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답안 #338544

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
338544 2020-12-23T11:04:14 Z aryan12 Birthday gift (IZhO18_treearray) C++17
100 / 100
 2207 ms 84492 KB 
#include <bits/stdc++.h>
using namespace std;

const long long N = 2e5 + 5;
vector<long long> g[N];
long long DP[18][N], depth[N];

void dfs(long long node, long long par) {
    DP[0][node] = par;
    for(long long i = 0; i < g[node].size(); i++) {
        if(g[node][i] != par) {
            depth[g[node][i]] = depth[node] + 1;
            dfs(g[node][i], node);
        }
    }
}

void DPTable(long long n) {
    for(long long j = 1; j < 18; j++) {
        for(long long i = 1; i <= n; i++) {
            if(DP[j - 1][i] == -1)
                DP[j][i] = -1;
            else
                DP[j][i] = DP[j - 1][DP[j - 1][i]];
        }
    }
}

long long lca(long long a, long long b) {
    if(depth[a] < depth[b])
        swap(a, b);
    long long diff = depth[a] - depth[b];
    for(long long i = 17; i >= 0; i--) {
        if(diff >= (1 << i)) {
            diff -= (1 << i);
            a = DP[i][a];
        }
    }
    if(a == b)
        return a;
    for(long long i = 17; i >= 0; i--) {
        if(DP[i][a] != DP[i][b]) {
            a = DP[i][a];
            b = DP[i][b];
        }
    }
    return DP[0][a];
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    long long n, m, q;
    cin >> n >> m >> q;
    for(long long i = 0; i < n - 1; i++) {
        long long v, u;
        cin >> v >> u;
        g[v].push_back(u);
        g[u].push_back(v);
    }
    depth[1] = 0;
    dfs(1, -1);
    DPTable(n);
    long long a[m + 1];
    for(long long i = 1; i <= m; i++) {
        cin >> a[i];
    }
    set<long long> ones[n + 1], twos[n + 1];
    for(long long i = 1; i < m; i++) {
        ones[a[i]].insert(i);
        twos[lca(a[i], a[i + 1])].insert(i);
    }
    ones[a[m]].insert(m);
    //cout << "121" << endl;
    for(long long i = 1; i <= q; i++) {
        long long command;
        cin >> command;
        if(command == 1) {
            long long idx, val;
            cin >> idx >> val;
            ones[a[idx]].erase(idx);
            if(idx < m) {
                twos[lca(a[idx], a[idx + 1])].erase(idx);
            }
            if(idx > 1) {
                twos[lca(a[idx], a[idx - 1])].erase(idx - 1);
            }
            a[idx] = val;
            ones[a[idx]].insert(idx);
            if(idx < m) {
                twos[lca(a[idx], a[idx + 1])].insert(idx);
            }
            if(idx > 1) {
                twos[lca(a[idx], a[idx - 1])].insert(idx - 1);
            }
        }
        else {
            long long l, r, v;
            cin >> l >> r >> v;
            if(ones[v].size() != 0 && *(ones[v].begin()) <= r) {
                auto temp = ones[v].upper_bound(r);
                temp--;
                long long x = *(temp);
                if(x >= l) {
                    cout << x << " " << x << endl;
                    continue;
                }
            }
            if(twos[v].size() != 0 && *(twos[v].begin()) < r) {
                auto temp = twos[v].lower_bound(r);
                temp--;
                long long x = *(temp);
                if(x >= l && x < r) {
                    cout << x << " " << x + 1 << endl;
                    continue;
                }
            }
            cout << "-1 -1" << endl;
        }
    }
}

Compilation message

treearray.cpp: In function 'void dfs(long long int, long long int)':
treearray.cpp:10:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for(long long i = 0; i < g[node].size(); i++) {
      |                          ~~^~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5100 KB n=5
2 Correct 4 ms 5228 KB n=100
3 Correct 4 ms 5248 KB n=100
4 Correct 5 ms 5228 KB n=100
5 Correct 4 ms 5228 KB n=100
6 Correct 4 ms 5228 KB n=100
7 Correct 4 ms 5228 KB n=100
8 Correct 4 ms 5228 KB n=100
9 Correct 4 ms 5228 KB n=100
10 Correct 4 ms 5228 KB n=100
11 Correct 4 ms 5228 KB n=100
12 Correct 4 ms 5228 KB n=100
13 Correct 5 ms 5228 KB n=100
14 Correct 4 ms 5228 KB n=100
15 Correct 4 ms 5228 KB n=100
16 Correct 4 ms 5228 KB n=100
17 Correct 4 ms 5228 KB n=100
18 Correct 4 ms 5228 KB n=100
19 Correct 4 ms 5228 KB n=100
20 Correct 4 ms 5228 KB n=100
21 Correct 5 ms 5228 KB n=100
22 Correct 4 ms 5228 KB n=100
23 Correct 4 ms 5228 KB n=100
24 Correct 3 ms 5228 KB n=100
25 Correct 4 ms 5228 KB n=100
26 Correct 3 ms 5100 KB n=12
27 Correct 4 ms 5228 KB n=100

