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답안 #107133

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
107133 2019-04-22T07:00:16 Z Shafin666 Birthday gift (IZhO18_treearray) C++14
100 / 100
 3883 ms 102984 KB 
#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define pii pair<ll, ll>
#define  read_input         freopen("in.txt","r", stdin)
#define  print_output       freopen("out.txt","w", stdout)
typedef long long ll;
typedef long double ld;
using namespace std;

const int maxn = 2e5+10, inf = 1e9+7;
set<int> S[maxn], T[maxn];
vector<int> adj[maxn];
int parent[20][maxn], level[maxn], a[maxn];

void dfs(int u, int par, int lev = 0) {
    level[u] = lev;
    parent[0][u] = par;

    for(auto it : adj[u]) 
        if(it != par) dfs(it, u, lev+1);
}

int lca(int u, int v) {
    if(level[u] < level[v]) swap(u, v);
    int i, k;
    
    if(level[u] != level[v]) {
        for(i = 19; i >= 0; i--) {
            if(parent[i][u] != -1 && level[parent[i][u]] >= level[v]) u = parent[i][u];
        }
    }
    if(u == v) return u;
    for(i = 19; i >= 0; i--) {
        if(parent[i][u] != -1 && parent[i][u] != parent[i][v]) {
            u = parent[i][u];
            v = parent[i][v];
        }
    } return parent[0][u];
}

int main()
{   
    int n, m, q;

    cin >> n >> m >> q;
    for(int i = 1, x, y; i < n; i++) {
        cin >> x >> y;
        adj[x].pb(y);
        adj[y].pb(x);
    } 

    memset(parent, -1, sizeof parent);
    dfs(1, -1);
    for(int i = 1; 1 << i < n; i++)
        for(int j = 1; j <= n; j++)
            if(parent[i-1][j] != -1) parent[i][j] = parent[i-1][parent[i-1][j]];

    for(int i = 1; i <= m; i++) {
        cin >> a[i];
        S[a[i]].insert(i);
        if(i > 1) T[lca(a[i], a[i-1])].insert(i);
    }
    
    for(int i = 1; i <= n; i++) S[i].insert(inf), T[i].insert(inf);

    while(q--) {
        int ch;
        cin >> ch;

        if(ch == 1) {
            int pos, v;
            cin >> pos >> v;

            if(pos > 1) T[lca(a[pos], a[pos-1])].erase(pos);
            if(pos < m) T[lca(a[pos], a[pos+1])].erase(pos+1);

            S[a[pos]].erase(pos);
            a[pos] = v;
            S[a[pos]].insert(pos);

            if(pos > 1) T[lca(a[pos], a[pos-1])].insert(pos);
            if(pos < m) T[lca(a[pos], a[pos+1])].insert(pos+1);
        }
        else {
            int l, r, v;
            cin >> l >> r >> v;

            int d = *S[v].lower_bound(l);
            int e = *T[v].lower_bound(l+1);

            if(d <= r) cout << d << ' ' << d << endl;
            else if(e <= r) cout << e-1 << ' ' << e << endl;
            else cout << -1 << ' ' << -1 << endl; 
        }
    }

    return 0;   
}

Compilation message

treearray.cpp: In function 'int lca(int, int)':
treearray.cpp:26:12: warning: unused variable 'k' [-Wunused-variable]
     int i, k;
            ^

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 39544 KB n=5
2 Correct 41 ms 39552 KB n=100
3 Correct 40 ms 39416 KB n=100
4 Correct 39 ms 39516 KB n=100
5 Correct 41 ms 39420 KB n=100
6 Correct 37 ms 39464 KB n=100
7 Correct 39 ms 39524 KB n=100
8 Correct 48 ms 39416 KB n=100
9 Correct 34 ms 39552 KB n=100
10 Correct 40 ms 39416 KB n=100
11 Correct 42 ms 39544 KB n=100
12 Correct 37 ms 39416 KB n=100
13 Correct 39 ms 39544 KB n=100
14 Correct 43 ms 39628 KB n=100
15 Correct 38 ms 39480 KB n=100
16 Correct 41 ms 39568 KB n=100
17 Correct 41 ms 39416 KB n=100
18 Correct 41 ms 39416 KB n=100
19 Correct 35 ms 39552 KB n=100
20 Correct 39 ms 39416 KB n=100
21 Correct 35 ms 39544 KB n=100
22 Correct 39 ms 39516 KB n=100
23 Correct 38 ms 39544 KB n=100
24 Correct 32 ms 39544 KB n=100
25 Correct 42 ms 39544 KB n=100
26 Correct 41 ms 39416 KB n=12
27 Correct 41 ms 39544 KB n=100

