oj.uz

Submission #54195

# Submission time Handle Problem Language Result Execution time Memory
54195 2018-07-02T18:29:37 Z ulna Birthday gift (IZhO18_treearray) C++11
56 / 100
 1876 ms 263168 KB 
#include <bits/stdc++.h>
using namespace std;

// why am I so weak

const int maxn = 2e5;

int n, m, q;
int a[maxn];

vector<int> g[maxn];

#define MAX_LOG 18

int depth[maxn];
int par[MAX_LOG][maxn];

set<int> s[200055];
set<int> ss[200055];

void dfs(int v, int par = -1, int d = 0) {
	::par[0][v] = par;
	depth[v] = d;

	for (auto u : g[v]) if (u != par) {
		dfs(u, v, d + 1);
	}
}
inline int lca(int v, int u) {
	if (depth[u] > depth[v]) swap(u, v);

	for (int i = 0; i < MAX_LOG; i++) if (((depth[v] - depth[u]) >> i) & 1) {
		v = par[i][v];
	}

	if (u == v) return u;

	for (int i = MAX_LOG - 1; i >= 0; i--) if (par[i][v] != par[i][u]) {
		v = par[i][v], u = par[i][u];
	}

	return par[0][v];
}
inline void upd(int id, int mode) {
	if (id < 0 || id + 1 >= m) return;

	if (mode == -1) ss[lca(a[id], a[id + 1])].erase(id);
	else ss[lca(a[id], a[id + 1])].insert(id);
}
int main() {
	cin >> n >> m >> q;

	for (int i = 0; i + 1 < n; i++) {
		int x, y;
		scanf("%d %d", &x, &y);
		x--, y--;

		g[x].push_back(y);
		g[y].push_back(x);
	}

	dfs(0);

	for (int i = 0; i + 1 < MAX_LOG; i++) for (int j = 0; j < n; j++) {
		if (par[i][j] < 0) par[i + 1][j] = -1;
		else par[i + 1][j] = par[i][par[i][j]];
	}

	for (int i = 0; i < m; i++) {
		scanf("%d", &a[i]);
		a[i]--;
		s[a[i]].insert(i);
	}

	for (int i = 0; i + 1 < m; i++) {
		ss[lca(a[i], a[i + 1])].insert(i);	
	}

	while (q--) {
		int ope;
		scanf("%d", &ope);

		if (ope == 1) {
			int x, y;
			scanf("%d %d", &x, &y);
			x--, y--;

			s[a[x]].erase(x);

			upd(x, -1);
			upd(x - 1, -1);

			a[x] = y;
			s[a[x]].insert(x);

			upd(x, 1);
			upd(x - 1, 1);
		} else {
			int x, y, z;
			scanf("%d %d %d", &x, &y, &z);
			x--, y--, z--;
			
			auto lb = s[z].lower_bound(x);

			if (lb != s[z].end() && *lb <= y) {
				printf("%d %d\n", *lb + 1, *lb + 1);
				continue;
			}

			lb = ss[z].lower_bound(x);

			if (lb != ss[z].end() && *lb < y) {
				printf("%d %d\n", *lb + 1, *lb + 2);
				continue;
			}