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5100 KB n=5
2 Correct 4 ms 5228 KB n=100
3 Correct 4 ms 5248 KB n=100
4 Correct 5 ms 5228 KB n=100
5 Correct 4 ms 5228 KB n=100
6 Correct 4 ms 5228 KB n=100
7 Correct 4 ms 5228 KB n=100
8 Correct 4 ms 5228 KB n=100
9 Correct 4 ms 5228 KB n=100
10 Correct 4 ms 5228 KB n=100
11 Correct 4 ms 5228 KB n=100
12 Correct 4 ms 5228 KB n=100
13 Correct 5 ms 5228 KB n=100
14 Correct 4 ms 5228 KB n=100
15 Correct 4 ms 5228 KB n=100
16 Correct 4 ms 5228 KB n=100
17 Correct 4 ms 5228 KB n=100
18 Correct 4 ms 5228 KB n=100
19 Correct 4 ms 5228 KB n=100
20 Correct 4 ms 5228 KB n=100
21 Correct 5 ms 5228 KB n=100
22 Correct 4 ms 5228 KB n=100
23 Correct 4 ms 5228 KB n=100
24 Correct 3 ms 5228 KB n=100
25 Correct 4 ms 5228 KB n=100
26 Correct 3 ms 5100 KB n=12
27 Correct 4 ms 5228 KB n=100
28 Correct 5 ms 5376 KB n=500
29 Correct 5 ms 5356 KB n=500
30 Correct 5 ms 5356 KB n=500
31 Correct 5 ms 5356 KB n=500
32 Correct 5 ms 5356 KB n=500
33 Correct 5 ms 5376 KB n=500
34 Correct 5 ms 5356 KB n=500
35 Correct 5 ms 5356 KB n=500
36 Correct 5 ms 5356 KB n=500
37 Correct 5 ms 5356 KB n=500
38 Correct 5 ms 5356 KB n=500
39 Correct 5 ms 5356 KB n=500
40 Correct 5 ms 5356 KB n=500
41 Correct 6 ms 5356 KB n=500
42 Correct 5 ms 5356 KB n=500
43 Correct 5 ms 5356 KB n=500
44 Correct 7 ms 5356 KB n=500
45 Correct 5 ms 5356 KB n=500
46 Correct 5 ms 5356 KB n=500
47 Correct 5 ms 5356 KB n=500
48 Correct 5 ms 5356 KB n=500
49 Correct 5 ms 5356 KB n=500
50 Correct 5 ms 5356 KB n=500
51 Correct 5 ms 5356 KB n=500
52 Correct 6 ms 5356 KB n=500
53 Correct 5 ms 5356 KB n=500
54 Correct 5 ms 5356 KB n=500
55 Correct 5 ms 5228 KB n=278
56 Correct 5 ms 5356 KB n=500
57 Correct 5 ms 5356 KB n=500
58 Correct 6 ms 5356 KB n=500