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 39544 KB n=5
2 Correct 41 ms 39552 KB n=100
3 Correct 40 ms 39416 KB n=100
4 Correct 39 ms 39516 KB n=100
5 Correct 41 ms 39420 KB n=100
6 Correct 37 ms 39464 KB n=100
7 Correct 39 ms 39524 KB n=100
8 Correct 48 ms 39416 KB n=100
9 Correct 34 ms 39552 KB n=100
10 Correct 40 ms 39416 KB n=100
11 Correct 42 ms 39544 KB n=100
12 Correct 37 ms 39416 KB n=100
13 Correct 39 ms 39544 KB n=100
14 Correct 43 ms 39628 KB n=100
15 Correct 38 ms 39480 KB n=100
16 Correct 41 ms 39568 KB n=100
17 Correct 41 ms 39416 KB n=100
18 Correct 41 ms 39416 KB n=100
19 Correct 35 ms 39552 KB n=100
20 Correct 39 ms 39416 KB n=100
21 Correct 35 ms 39544 KB n=100
22 Correct 39 ms 39516 KB n=100
23 Correct 38 ms 39544 KB n=100
24 Correct 32 ms 39544 KB n=100
25 Correct 42 ms 39544 KB n=100
26 Correct 41 ms 39416 KB n=12
27 Correct 41 ms 39544 KB n=100
28 Correct 43 ms 39580 KB n=500
29 Correct 39 ms 39672 KB n=500
30 Correct 40 ms 39544 KB n=500
31 Correct 44 ms 39672 KB n=500
32 Correct 40 ms 39680 KB n=500
33 Correct 45 ms 39644 KB n=500
34 Correct 38 ms 39588 KB n=500
35 Correct 43 ms 39672 KB n=500
36 Correct 42 ms 39548 KB n=500
37 Correct 39 ms 39548 KB n=500
38 Correct 43 ms 39544 KB n=500
39 Correct 48 ms 39544 KB n=500
40 Correct 50 ms 39544 KB n=500
41 Correct 45 ms 39672 KB n=500
42 Correct 47 ms 39672 KB n=500
43 Correct 40 ms 39544 KB n=500
44 Correct 39 ms 39544 KB n=500
45 Correct 43 ms 39672 KB n=500
46 Correct 41 ms 39672 KB n=500
47 Correct 41 ms 39672 KB n=500
48 Correct 37 ms 39552 KB n=500
49 Correct 41 ms 39544 KB n=500
50 Correct 48 ms 39544 KB n=500
51 Correct 40 ms 39548 KB n=500
52 Correct 42 ms 39544 KB n=500
53 Correct 42 ms 39672 KB n=500
54 Correct 41 ms 39672 KB n=500
55 Correct 35 ms 39544 KB n=278
56 Correct 38 ms 39672 KB n=500
57 Correct 39 ms 39680 KB n=500
58 Correct 39 ms 39552 KB n=500

