct 18 ms 23808 KB n=100
19 Correct 18 ms 23808 KB n=100
20 Correct 18 ms 23808 KB n=100
21 Correct 18 ms 23936 KB n=100
22 Correct 18 ms 23808 KB n=100
23 Correct 18 ms 23832 KB n=100
24 Correct 18 ms 23808 KB n=100
25 Correct 19 ms 23808 KB n=100
26 Correct 18 ms 23808 KB n=12
27 Correct 18 ms 23936 KB n=100
28 Correct 19 ms 23936 KB n=500
29 Correct 19 ms 23936 KB n=500
30 Correct 20 ms 23936 KB n=500
31 Correct 21 ms 23936 KB n=500
32 Correct 21 ms 23936 KB n=500
33 Correct 19 ms 23936 KB n=500
34 Correct 19 ms 23936 KB n=500
35 Correct 19 ms 23936 KB n=500
36 Correct 19 ms 23936 KB n=500
37 Correct 19 ms 23936 KB n=500
38 Correct 22 ms 23936 KB n=500
39 Correct 19 ms 23936 KB n=500
40 Correct 18 ms 23936 KB n=500
41 Correct 19 ms 23936 KB n=500
42 Correct 19 ms 23936 KB n=500
43 Correct 19 ms 23936 KB n=500
44 Correct 21 ms 24064 KB n=500
45 Correct 19 ms 23936 KB n=500
46 Correct 19 ms 23936 KB n=500
47 Correct 19 ms 24064 KB n=500
48 Correct 19 ms 23936 KB n=500
49 Correct 19 ms 24064 KB n=500
50 Correct 19 ms 23936 KB n=500
51 Correct 19 ms 24064 KB n=500
52 Correct 22 ms 23936 KB n=500
53 Correct 19 ms 23936 KB n=500
54 Correct 19 ms 23936 KB n=500
55 Correct 18 ms 23936 KB n=278
56 Correct 21 ms 24064 KB n=500
57 Correct 18 ms 23936 KB n=500
58 Correct 21 ms 23936 KB n=500
59 Correct 24 ms 24320 KB n=2000
60 Correct 22 ms 24448 KB n=2000
61 Correct 22 ms 24448 KB n=2000
62 Correct 22 ms 24320 KB n=2000
63 Correct 22 ms 24320 KB n=2000
64 Correct 22 ms 24448 KB n=2000
65 Correct 22 ms 24320 KB n=2000
66 Correct 24 ms 24320 KB n=2000
67 Correct 22 ms 24320 KB n=2000
68 Correct 21 ms 24320 KB n=2000
69 Correct 22 ms 24320 KB n=2000
70 Correct 21 ms 24320 KB n=2000
71 Correct 26 ms 24320 KB n=2000
72 Correct 20 ms 24296 KB n=2000
73 Correct 24 ms 24320 KB n=2000
74 Correct 21 ms 24320 KB n=1844
75 Correct 24 ms 24296 KB n=2000
76 Correct 22 ms 24320 KB n=2000
77 Correct 26 ms 24312 KB n=2000
78 Correct 21 ms 24320 KB n=2000
79 Correct 26 ms 24320 KB n=2000
80 Correct 22 ms 24320 KB n=2000
81 Correct 26 ms 24448 KB n=2000
82 Correct 21 ms 24320 KB n=2000
83 Correct 22 ms 24448 KB n=2000
84 Correct 21 ms 24448 KB n=2000
85 Correct 29 ms 24320 KB n=2000
86 Correct 22 ms 24448 KB n=2000
87 Correct 22 ms 24320 KB n=2000
88 Correct 25 ms 24448 KB n=2000
89 Correct 22 ms 24448 KB n=2000
90 Correct 21 ms 24448 KB n=2000
91 Correct 21 ms 24320 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23808 KB n=5
2 Correct 19 ms 23808 KB n=100
3 Correct 19 ms 23936 KB n=100
4 Correct 18 ms 23936 KB n=100
5 Correct 18 ms 23936 KB n=100
6 Correct 18 ms 23808 KB n=100
7 Correct 18 ms 23808 KB n=100
8 Correct 21 ms 23808 KB n=100
9 Correct 21 ms 23808 KB n=100
10 Correct 18 ms 23936 KB n=100
11 Correct 18 ms 23808 KB n=100
12 Correct 18 ms 23808 KB n=100
13 Correct 19 ms 23808 KB n=100
14 Correct 18 ms 23808 KB n=100
15 Correct 18 ms 23808 KB n=100
16 Correct 18 ms 23808 KB n=100
17 Correct 20 ms 23808 KB n=100
18 Correct 18 ms 23808 KB n=100
19 Correct 18 ms 23808 KB n=100
20 Correct 18 ms 23808 KB n=100
21 Correct 18 ms 23936 KB n=100
22 Correct 18 ms 23808 KB n=100
23 Correct 18 ms 23832 KB n=100
24 Correct 18 ms 23808 KB n=100
25 Correct 19 ms 23808 KB n=100
26 Correct 18 ms 23808 KB n=12
27 Correct 18 ms 23936 KB n=100
28 Correct 19 ms 23936 KB n=500
