답안 #40431 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
40431	2018-02-01T13:00:44 Z	szawinis	Birthday gift (IZhO18_treearray)	C++14	56 / 100	4000 ms	262144 KB

treearray

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
#include <set>
#include <unordered_map>
#include <unordered_set>
using namespace std;
const int N = 1 << 18;

int n, m, q, a[N];
vector<int> g[N];
set<int> pos[N];

int d[N];
vector<int> anc[N];
void dfs(int u, int p) {
	for(int v: g[u]) if(v != p) {
		d[v] = d[u] + 1;
		anc[v].push_back(u);
		for(int j = 0; 1 << j+1 <= d[v]; j++)
			anc[v].push_back(anc[anc[v][j]][j]);
		dfs(v, u);
	}
}
int lca(int u, int v) {
	if(d[v] > d[u]) swap(u, v);
	if(d[u] > d[v]) {
		for(int j = 0; 1 << j <= d[u] - d[v]; j++)
			if(d[u] - d[v] >> j & 1) u = anc[u][j];
	}
	if(u == v) return u;
	for(int j = 18; j >= 0; j--)
		if(j < anc[u].size() && anc[u][j] != anc[v][j])
			u = anc[u][j], v = anc[v][j];
	return anc[u][0];
}

unordered_map<int, unordered_set<int> > t[2*N];
void update(int i, int nw, int idx) {
	i += N;
	t[i][lca(a[idx], a[idx+1])].erase(idx);
	t[i][nw].insert(idx);
	i >>= 1;
	while(i >= 1) {
		t[i][lca(a[idx], a[idx+1])].erase(idx);
		t[i][nw].insert(idx);
		i >>= 1;
	}
}
int query(int l, int r, int v) {
	int res = -1;
	for(l += N, r += N + 1; l < r; l >>= 1, r >>= 1) {
		if(l & 1) {
			if(!t[l][v].empty()) res = *t[l][v].begin();
			++l;
		}
		if(r & 1) {
			--r;
			if(!t[r][v].empty()) res = *t[r][v].begin();
		}
	}
	return res;
}
int main() {
	scanf("%d %d %d", &n, &m, &q);
	for(int i = 1, u, v; i < n; i++) {
		scanf("%d %d", &u, &v);
		g[u].push_back(v);
		g[v].push_back(u);
	}
	dfs(1, 0);
	for(int i = 1; i <= m; i++) {
		scanf("%d", a+i);
		pos[a[i]].insert(i);
		if(i > 1) t[N+i-1][lca(a[i-1], a[i])].insert(i-1);
	}
	for(int i = N-1; i >= 1; i--) {
		t[i].insert(t[i<<1].begin(), t[i<<1].end());
		for(auto elem: t[i<<1|1]) {
			for(int v: elem.second)
				t[i][elem.first].insert(v);
		}
	}
	for(int z = 0, tp, l, r, v, i; z < q; z++) {
		scanf("%d", &tp);
		if(tp == 1) {
			scanf("%d %d", &i, &v);
			if(i < m) update(i, lca(v, a[i+1]), i);
			if(i > 1) update(i-1, lca(a[i-1], v), i-1);
			pos[a[i]].erase(i);
			a[i] = v;
			pos[a[i]].insert(i);
		} else {
			scanf("%d %d %d", &l, &r, &v);
			int res = query(l, r-1, v);
			if(res == -1) {
				auto it = pos[v].lower_bound(l);
				if(it == pos[v].end() || *it > r) printf("-1 -1\n");
				else printf("%d %d\n", *it, *it);
			} else printf("%d %d\n", res, res+1);
		}
	}
}

Compilation message

treearray.cpp: In function 'void dfs(int, int)':
treearray.cpp:21:24: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   for(int j = 0; 1 << j+1 <= d[v]; j++)
                        ^
treearray.cpp: In function 'int lca(int, int)':
treearray.cpp:30:12: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
    if(d[u] - d[v] >> j & 1) u = anc[u][j];
            ^
treearray.cpp:34:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(j < anc[u].size() && anc[u][j] != anc[v][j])
        ^
treearray.cpp: In function 'int main()':
treearray.cpp:66:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d", &n, &m, &q);
                               ^
treearray.cpp:68:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &u, &v);
                         ^
treearray.cpp:74:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", a+i);
                   ^
treearray.cpp:86:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &tp);
                   ^
treearray.cpp:88:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d %d", &i, &v);
                          ^
treearray.cpp:95:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d %d %d", &l, &r, &v);
                                 ^

