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Submission #343514

# Submission time Handle Problem Language Result Execution time Memory
343514 2021-01-04T06:36:59 Z Rakhmand Birthday gift (IZhO18_treearray) C++14
100 / 100
 1730 ms 80216 KB 
#include <cstring>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <queue>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cassert>
#include <iterator>

using namespace std;

#define ios ios_base::sync_with_stdio(0), cout.tie(0), cin.tie(0);
#define S second
#define F first
#define pb push_back
#define nl '\n'
#define NL cout << '\n';
#define EX exit(0)
#define all(s) s.begin(), s.end()
#define no_answer {cout << "NO"; exit(0);}
#define FOR(i, start, finish, k) for(llong i = start; i <= finish; i += k)

const long long mxn = 2e5 + 110;
const long long mnn = 1e3 + 2;
const long long mod = 1e9 + 7;
const long long inf = 1e18;
const long long OO = 1e9;

typedef long long llong;
typedef unsigned long long ullong;

int n, m, q, d[mxn][20], lvl[mxn], a[mxn], ans[mxn];
vector<int> g[mxn];
set<int> st[mxn], stpos[mxn];

void dfs(int x, int p){
    lvl[x] = lvl[p] + 1;
    d[x][0] = p;
    for(int i = 1; i <= 18; i++){
        d[x][i] = d[d[x][i - 1]][i - 1];
    }
    for(auto to : g[x]){
        if(to != p)
            dfs(to, x);
    }
}

int lca(int u, int v){
    if(lvl[u] < lvl[v]){
        swap(u, v);
    }
    int dif = lvl[u] - lvl[v];
    for(int j = 0; j <= 18; j++){
        if((1 << j) & dif){
            u = d[u][j];
        }
    }
    if(u == v) return u;
    for(int i = 18; i >= 0; i--){
        if(d[u][i] != d[v][i]){
            u = d[u][i];
            v = d[v][i];
        }
    }
    return d[u][0];
}

void replace_pair(int pos, int type, int x){
    int anc = lca(a[pos], a[pos + type]);
    st[anc].erase(min(pos + type, pos));
    anc = lca(a[pos + type], x);
    st[anc].insert(min(pos + type, pos));
}

int main() {
    cin >> n >> m >> q;
    for(int i = 1; i < n; i++){
        int u, v;
        cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    dfs(1, 0);
    for(int i = 1; i <= m; i++){
        cin >> a[i];
    }
    for(int i = 1; i <= m; i++){
        stpos[a[i]].insert(i);
        if(i != m){
            int u = i, v = i + 1;
            int anc = lca(a[u], a[v]);
            st[anc].insert(u);
        }
    }
    for(int i = 1; i <= q; i++){
        int t;
        cin >> t;
        if(t == 1){
            int pos, b;
            cin >> pos >> b;
            if(pos != 1){
                replace_pair(pos, -1, b);
            }
            if(pos != m){
                replace_pair(pos, 1, b);
            }
            stpos[a[pos]].erase(pos);
            stpos[b].insert(pos);
            a[pos] = b;
        }else{
            int l, r, b;
            cin >> l >> r >> b;
            set<int> :: iterator it = stpos[b].lower_bound(l);
            if(it != stpos[b].end() && l <= *it && *it <= r){
                cout << *it << ' ' << *it << nl;
                continue;
            }
            it = st[b].lower_bound(l);
            if(it == st[b].end()) {
                cout << -1 << ' ' << -1 << nl;
                continue;
            }
            if(*it < l){
                it++;
            }
            if(it == st[b].end()){
                cout << -1 << ' ' << -1 << nl;
                continue;
            }
            if(l <= *it && *it + 1 <= r){
                cout << *it << ' ' << *it + 1 << nl;
            }else{
                cout << -1 << ' ' << -1 << nl;
            }
        }
    }
}