Subtask #3
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5100 KB n=5
2 Correct 4 ms 5228 KB n=100
3 Correct 4 ms 5248 KB n=100
4 Correct 5 ms 5228 KB n=100
5 Correct 4 ms 5228 KB n=100
6 Correct 4 ms 5228 KB n=100
7 Correct 4 ms 5228 KB n=100
8 Correct 4 ms 5228 KB n=100
9 Correct 4 ms 5228 KB n=100
10 Correct 4 ms 5228 KB n=100
11 Correct 4 ms 5228 KB n=100
12 Correct 4 ms 5228 KB n=100
13 Correct 5 ms 5228 KB n=100
14 Correct 4 ms 5228 KB n=100
15 Correct 4 ms 5228 KB n=100
16 Correct 4 ms 5228 KB n=100
17 Correct 4 ms 5228 KB n=100
18 Correct 4 ms 5228 KB n=100
19 Correct 4 ms 5228 KB n=100
20 Correct 4 ms 5228 KB n=100
21 Correct 5 ms 5228 KB n=100
22 Correct 4 ms 5228 KB n=100
23 Correct 4 ms 5228 KB n=100
24 Correct 3 ms 5228 KB n=100
25 Correct 4 ms 5228 KB n=100
26 Correct 3 ms 5100 KB n=12
27 Correct 4 ms 5228 KB n=100
28 Correct 5 ms 5376 KB n=500
29 Correct 5 ms 5356 KB n=500
30 Correct 5 ms 5356 KB n=500
31 Correct 5 ms 5356 KB n=500
32 Correct 5 ms 5356 KB n=500
33 Correct 5 ms 5376 KB n=500
34 Correct 5 ms 5356 KB n=500
35 Correct 5 ms 5356 KB n=500
36 Correct 5 ms 5356 KB n=500
37 Correct 5 ms 5356 KB n=500
38 Correct 5 ms 5356 KB n=500
39 Correct 5 ms 5356 KB n=500
40 Correct 5 ms 5356 KB n=500
41 Correct 6 ms 5356 KB n=500
42 Correct 5 ms 5356 KB n=500
43 Correct 5 ms 5356 KB n=500
44 Correct 7 ms 5356 KB n=500
45 Correct 5 ms 5356 KB n=500
46 Correct 5 ms 5356 KB n=500
47 Correct 5 ms 5356 KB n=500
48 Correct 5 ms 5356 KB n=500
49 Correct 5 ms 5356 KB n=500
50 Correct 5 ms 5356 KB n=500
51 Correct 5 ms 5356 KB n=500
52 Correct 6 ms 5356 KB n=500
53 Correct 5 ms 5356 KB n=500
54 Correct 5 ms 5356 KB n=500
55 Correct 5 ms 5228 KB n=278
56 Correct 5 ms 5356 KB n=500
57 Correct 5 ms 5356 KB n=500
58 Correct 6 ms 5356 KB n=500
59 Correct 11 ms 5996 KB n=2000
60 Correct 9 ms 5868 KB n=2000
61 Correct 9 ms 5868 KB n=2000
62 Correct 12 ms 5868 KB n=2000
63 Correct 11 ms 6124 KB n=2000
64 Correct 10 ms 5868 KB n=2000
65 Correct 10 ms 5996 KB n=2000
66 Correct 9 ms 5888 KB n=2000
67 Correct 13 ms 5996 KB n=2000
68 Correct 10 ms 5868 KB n=2000
69 Correct 11 ms 5996 KB n=2000
70 Correct 11 ms 5996 KB n=2000
71 Correct 11 ms 5996 KB n=2000
72 Correct 11 ms 5996 KB n=2000
73 Correct 10 ms 5996 KB n=2000
74 Correct 9 ms 5868 KB n=1844
75 Correct 20 ms 5996 KB n=2000
76 Correct 11 ms 5996 KB n=2000
77 Correct 10 ms 5996 KB n=2000
78 Correct 11 ms 5996 KB n=2000
79 Correct 10 ms 5996 KB n=2000
80 Correct 9 ms 5868 KB n=2000
81 Correct 10 ms 5996 KB n=2000
82 Correct 10 ms 5996 KB n=2000
83 Correct 9 ms 5868 KB n=2000
84 Correct 10 ms 5996 KB n=2000
85 Correct 10 ms 5868 KB n=2000
86 Correct 10 ms 5868 KB n=2000
87 Correct 10 ms 5996 KB n=2000
88 Correct 9 ms 5996 KB n=2000
89 Correct 9 ms 5868 KB n=2000
90 Correct 9 ms 5868 KB n=2000
91 Correct 10 ms 5996 KB n=2000