Subtask #1
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	53624 KB	n=5
2	Correct	49 ms	53936 KB	n=100
3	Correct	52 ms	53936 KB	n=100
4	Correct	49 ms	54000 KB	n=100
5	Correct	53 ms	54144 KB	n=100
6	Correct	62 ms	54144 KB	n=100
7	Correct	62 ms	54144 KB	n=100
8	Correct	49 ms	54144 KB	n=100
9	Correct	52 ms	54144 KB	n=100
10	Correct	52 ms	54144 KB	n=100
11	Correct	51 ms	54144 KB	n=100
12	Correct	52 ms	54144 KB	n=100
13	Correct	51 ms	54144 KB	n=100
14	Correct	53 ms	54144 KB	n=100
15	Correct	51 ms	54144 KB	n=100
16	Correct	51 ms	54144 KB	n=100
17	Correct	54 ms	54236 KB	n=100
18	Correct	64 ms	54236 KB	n=100
19	Correct	61 ms	54236 KB	n=100
20	Correct	52 ms	54236 KB	n=100
21	Correct	54 ms	54236 KB	n=100
22	Correct	51 ms	54236 KB	n=100
23	Correct	52 ms	54236 KB	n=100
24	Correct	51 ms	54236 KB	n=100
25	Correct	51 ms	54236 KB	n=100
26	Correct	50 ms	54236 KB	n=12
27	Correct	54 ms	54236 KB	n=100

Subtask #2
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	53624 KB	n=5
2	Correct	49 ms	53936 KB	n=100
3	Correct	52 ms	53936 KB	n=100
4	Correct	49 ms	54000 KB	n=100
5	Correct	53 ms	54144 KB	n=100
6	Correct	62 ms	54144 KB	n=100
7	Correct	62 ms	54144 KB	n=100
8	Correct	49 ms	54144 KB	n=100
9	Correct	52 ms	54144 KB	n=100
10	Correct	52 ms	54144 KB	n=100
11	Correct	51 ms	54144 KB	n=100
12	Correct	52 ms	54144 KB	n=100
13	Correct	51 ms	54144 KB	n=100
14	Correct	53 ms	54144 KB	n=100
15	Correct	51 ms	54144 KB	n=100
16	Correct	51 ms	54144 KB	n=100
17	Correct	54 ms	54236 KB	n=100
18	Correct	64 ms	54236 KB	n=100
19	Correct	61 ms	54236 KB	n=100
20	Correct	52 ms	54236 KB	n=100
21	Correct	54 ms	54236 KB	n=100
22	Correct	51 ms	54236 KB	n=100
23	Correct	52 ms	54236 KB	n=100
24	Correct	51 ms	54236 KB	n=100
25	Correct	51 ms	54236 KB	n=100
26	Correct	50 ms	54236 KB	n=12
27	Correct	54 ms	54236 KB	n=100
28	Correct	54 ms	54620 KB	n=500
29	Correct	66 ms	55464 KB	n=500
30	Correct	58 ms	55464 KB	n=500
31	Correct	58 ms	55464 KB	n=500
32	Correct	57 ms	55464 KB	n=500
33	Correct	59 ms	55464 KB	n=500
34	Correct	55 ms	55464 KB	n=500
35	Correct	58 ms	55516 KB	n=500
36	Correct	53 ms	55516 KB	n=500
37	Correct	54 ms	55516 KB	n=500
38	Correct	53 ms	55516 KB	n=500
39	Correct	55 ms	55516 KB	n=500
40	Correct	51 ms	55516 KB	n=500
41	Correct	53 ms	55516 KB	n=500
42	Correct	59 ms	55516 KB	n=500
43	Correct	61 ms	55516 KB	n=500
44	Correct	62 ms	55516 KB	n=500
45	Correct	65 ms	55516 KB	n=500
46	Correct	58 ms	55516 KB	n=500
47	Correct	59 ms	55516 KB	n=500
48	Correct	56 ms	55516 KB	n=500
49	Correct	67 ms	55516 KB	n=500
50	Correct	63 ms	55516 KB	n=500
51	Correct	63 ms	55516 KB	n=500
52	Correct	58 ms	55576 KB	n=500
53	Correct	59 ms	55576 KB	n=500
54	Correct	58 ms	55576 KB	n=500
55	Correct	59 ms	55576 KB	n=278
56	Correct	65 ms	55576 KB	n=500
57	Correct	60 ms	55576 KB	n=500
58	Correct	54 ms	55576 KB	n=500