/*
 5 4 4
 1 2
 3 1
 4 3
 5 3
 4 5 2 3
 2 1 3 1
 1 3 5
 2 3 4 5
 2 1 3 1
*/

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23788 KB n=5
2 Correct 15 ms 23916 KB n=100
3 Correct 15 ms 23916 KB n=100
4 Correct 15 ms 23936 KB n=100
5 Correct 14 ms 23916 KB n=100
6 Correct 15 ms 23916 KB n=100
7 Correct 15 ms 23916 KB n=100
8 Correct 15 ms 23916 KB n=100
9 Correct 15 ms 23916 KB n=100
10 Correct 14 ms 23916 KB n=100
11 Correct 14 ms 23916 KB n=100
12 Correct 15 ms 23916 KB n=100
13 Correct 14 ms 23916 KB n=100
14 Correct 15 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 15 ms 23916 KB n=100
17 Correct 14 ms 24044 KB n=100
18 Correct 15 ms 23916 KB n=100
19 Correct 15 ms 23916 KB n=100
20 Correct 16 ms 23916 KB n=100
21 Correct 14 ms 23916 KB n=100
22 Correct 14 ms 23916 KB n=100
23 Correct 15 ms 23916 KB n=100
24 Correct 14 ms 23916 KB n=100
25 Correct 14 ms 23916 KB n=100
26 Correct 14 ms 23788 KB n=12
27 Correct 15 ms 23916 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23788 KB n=5
2 Correct 15 ms 23916 KB n=100
3 Correct 15 ms 23916 KB n=100
4 Correct 15 ms 23936 KB n=100
5 Correct 14 ms 23916 KB n=100
6 Correct 15 ms 23916 KB n=100
7 Correct 15 ms 23916 KB n=100
8 Correct 15 ms 23916 KB n=100
9 Correct 15 ms 23916 KB n=100
10 Correct 14 ms 23916 KB n=100
11 Correct 14 ms 23916 KB n=100
12 Correct 15 ms 23916 KB n=100
13 Correct 14 ms 23916 KB n=100
14 Correct 15 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 15 ms 23916 KB n=100
17 Correct 14 ms 24044 KB n=100
18 Correct 15 ms 23916 KB n=100
19 Correct 15 ms 23916 KB n=100
20 Correct 16 ms 23916 KB n=100
21 Correct 14 ms 23916 KB n=100
22 Correct 14 ms 23916 KB n=100
23 Correct 15 ms 23916 KB n=100
24 Correct 14 ms 23916 KB n=100
25 Correct 14 ms 23916 KB n=100
26 Correct 14 ms 23788 KB n=12
27 Correct 15 ms 23916 KB n=100
28 Correct 16 ms 23916 KB n=500
29 Correct 16 ms 23916 KB n=500
30 Correct 17 ms 23916 KB n=500
31 Correct 16 ms 23916 KB n=500
32 Correct 16 ms 23916 KB n=500
33 Correct 19 ms 23916 KB n=500
34 Correct 18 ms 24048 KB n=500
35 Correct 16 ms 23916 KB n=500
36 Correct 17 ms 23916 KB n=500
37 Correct 16 ms 23916 KB n=500
38 Correct 17 ms 23916 KB n=500
39 Correct 16 ms 23916 KB n=500
40 Correct 16 ms 23916 KB n=500
41 Correct 16 ms 23936 KB n=500
42 Correct 16 ms 23928 KB n=500
43 Correct 17 ms 23916 KB n=500
44 Correct 16 ms 23916 KB n=500
45 Correct 16 ms 23916 KB n=500
46 Correct 17 ms 23916 KB n=500
47 Correct 16 ms 23916 KB n=500
48 Correct 16 ms 23916 KB n=500
49 Correct 16 ms 23916 KB n=500
50 Correct 16 ms 23916 KB n=500
51 Correct 16 ms 23916 KB n=500
52 Correct 17 ms 23916 KB n=500
53 Correct 16 ms 23916 KB n=500
54 Correct 16 ms 23916 KB n=500
55 Correct 15 ms 23916 KB n=278
56 Correct 16 ms 23916 KB n=500
57 Correct 17 ms 23916 KB n=500
58 Correct 17 ms 23936 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23788 KB n=5
2 Correct 15 ms 23916 KB n=100
3 Correct 15 ms 23916 KB n=100
4 Correct 15 ms 23936 KB n=100
5 Correct 14 ms 23916 KB n=100
6 Correct 15 ms 23916 KB n=100
7 Correct 15 ms 23916 KB n=100
8 Correct 15 ms 23916 KB n=100
9 Correct 15 ms 23916 KB n=100
10 Correct 14 ms 23916 KB n=100
11 Correct 14 ms 23916 KB n=100
12 Correct 15 ms 23916 KB n=100
13 Correct 14 ms 23916 KB n=100
14 Correct 15 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 15 ms 23916 KB n=100