Subtask #3
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 39544 KB n=5
2 Correct 41 ms 39552 KB n=100
3 Correct 40 ms 39416 KB n=100
4 Correct 39 ms 39516 KB n=100
5 Correct 41 ms 39420 KB n=100
6 Correct 37 ms 39464 KB n=100
7 Correct 39 ms 39524 KB n=100
8 Correct 48 ms 39416 KB n=100
9 Correct 34 ms 39552 KB n=100
10 Correct 40 ms 39416 KB n=100
11 Correct 42 ms 39544 KB n=100
12 Correct 37 ms 39416 KB n=100
13 Correct 39 ms 39544 KB n=100
14 Correct 43 ms 39628 KB n=100
15 Correct 38 ms 39480 KB n=100
16 Correct 41 ms 39568 KB n=100
17 Correct 41 ms 39416 KB n=100
18 Correct 41 ms 39416 KB n=100
19 Correct 35 ms 39552 KB n=100
20 Correct 39 ms 39416 KB n=100
21 Correct 35 ms 39544 KB n=100
22 Correct 39 ms 39516 KB n=100
23 Correct 38 ms 39544 KB n=100
24 Correct 32 ms 39544 KB n=100
25 Correct 42 ms 39544 KB n=100
26 Correct 41 ms 39416 KB n=12
27 Correct 41 ms 39544 KB n=100
28 Correct 43 ms 39580 KB n=500
29 Correct 39 ms 39672 KB n=500
30 Correct 40 ms 39544 KB n=500
31 Correct 44 ms 39672 KB n=500
32 Correct 40 ms 39680 KB n=500
33 Correct 45 ms 39644 KB n=500
34 Correct 38 ms 39588 KB n=500
35 Correct 43 ms 39672 KB n=500
36 Correct 42 ms 39548 KB n=500
37 Correct 39 ms 39548 KB n=500
38 Correct 43 ms 39544 KB n=500
39 Correct 48 ms 39544 KB n=500
40 Correct 50 ms 39544 KB n=500
41 Correct 45 ms 39672 KB n=500
42 Correct 47 ms 39672 KB n=500
43 Correct 40 ms 39544 KB n=500
44 Correct 39 ms 39544 KB n=500
45 Correct 43 ms 39672 KB n=500
46 Correct 41 ms 39672 KB n=500
47 Correct 41 ms 39672 KB n=500
48 Correct 37 ms 39552 KB n=500
49 Correct 41 ms 39544 KB n=500
50 Correct 48 ms 39544 KB n=500
51 Correct 40 ms 39548 KB n=500
52 Correct 42 ms 39544 KB n=500
53 Correct 42 ms 39672 KB n=500
54 Correct 41 ms 39672 KB n=500
55 Correct 35 ms 39544 KB n=278
56 Correct 38 ms 39672 KB n=500
57 Correct 39 ms 39680 KB n=500
58 Correct 39 ms 39552 KB n=500
59 Correct 50 ms 40008 KB n=2000
60 Correct 52 ms 40016 KB n=2000
61 Correct 43 ms 40060 KB n=2000
62 Correct 50 ms 40008 KB n=2000
63 Correct 43 ms 40064 KB n=2000
64 Correct 59 ms 40056 KB n=2000
65 Correct 53 ms 40056 KB n=2000
66 Correct 43 ms 40064 KB n=2000
67 Correct 48 ms 40056 KB n=2000
68 Correct 46 ms 40028 KB n=2000
69 Correct 52 ms 39936 KB n=2000
70 Correct 50 ms 40064 KB n=2000
71 Correct 50 ms 40056 KB n=2000
72 Correct 55 ms 40056 KB n=2000
73 Correct 42 ms 40060 KB n=2000
74 Correct 42 ms 39928 KB n=1844
75 Correct 49 ms 39928 KB n=2000
76 Correct 81 ms 39984 KB n=2000
77 Correct 50 ms 40044 KB n=2000
78 Correct 48 ms 39952 KB n=2000
79 Correct 59 ms 39928 KB n=2000
80 Correct 47 ms 40064 KB n=2000
81 Correct 50 ms 40056 KB n=2000
82 Correct 46 ms 39928 KB n=2000
83 Correct 53 ms 40056 KB n=2000
84 Correct 50 ms 40056 KB n=2000
85 Correct 44 ms 40056 KB n=2000
86 Correct 51 ms 40056 KB n=2000
87 Correct 47 ms 39928 KB n=2000
88 Correct 58 ms 40056 KB n=2000
89 Correct 47 ms 40056 KB n=2000
90 Correct 53 ms 40096 KB n=2000
91 Correct 48 ms 39928 KB n=2000