Subtask #4
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5100 KB n=5
2 Correct 4 ms 5228 KB n=100
3 Correct 4 ms 5248 KB n=100
4 Correct 5 ms 5228 KB n=100
5 Correct 4 ms 5228 KB n=100
6 Correct 4 ms 5228 KB n=100
7 Correct 4 ms 5228 KB n=100
8 Correct 4 ms 5228 KB n=100
9 Correct 4 ms 5228 KB n=100
10 Correct 4 ms 5228 KB n=100
11 Correct 4 ms 5228 KB n=100
12 Correct 4 ms 5228 KB n=100
13 Correct 5 ms 5228 KB n=100
14 Correct 4 ms 5228 KB n=100
15 Correct 4 ms 5228 KB n=100
16 Correct 4 ms 5228 KB n=100
17 Correct 4 ms 5228 KB n=100
18 Correct 4 ms 5228 KB n=100
19 Correct 4 ms 5228 KB n=100
20 Correct 4 ms 5228 KB n=100
21 Correct 5 ms 5228 KB n=100
22 Correct 4 ms 5228 KB n=100
23 Correct 4 ms 5228 KB n=100
24 Correct 3 ms 5228 KB n=100
25 Correct 4 ms 5228 KB n=100
26 Correct 3 ms 5100 KB n=12
27 Correct 4 ms 5228 KB n=100
28 Correct 5 ms 5376 KB n=500
29 Correct 5 ms 5356 KB n=500
30 Correct 5 ms 5356 KB n=500
31 Correct 5 ms 5356 KB n=500
32 Correct 5 ms 5356 KB n=500
33 Correct 5 ms 5376 KB n=500
34 Correct 5 ms 5356 KB n=500
35 Correct 5 ms 5356 KB n=500
36 Correct 5 ms 5356 KB n=500
37 Correct 5 ms 5356 KB n=500
38 Correct 5 ms 5356 KB n=500
39 Correct 5 ms 5356 KB n=500
40 Correct 5 ms 5356 KB n=500
41 Correct 6 ms 5356 KB n=500
42 Correct 5 ms 5356 KB n=500
43 Correct 5 ms 5356 KB n=500
44 Correct 7 ms 5356 KB n=500
45 Correct 5 ms 5356 KB n=500
46 Correct 5 ms 5356 KB n=500
47 Correct 5 ms 5356 KB n=500
48 Correct 5 ms 5356 KB n=500
49 Correct 5 ms 5356 KB n=500
50 Correct 5 ms 5356 KB n=500
51 Correct 5 ms 5356 KB n=500
52 Correct 6 ms 5356 KB n=500
53 Correct 5 ms 5356 KB n=500
54 Correct 5 ms 5356 KB n=500
55 Correct 5 ms 5228 KB n=278
56 Correct 5 ms 5356 KB n=500
57 Correct 5 ms 5356 KB n=500
58 Correct 6 ms 5356 KB n=500
59 Correct 11 ms 5996 KB n=2000
60 Correct 9 ms 5868 KB n=2000
61 Correct 9 ms 5868 KB n=2000
62 Correct 12 ms 5868 KB n=2000
63 Correct 11 ms 6124 KB n=2000
64 Correct 10 ms 5868 KB n=2000
65 Correct 10 ms 5996 KB n=2000
66 Correct 9 ms 5888 KB n=2000
67 Correct 13 ms 5996 KB n=2000
68 Correct 10 ms 5868 KB n=2000
69 Correct 11 ms 5996 KB n=2000
70 Correct 11 ms 5996 KB n=2000
71 Correct 11 ms 5996 KB n=2000
72 Correct 11 ms 5996 KB n=2000
73 Correct 10 ms 5996 KB n=2000
74 Correct 9 ms 5868 KB n=1844
75 Correct 20 ms 5996 KB n=2000
76 Correct 11 ms 5996 KB n=2000
77 Correct 10 ms 5996 KB n=2000
78 Correct 11 ms 5996 KB n=2000
79 Correct 10 ms 5996 KB n=2000
80 Correct 9 ms 5868 KB n=2000
81 Correct 10 ms 5996 KB n=2000
82 Correct 10 ms 5996 KB n=2000
83 Correct 9 ms 5868 KB n=2000
84 Correct 10 ms 5996 KB n=2000
85 Correct 10 ms 5868 KB n=2000
86 Correct 10 ms 5868 KB n=2000
87 Correct 10 ms 5996 KB n=2000
88 Correct 9 ms 5996 KB n=2000
89 Correct 9 ms 5868 KB n=2000
90 Correct 9 ms 5868 KB n=2000
91 Correct 10 ms 5996 KB n=2000
92 Correct 2089 ms 83304 KB n=200000
93 Correct 1701 ms 82416 KB n=200000
94 Correct 1435 ms 81772 KB n=200000
95 Correct 2001 ms 83204 KB n=200000
96 Correct 1902 ms 82992 KB n=200000
97 Correct 1805 ms 82544 KB n=200000
98 Correct 1937 ms 83112 KB n=200000
99 Correct 2207 ms 82668 KB n=200000
100 Correct 1968 ms 83296 KB n=200000
101 Correct 1371 ms 81644 KB n=200000
102 Correct 1207 ms 84492 KB n=200000
103 Correct 1198 ms 84204 KB n=200000
104 Correct 1209 ms 84172 KB n=200000
105 Correct 1223 ms 84204 KB n=200000
106 Correct 1203 ms 83948 KB n=200000
107 Correct 1226 ms 84132 KB n=200000
108 Correct 2086 ms 83456 KB n=200000
109 Correct 2052 ms 83052 KB n=200000
110 Correct 2085 ms 83000 KB n=200000
111 Correct 1782 ms 82908 KB n=200000
112 Correct 1397 ms 81516 KB n=200000
113 Correct 1711 ms 82156 KB n=200000
114 Correct 1777 ms 82908 KB n=200000
115 Correct 2130 ms 82284 KB n=200000
116 Correct 1878 ms 82652 KB n=200000
117 Correct 1362 ms 81132 KB n=200000
118 Correct 1874 ms 82064 KB n=200000
119 Correct 1943 ms 82780 KB n=200000
120 Correct 1303 ms 80996 KB n=200000
121 Correct 1297 ms 80748 KB n=200000
122 Correct 1344 ms 81408 KB n=200000
123 Correct 1234 ms 83564 KB n=200000
124 Correct 400 ms 21704 KB n=25264