17 Correct 14 ms 24044 KB n=100
18 Correct 15 ms 23916 KB n=100
19 Correct 15 ms 23916 KB n=100
20 Correct 16 ms 23916 KB n=100
21 Correct 14 ms 23916 KB n=100
22 Correct 14 ms 23916 KB n=100
23 Correct 15 ms 23916 KB n=100
24 Correct 14 ms 23916 KB n=100
25 Correct 14 ms 23916 KB n=100
26 Correct 14 ms 23788 KB n=12
27 Correct 15 ms 23916 KB n=100
28 Correct 16 ms 23916 KB n=500
29 Correct 16 ms 23916 KB n=500
30 Correct 17 ms 23916 KB n=500
31 Correct 16 ms 23916 KB n=500
32 Correct 16 ms 23916 KB n=500
33 Correct 19 ms 23916 KB n=500
34 Correct 18 ms 24048 KB n=500
35 Correct 16 ms 23916 KB n=500
36 Correct 17 ms 23916 KB n=500
37 Correct 16 ms 23916 KB n=500
38 Correct 17 ms 23916 KB n=500
39 Correct 16 ms 23916 KB n=500
40 Correct 16 ms 23916 KB n=500
41 Correct 16 ms 23936 KB n=500
42 Correct 16 ms 23928 KB n=500
43 Correct 17 ms 23916 KB n=500
44 Correct 16 ms 23916 KB n=500
45 Correct 16 ms 23916 KB n=500
46 Correct 17 ms 23916 KB n=500
47 Correct 16 ms 23916 KB n=500
48 Correct 16 ms 23916 KB n=500
49 Correct 16 ms 23916 KB n=500
50 Correct 16 ms 23916 KB n=500
51 Correct 16 ms 23916 KB n=500
52 Correct 17 ms 23916 KB n=500
53 Correct 16 ms 23916 KB n=500
54 Correct 16 ms 23916 KB n=500
55 Correct 15 ms 23916 KB n=278
56 Correct 16 ms 23916 KB n=500
57 Correct 17 ms 23916 KB n=500
58 Correct 17 ms 23936 KB n=500
59 Correct 22 ms 24300 KB n=2000
60 Correct 22 ms 24300 KB n=2000
61 Correct 22 ms 24300 KB n=2000
62 Correct 23 ms 24300 KB n=2000
63 Correct 22 ms 24300 KB n=2000
64 Correct 24 ms 24300 KB n=2000
65 Correct 22 ms 24300 KB n=2000
66 Correct 22 ms 24300 KB n=2000
67 Correct 23 ms 24300 KB n=2000
68 Correct 22 ms 24320 KB n=2000
69 Correct 23 ms 24300 KB n=2000
70 Correct 23 ms 24300 KB n=2000
71 Correct 24 ms 24300 KB n=2000
72 Correct 24 ms 24300 KB n=2000
73 Correct 23 ms 24300 KB n=2000
74 Correct 21 ms 24300 KB n=1844
75 Correct 23 ms 24300 KB n=2000
76 Correct 23 ms 24300 KB n=2000
77 Correct 22 ms 24300 KB n=2000
78 Correct 23 ms 24300 KB n=2000
79 Correct 22 ms 24300 KB n=2000
80 Correct 22 ms 24300 KB n=2000
81 Correct 22 ms 24300 KB n=2000
82 Correct 24 ms 24428 KB n=2000
83 Correct 22 ms 24300 KB n=2000
84 Correct 22 ms 24300 KB n=2000
85 Correct 22 ms 24300 KB n=2000
86 Correct 23 ms 24300 KB n=2000
87 Correct 22 ms 24428 KB n=2000
88 Correct 22 ms 24300 KB n=2000
89 Correct 22 ms 24428 KB n=2000
90 Correct 22 ms 24448 KB n=2000
91 Correct 24 ms 24300 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23788 KB n=5
2 Correct 15 ms 23916 KB n=100
3 Correct 15 ms 23916 KB n=100
4 Correct 15 ms 23936 KB n=100
5 Correct 14 ms 23916 KB n=100
6 Correct 15 ms 23916 KB n=100
7 Correct 15 ms 23916 KB n=100
8 Correct 15 ms 23916 KB n=100
9 Correct 15 ms 23916 KB n=100
10 Correct 14 ms 23916 KB n=100
11 Correct 14 ms 23916 KB n=100
12 Correct 15 ms 23916 KB n=100
13 Correct 14 ms 23916 KB n=100
14 Correct 15 ms 23916 KB n=100
15 Correct 17 ms 23916 KB n=100
16 Correct 15 ms 23916 KB n=100
17 Correct 14 ms 24044 KB n=100
18 Correct 15 ms 23916 KB n=100
19 Correct 15 ms 23916 KB n=100
20 Correct 16 ms 23916 KB n=100
21 Correct 14 ms 23916 KB n=100
22 Correct 14 ms 23916 KB n=100
23 Correct 15 ms 23916 KB n=100
24 Correct 14 ms 23916 KB n=100
25 Correct 14 ms 23916 KB n=100
26 Correct 14 ms 23788 KB n=12
27 Correct 15 ms 23916 KB n=100