Subtask #3
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	53624 KB	n=5
2	Correct	49 ms	53936 KB	n=100
3	Correct	52 ms	53936 KB	n=100
4	Correct	49 ms	54000 KB	n=100
5	Correct	53 ms	54144 KB	n=100
6	Correct	62 ms	54144 KB	n=100
7	Correct	62 ms	54144 KB	n=100
8	Correct	49 ms	54144 KB	n=100
9	Correct	52 ms	54144 KB	n=100
10	Correct	52 ms	54144 KB	n=100
11	Correct	51 ms	54144 KB	n=100
12	Correct	52 ms	54144 KB	n=100
13	Correct	51 ms	54144 KB	n=100
14	Correct	53 ms	54144 KB	n=100
15	Correct	51 ms	54144 KB	n=100
16	Correct	51 ms	54144 KB	n=100
17	Correct	54 ms	54236 KB	n=100
18	Correct	64 ms	54236 KB	n=100
19	Correct	61 ms	54236 KB	n=100
20	Correct	52 ms	54236 KB	n=100
21	Correct	54 ms	54236 KB	n=100
22	Correct	51 ms	54236 KB	n=100
23	Correct	52 ms	54236 KB	n=100
24	Correct	51 ms	54236 KB	n=100
25	Correct	51 ms	54236 KB	n=100
26	Correct	50 ms	54236 KB	n=12
27	Correct	54 ms	54236 KB	n=100
28	Correct	54 ms	54620 KB	n=500
29	Correct	66 ms	55464 KB	n=500
30	Correct	58 ms	55464 KB	n=500
31	Correct	58 ms	55464 KB	n=500
32	Correct	57 ms	55464 KB	n=500
33	Correct	59 ms	55464 KB	n=500
34	Correct	55 ms	55464 KB	n=500
35	Correct	58 ms	55516 KB	n=500
36	Correct	53 ms	55516 KB	n=500
37	Correct	54 ms	55516 KB	n=500
38	Correct	53 ms	55516 KB	n=500
39	Correct	55 ms	55516 KB	n=500
40	Correct	51 ms	55516 KB	n=500
41	Correct	53 ms	55516 KB	n=500
42	Correct	59 ms	55516 KB	n=500
43	Correct	61 ms	55516 KB	n=500
44	Correct	62 ms	55516 KB	n=500
45	Correct	65 ms	55516 KB	n=500
46	Correct	58 ms	55516 KB	n=500
47	Correct	59 ms	55516 KB	n=500
48	Correct	56 ms	55516 KB	n=500
49	Correct	67 ms	55516 KB	n=500
50	Correct	63 ms	55516 KB	n=500
51	Correct	63 ms	55516 KB	n=500
52	Correct	58 ms	55576 KB	n=500
53	Correct	59 ms	55576 KB	n=500
54	Correct	58 ms	55576 KB	n=500
55	Correct	59 ms	55576 KB	n=278
56	Correct	65 ms	55576 KB	n=500
57	Correct	60 ms	55576 KB	n=500
58	Correct	54 ms	55576 KB	n=500
59	Correct	77 ms	56584 KB	n=2000
60	Correct	107 ms	60764 KB	n=2000
61	Correct	98 ms	60764 KB	n=2000
62	Correct	93 ms	60764 KB	n=2000
63	Correct	76 ms	60764 KB	n=2000
64	Correct	95 ms	60764 KB	n=2000
65	Correct	74 ms	60764 KB	n=2000
66	Correct	102 ms	60764 KB	n=2000
67	Correct	82 ms	60764 KB	n=2000
68	Correct	97 ms	60764 KB	n=2000
69	Correct	64 ms	60764 KB	n=2000
70	Correct	63 ms	60764 KB	n=2000
71	Correct	62 ms	60764 KB	n=2000
72	Correct	62 ms	60764 KB	n=2000
73	Correct	70 ms	60764 KB	n=2000
74	Correct	69 ms	60764 KB	n=1844
75	Correct	60 ms	60764 KB	n=2000
76	Correct	92 ms	60764 KB	n=2000
77	Correct	77 ms	60764 KB	n=2000
78	Correct	81 ms	60764 KB	n=2000
79	Correct	78 ms	60764 KB	n=2000
80	Correct	99 ms	60764 KB	n=2000
81	Correct	89 ms	60764 KB	n=2000
82	Correct	81 ms	60764 KB	n=2000
83	Correct	102 ms	60764 KB	n=2000
84	Correct	79 ms	60764 KB	n=2000
85	Correct	104 ms	60764 KB	n=2000
86	Correct	100 ms	60764 KB	n=2000
87	Correct	80 ms	60764 KB	n=2000
88	Correct	97 ms	60764 KB	n=2000
89	Correct	98 ms	60764 KB	n=2000
90	Correct	92 ms	60764 KB	n=2000
91	Correct	73 ms	60764 KB	n=2000