29 Correct 19 ms 23936 KB n=500
30 Correct 20 ms 23936 KB n=500
31 Correct 21 ms 23936 KB n=500
32 Correct 21 ms 23936 KB n=500
33 Correct 19 ms 23936 KB n=500
34 Correct 19 ms 23936 KB n=500
35 Correct 19 ms 23936 KB n=500
36 Correct 19 ms 23936 KB n=500
37 Correct 19 ms 23936 KB n=500
38 Correct 22 ms 23936 KB n=500
39 Correct 19 ms 23936 KB n=500
40 Correct 18 ms 23936 KB n=500
41 Correct 19 ms 23936 KB n=500
42 Correct 19 ms 23936 KB n=500
43 Correct 19 ms 23936 KB n=500
44 Correct 21 ms 24064 KB n=500
45 Correct 19 ms 23936 KB n=500
46 Correct 19 ms 23936 KB n=500
47 Correct 19 ms 24064 KB n=500
48 Correct 19 ms 23936 KB n=500
49 Correct 19 ms 24064 KB n=500
50 Correct 19 ms 23936 KB n=500
51 Correct 19 ms 24064 KB n=500
52 Correct 22 ms 23936 KB n=500
53 Correct 19 ms 23936 KB n=500
54 Correct 19 ms 23936 KB n=500
55 Correct 18 ms 23936 KB n=278
56 Correct 21 ms 24064 KB n=500
57 Correct 18 ms 23936 KB n=500
58 Correct 21 ms 23936 KB n=500
59 Correct 24 ms 24320 KB n=2000
60 Correct 22 ms 24448 KB n=2000
61 Correct 22 ms 24448 KB n=2000
62 Correct 22 ms 24320 KB n=2000
63 Correct 22 ms 24320 KB n=2000
64 Correct 22 ms 24448 KB n=2000
65 Correct 22 ms 24320 KB n=2000
66 Correct 24 ms 24320 KB n=2000
67 Correct 22 ms 24320 KB n=2000
68 Correct 21 ms 24320 KB n=2000
69 Correct 22 ms 24320 KB n=2000
70 Correct 21 ms 24320 KB n=2000
71 Correct 26 ms 24320 KB n=2000
72 Correct 20 ms 24296 KB n=2000
73 Correct 24 ms 24320 KB n=2000
74 Correct 21 ms 24320 KB n=1844
75 Correct 24 ms 24296 KB n=2000
76 Correct 22 ms 24320 KB n=2000
77 Correct 26 ms 24312 KB n=2000
78 Correct 21 ms 24320 KB n=2000
79 Correct 26 ms 24320 KB n=2000
80 Correct 22 ms 24320 KB n=2000
81 Correct 26 ms 24448 KB n=2000
82 Correct 21 ms 24320 KB n=2000
83 Correct 22 ms 24448 KB n=2000
84 Correct 21 ms 24448 KB n=2000
85 Correct 29 ms 24320 KB n=2000
86 Correct 22 ms 24448 KB n=2000
87 Correct 22 ms 24320 KB n=2000
88 Correct 25 ms 24448 KB n=2000
89 Correct 22 ms 24448 KB n=2000
90 Correct 21 ms 24448 KB n=2000
91 Correct 21 ms 24320 KB n=2000
92 Correct 861 ms 73176 KB n=200000
93 Correct 1306 ms 78200 KB n=200000
94 Correct 1450 ms 81400 KB n=200000
95 Correct 950 ms 73004 KB n=200000
96 Correct 902 ms 73196 KB n=200000
97 Correct 1326 ms 77176 KB n=200000
98 Correct 757 ms 72936 KB n=200000
99 Correct 963 ms 73080 KB n=200000
100 Correct 806 ms 72920 KB n=200000
101 Correct 1235 ms 82644 KB n=200000
102 Correct 538 ms 74120 KB n=200000
103 Correct 508 ms 74104 KB n=200000
104 Correct 470 ms 74104 KB n=200000
105 Correct 534 ms 74488 KB n=200000
106 Correct 475 ms 74488 KB n=200000
107 Correct 486 ms 74492 KB n=200000
108 Correct 977 ms 73208 KB n=200000
109 Correct 954 ms 73012 KB n=200000
110 Correct 1057 ms 73028 KB n=200000
111 Correct 933 ms 72560 KB n=200000
112 Correct 1157 ms 81656 KB n=200000
113 Correct 1281 ms 77176 KB n=200000
114 Correct 871 ms 72552 KB n=200000
115 Correct 1242 ms 75384 KB n=200000
116 Correct 776 ms 73064 KB n=200000
117 Correct 1289 ms 81944 KB n=200000
118 Correct 1187 ms 75952 KB n=200000
119 Correct 794 ms 73064 KB n=200000
120 Correct 1073 ms 81528 KB n=200000
121 Correct 1256 ms 81792 KB n=200000
122 Correct 1079 ms 82048 KB n=200000
123 Correct 549 ms 74396 KB n=200000
124 Correct 243 ms 38520 KB n=25264