28 Correct 16 ms 23916 KB n=500
29 Correct 16 ms 23916 KB n=500
30 Correct 17 ms 23916 KB n=500
31 Correct 16 ms 23916 KB n=500
32 Correct 16 ms 23916 KB n=500
33 Correct 19 ms 23916 KB n=500
34 Correct 18 ms 24048 KB n=500
35 Correct 16 ms 23916 KB n=500
36 Correct 17 ms 23916 KB n=500
37 Correct 16 ms 23916 KB n=500
38 Correct 17 ms 23916 KB n=500
39 Correct 16 ms 23916 KB n=500
40 Correct 16 ms 23916 KB n=500
41 Correct 16 ms 23936 KB n=500
42 Correct 16 ms 23928 KB n=500
43 Correct 17 ms 23916 KB n=500
44 Correct 16 ms 23916 KB n=500
45 Correct 16 ms 23916 KB n=500
46 Correct 17 ms 23916 KB n=500
47 Correct 16 ms 23916 KB n=500
48 Correct 16 ms 23916 KB n=500
49 Correct 16 ms 23916 KB n=500
50 Correct 16 ms 23916 KB n=500
51 Correct 16 ms 23916 KB n=500
52 Correct 17 ms 23916 KB n=500
53 Correct 16 ms 23916 KB n=500
54 Correct 16 ms 23916 KB n=500
55 Correct 15 ms 23916 KB n=278
56 Correct 16 ms 23916 KB n=500
57 Correct 17 ms 23916 KB n=500
58 Correct 17 ms 23936 KB n=500
59 Correct 22 ms 24300 KB n=2000
60 Correct 22 ms 24300 KB n=2000
61 Correct 22 ms 24300 KB n=2000
62 Correct 23 ms 24300 KB n=2000
63 Correct 22 ms 24300 KB n=2000
64 Correct 24 ms 24300 KB n=2000
65 Correct 22 ms 24300 KB n=2000
66 Correct 22 ms 24300 KB n=2000
67 Correct 23 ms 24300 KB n=2000
68 Correct 22 ms 24320 KB n=2000
69 Correct 23 ms 24300 KB n=2000
70 Correct 23 ms 24300 KB n=2000
71 Correct 24 ms 24300 KB n=2000
72 Correct 24 ms 24300 KB n=2000
73 Correct 23 ms 24300 KB n=2000
74 Correct 21 ms 24300 KB n=1844
75 Correct 23 ms 24300 KB n=2000
76 Correct 23 ms 24300 KB n=2000
77 Correct 22 ms 24300 KB n=2000
78 Correct 23 ms 24300 KB n=2000
79 Correct 22 ms 24300 KB n=2000
80 Correct 22 ms 24300 KB n=2000
81 Correct 22 ms 24300 KB n=2000
82 Correct 24 ms 24428 KB n=2000
83 Correct 22 ms 24300 KB n=2000
84 Correct 22 ms 24300 KB n=2000
85 Correct 22 ms 24300 KB n=2000
86 Correct 23 ms 24300 KB n=2000
87 Correct 22 ms 24428 KB n=2000
88 Correct 22 ms 24300 KB n=2000
89 Correct 22 ms 24428 KB n=2000
90 Correct 22 ms 24448 KB n=2000
91 Correct 24 ms 24300 KB n=2000
92 Correct 1345 ms 71876 KB n=200000
93 Correct 1622 ms 75372 KB n=200000
94 Correct 1584 ms 78828 KB n=200000
95 Correct 1301 ms 71904 KB n=200000
96 Correct 1252 ms 71516 KB n=200000
97 Correct 1646 ms 74604 KB n=200000
98 Correct 1298 ms 71520 KB n=200000
99 Correct 1542 ms 71008 KB n=200000
100 Correct 1299 ms 71652 KB n=200000
101 Correct 1554 ms 79840 KB n=200000
102 Correct 1193 ms 72684 KB n=200000
103 Correct 1187 ms 72556 KB n=200000
104 Correct 1188 ms 72556 KB n=200000
105 Correct 1216 ms 72140 KB n=200000
106 Correct 1228 ms 72312 KB n=200000
107 Correct 1219 ms 72196 KB n=200000
108 Correct 1415 ms 71276 KB n=200000
109 Correct 1404 ms 71320 KB n=200000
110 Correct 1432 ms 71376 KB n=200000
111 Correct 1305 ms 71776 KB n=200000
112 Correct 1574 ms 79140 KB n=200000
113 Correct 1619 ms 74476 KB n=200000
114 Correct 1302 ms 71724 KB n=200000
115 Correct 1730 ms 72684 KB n=200000
116 Correct 1264 ms 70752 KB n=200000
117 Correct 1542 ms 79596 KB n=200000
118 Correct 1658 ms 73360 KB n=200000
119 Correct 1249 ms 71520 KB n=200000
120 Correct 1473 ms 79724 KB n=200000
121 Correct 1483 ms 79980 KB n=200000
122 Correct 1480 ms 80216 KB n=200000
123 Correct 1241 ms 71788 KB n=200000
124 Correct 414 ms 38892 KB n=25264