Subtask #4
0 / 44.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	53624 KB	n=5
2	Correct	49 ms	53936 KB	n=100
3	Correct	52 ms	53936 KB	n=100
4	Correct	49 ms	54000 KB	n=100
5	Correct	53 ms	54144 KB	n=100
6	Correct	62 ms	54144 KB	n=100
7	Correct	62 ms	54144 KB	n=100
8	Correct	49 ms	54144 KB	n=100
9	Correct	52 ms	54144 KB	n=100
10	Correct	52 ms	54144 KB	n=100
11	Correct	51 ms	54144 KB	n=100
12	Correct	52 ms	54144 KB	n=100
13	Correct	51 ms	54144 KB	n=100
14	Correct	53 ms	54144 KB	n=100
15	Correct	51 ms	54144 KB	n=100
16	Correct	51 ms	54144 KB	n=100
17	Correct	54 ms	54236 KB	n=100
18	Correct	64 ms	54236 KB	n=100
19	Correct	61 ms	54236 KB	n=100
20	Correct	52 ms	54236 KB	n=100
21	Correct	54 ms	54236 KB	n=100
22	Correct	51 ms	54236 KB	n=100
23	Correct	52 ms	54236 KB	n=100
24	Correct	51 ms	54236 KB	n=100
25	Correct	51 ms	54236 KB	n=100
26	Correct	50 ms	54236 KB	n=12
27	Correct	54 ms	54236 KB	n=100
28	Correct	54 ms	54620 KB	n=500
29	Correct	66 ms	55464 KB	n=500
30	Correct	58 ms	55464 KB	n=500
31	Correct	58 ms	55464 KB	n=500
32	Correct	57 ms	55464 KB	n=500
33	Correct	59 ms	55464 KB	n=500
34	Correct	55 ms	55464 KB	n=500
35	Correct	58 ms	55516 KB	n=500
36	Correct	53 ms	55516 KB	n=500
37	Correct	54 ms	55516 KB	n=500
38	Correct	53 ms	55516 KB	n=500
39	Correct	55 ms	55516 KB	n=500
40	Correct	51 ms	55516 KB	n=500
41	Correct	53 ms	55516 KB	n=500
42	Correct	59 ms	55516 KB	n=500
43	Correct	61 ms	55516 KB	n=500
44	Correct	62 ms	55516 KB	n=500
45	Correct	65 ms	55516 KB	n=500
46	Correct	58 ms	55516 KB	n=500
47	Correct	59 ms	55516 KB	n=500
48	Correct	56 ms	55516 KB	n=500
49	Correct	67 ms	55516 KB	n=500
50	Correct	63 ms	55516 KB	n=500
51	Correct	63 ms	55516 KB	n=500
52	Correct	58 ms	55576 KB	n=500
53	Correct	59 ms	55576 KB	n=500
54	Correct	58 ms	55576 KB	n=500
55	Correct	59 ms	55576 KB	n=278
56	Correct	65 ms	55576 KB	n=500
57	Correct	60 ms	55576 KB	n=500
58	Correct	54 ms	55576 KB	n=500
59	Correct	77 ms	56584 KB	n=2000
60	Correct	107 ms	60764 KB	n=2000
61	Correct	98 ms	60764 KB	n=2000
62	Correct	93 ms	60764 KB	n=2000
63	Correct	76 ms	60764 KB	n=2000
64	Correct	95 ms	60764 KB	n=2000
65	Correct	74 ms	60764 KB	n=2000
66	Correct	102 ms	60764 KB	n=2000
67	Correct	82 ms	60764 KB	n=2000
68	Correct	97 ms	60764 KB	n=2000
69	Correct	64 ms	60764 KB	n=2000
70	Correct	63 ms	60764 KB	n=2000
71	Correct	62 ms	60764 KB	n=2000
72	Correct	62 ms	60764 KB	n=2000
73	Correct	70 ms	60764 KB	n=2000
74	Correct	69 ms	60764 KB	n=1844
75	Correct	60 ms	60764 KB	n=2000
76	Correct	92 ms	60764 KB	n=2000
77	Correct	77 ms	60764 KB	n=2000
78	Correct	81 ms	60764 KB	n=2000
79	Correct	78 ms	60764 KB	n=2000
80	Correct	99 ms	60764 KB	n=2000
81	Correct	89 ms	60764 KB	n=2000
82	Correct	81 ms	60764 KB	n=2000
83	Correct	102 ms	60764 KB	n=2000
84	Correct	79 ms	60764 KB	n=2000
85	Correct	104 ms	60764 KB	n=2000
86	Correct	100 ms	60764 KB	n=2000
87	Correct	80 ms	60764 KB	n=2000
88	Correct	97 ms	60764 KB	n=2000
89	Correct	98 ms	60764 KB	n=2000
90	Correct	92 ms	60764 KB	n=2000
91	Correct	73 ms	60764 KB	n=2000
92	Execution timed out	4048 ms	262144 KB	Time limit exceeded
93	Halted	0 ms	0 KB	-

답안 #40431

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 18.0 / 18.0

Subtask #3 26.0 / 26.0

Subtask #4 0 / 44.0

Subtask #1
12.0 / 12.0

Subtask #2
18.0 / 18.0

Subtask #3
26.0 / 26.0

Subtask #4
0 / 44.0