Subtask #4
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 39544 KB n=5
2 Correct 41 ms 39552 KB n=100
3 Correct 40 ms 39416 KB n=100
4 Correct 39 ms 39516 KB n=100
5 Correct 41 ms 39420 KB n=100
6 Correct 37 ms 39464 KB n=100
7 Correct 39 ms 39524 KB n=100
8 Correct 48 ms 39416 KB n=100
9 Correct 34 ms 39552 KB n=100
10 Correct 40 ms 39416 KB n=100
11 Correct 42 ms 39544 KB n=100
12 Correct 37 ms 39416 KB n=100
13 Correct 39 ms 39544 KB n=100
14 Correct 43 ms 39628 KB n=100
15 Correct 38 ms 39480 KB n=100
16 Correct 41 ms 39568 KB n=100
17 Correct 41 ms 39416 KB n=100
18 Correct 41 ms 39416 KB n=100
19 Correct 35 ms 39552 KB n=100
20 Correct 39 ms 39416 KB n=100
21 Correct 35 ms 39544 KB n=100
22 Correct 39 ms 39516 KB n=100
23 Correct 38 ms 39544 KB n=100
24 Correct 32 ms 39544 KB n=100
25 Correct 42 ms 39544 KB n=100
26 Correct 41 ms 39416 KB n=12
27 Correct 41 ms 39544 KB n=100
28 Correct 43 ms 39580 KB n=500
29 Correct 39 ms 39672 KB n=500
30 Correct 40 ms 39544 KB n=500
31 Correct 44 ms 39672 KB n=500
32 Correct 40 ms 39680 KB n=500
33 Correct 45 ms 39644 KB n=500
34 Correct 38 ms 39588 KB n=500
35 Correct 43 ms 39672 KB n=500
36 Correct 42 ms 39548 KB n=500
37 Correct 39 ms 39548 KB n=500
38 Correct 43 ms 39544 KB n=500
39 Correct 48 ms 39544 KB n=500
40 Correct 50 ms 39544 KB n=500
41 Correct 45 ms 39672 KB n=500
42 Correct 47 ms 39672 KB n=500
43 Correct 40 ms 39544 KB n=500
44 Correct 39 ms 39544 KB n=500
45 Correct 43 ms 39672 KB n=500
46 Correct 41 ms 39672 KB n=500
47 Correct 41 ms 39672 KB n=500
48 Correct 37 ms 39552 KB n=500
49 Correct 41 ms 39544 KB n=500
50 Correct 48 ms 39544 KB n=500
51 Correct 40 ms 39548 KB n=500
52 Correct 42 ms 39544 KB n=500
53 Correct 42 ms 39672 KB n=500
54 Correct 41 ms 39672 KB n=500
55 Correct 35 ms 39544 KB n=278
56 Correct 38 ms 39672 KB n=500
57 Correct 39 ms 39680 KB n=500
58 Correct 39 ms 39552 KB n=500
59 Correct 50 ms 40008 KB n=2000
60 Correct 52 ms 40016 KB n=2000
61 Correct 43 ms 40060 KB n=2000
62 Correct 50 ms 40008 KB n=2000
63 Correct 43 ms 40064 KB n=2000
64 Correct 59 ms 40056 KB n=2000
65 Correct 53 ms 40056 KB n=2000
66 Correct 43 ms 40064 KB n=2000
67 Correct 48 ms 40056 KB n=2000
68 Correct 46 ms 40028 KB n=2000
69 Correct 52 ms 39936 KB n=2000
70 Correct 50 ms 40064 KB n=2000
71 Correct 50 ms 40056 KB n=2000
72 Correct 55 ms 40056 KB n=2000
73 Correct 42 ms 40060 KB n=2000
74 Correct 42 ms 39928 KB n=1844
75 Correct 49 ms 39928 KB n=2000
76 Correct 81 ms 39984 KB n=2000
77 Correct 50 ms 40044 KB n=2000
78 Correct 48 ms 39952 KB n=2000
79 Correct 59 ms 39928 KB n=2000
80 Correct 47 ms 40064 KB n=2000
81 Correct 50 ms 40056 KB n=2000
82 Correct 46 ms 39928 KB n=2000
83 Correct 53 ms 40056 KB n=2000
84 Correct 50 ms 40056 KB n=2000
85 Correct 44 ms 40056 KB n=2000
86 Correct 51 ms 40056 KB n=2000
87 Correct 47 ms 39928 KB n=2000
88 Correct 58 ms 40056 KB n=2000
89 Correct 47 ms 40056 KB n=2000
90 Correct 53 ms 40096 KB n=2000
91 Correct 48 ms 39928 KB n=2000
92 Correct 1781 ms 93580 KB n=200000
93 Correct 3475 ms 98400 KB n=200000
94 Correct 3715 ms 101840 KB n=200000
95 Correct 1860 ms 93088 KB n=200000
96 Correct 1929 ms 93364 KB n=200000
97 Correct 3842 ms 97548 KB n=200000
98 Correct 2096 ms 93444 KB n=200000
99 Correct 2256 ms 93492 KB n=200000
100 Correct 1916 ms 93312 KB n=200000
101 Correct 3388 ms 102984 KB n=200000
102 Correct 1642 ms 94540 KB n=200000
103 Correct 1525 ms 94452 KB n=200000
104 Correct 1634 ms 94536 KB n=200000
105 Correct 1498 ms 94840 KB n=200000
106 Correct 1531 ms 94844 KB n=200000
107 Correct 1404 ms 94832 KB n=200000
108 Correct 2431 ms 93404 KB n=200000
109 Correct 2188 ms 93528 KB n=200000
110 Correct 2245 ms 93312 KB n=200000
111 Correct 1832 ms 92876 KB n=200000
112 Correct 3470 ms 101916 KB n=200000
113 Correct 3598 ms 97548 KB n=200000
114 Correct 2001 ms 92816 KB n=200000
115 Correct 3817 ms 95532 KB n=200000
116 Correct 1786 ms 93436 KB n=200000
117 Correct 3567 ms 102372 KB n=200000
118 Correct 3883 ms 96500 KB n=200000
119 Correct 1996 ms 93524 KB n=200000
120 Correct 3364 ms 102036 KB n=200000
121 Correct 3351 ms 102032 KB n=200000
122 Correct 3390 ms 102368 KB n=200000
123 Correct 1704 ms 94716 KB n=200000
124 Correct 800 ms 54804 KB n=25264