			puts("-1 -1");
		}
	}

	return 0;
}

Compilation message

treearray.cpp: In function 'int main()':
treearray.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &x, &y);
   ~~~~~^~~~~~~~~~~~~~~~~
treearray.cpp:70:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ~~~~~^~~~~~~~~~~~~
treearray.cpp:81:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &ope);
   ~~~~~^~~~~~~~~~~~
treearray.cpp:85:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d %d", &x, &y);
    ~~~~~^~~~~~~~~~~~~~~~~
treearray.cpp:100:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d %d %d", &x, &y, &z);
    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23888 KB n=5
2 Correct 21 ms 24048 KB n=100
3 Correct 22 ms 24048 KB n=100
4 Correct 22 ms 24152 KB n=100
5 Correct 25 ms 24152 KB n=100
6 Correct 24 ms 24152 KB n=100
7 Correct 22 ms 24176 KB n=100
8 Correct 25 ms 24372 KB n=100
9 Correct 23 ms 24372 KB n=100
10 Correct 22 ms 24372 KB n=100
11 Correct 22 ms 24372 KB n=100
12 Correct 21 ms 24372 KB n=100
13 Correct 22 ms 24372 KB n=100
14 Correct 21 ms 24372 KB n=100
15 Correct 22 ms 24372 KB n=100
16 Correct 21 ms 24372 KB n=100
17 Correct 21 ms 24372 KB n=100
18 Correct 22 ms 24372 KB n=100
19 Correct 22 ms 24372 KB n=100
20 Correct 21 ms 24372 KB n=100
21 Correct 21 ms 24372 KB n=100
22 Correct 21 ms 24372 KB n=100
23 Correct 21 ms 24372 KB n=100
24 Correct 21 ms 24372 KB n=100
25 Correct 21 ms 24372 KB n=100
26 Correct 21 ms 24372 KB n=12
27 Correct 21 ms 24392 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23888 KB n=5
2 Correct 21 ms 24048 KB n=100
3 Correct 22 ms 24048 KB n=100
4 Correct 22 ms 24152 KB n=100
5 Correct 25 ms 24152 KB n=100
6 Correct 24 ms 24152 KB n=100
7 Correct 22 ms 24176 KB n=100
8 Correct 25 ms 24372 KB n=100
9 Correct 23 ms 24372 KB n=100
10 Correct 22 ms 24372 KB n=100
11 Correct 22 ms 24372 KB n=100
12 Correct 21 ms 24372 KB n=100
13 Correct 22 ms 24372 KB n=100
14 Correct 21 ms 24372 KB n=100
15 Correct 22 ms 24372 KB n=100
16 Correct 21 ms 24372 KB n=100
17 Correct 21 ms 24372 KB n=100
18 Correct 22 ms 24372 KB n=100
19 Correct 22 ms 24372 KB n=100
20 Correct 21 ms 24372 KB n=100
21 Correct 21 ms 24372 KB n=100
22 Correct 21 ms 24372 KB n=100
23 Correct 21 ms 24372 KB n=100
24 Correct 21 ms 24372 KB n=100
25 Correct 21 ms 24372 KB n=100
26 Correct 21 ms 24372 KB n=12
27 Correct 21 ms 24392 KB n=100
28 Correct 22 ms 24504 KB n=500
29 Correct 24 ms 24516 KB n=500
30 Correct 23 ms 24572 KB n=500
31 Correct 25 ms 24584 KB n=500
32 Correct 24 ms 24596 KB n=500
33 Correct 22 ms 24608 KB n=500
34 Correct 22 ms 24752 KB n=500
35 Correct 21 ms 24752 KB n=500
36 Correct 22 ms 24752 KB n=500
37 Correct 22 ms 24752 KB n=500
38 Correct 22 ms 24752 KB n=500
39 Correct 23 ms 24752 KB n=500
40 Correct 25 ms 24796 KB n=500
41 Correct 22 ms 24796 KB n=500
42 Correct 25 ms 24796 KB n=500
43 Correct 22 ms 24796 KB n=500
44 Correct 25 ms 24796 KB n=500
45 Correct 25 ms 24808 KB n=500
46 Correct 25 ms 24808 KB n=500
47 Correct 21 ms 24864 KB n=500
48 Correct 22 ms 24880 KB n=500
49 Correct 22 ms 24892 KB n=500
50 Correct 23 ms 24908 KB n=500
51 Correct 22 ms 24920 KB n=500
52 Correct 23 ms 24936 KB n=500
53 Correct 23 ms 24956 KB n=500
54 Correct 22 ms 24972 KB n=500
55 Correct 23 ms 24984 KB n=278
56 Correct 22 ms 24992 KB n=500
57 Correct 23 ms 25008 KB n=500
58 Correct 22 ms 25100 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23888 KB n=5
2 Correct 21 ms 24048 KB n=100
3 Correct 22 ms 24048 KB n=100
4 Correct 22 ms 24152 KB n=100
5 Correct 25 ms 24152 KB n=100
6 Correct 24 ms 24152 KB n=100
7 Correct 22 ms 24176 KB n=100
8 Correct 25 ms 24372 KB n=100
9 Correct 23 ms 24372 KB n=100
10 Correct 22 ms 24372 KB n=100
11 Correct 22 ms 24372 KB n=100
12 Correct 21 ms 24372 KB n=100
13 Correct 22 ms 24372 KB n=100
14 Correct 21 ms 24372 KB n=100
15 Correct 22 ms 24372 KB n=100
16 Correct 21 ms 24372 KB n=100
17 Correct 21 ms 24372 KB n=100
18 Correct 22 ms 24372 KB n=100
19 Correct 22 ms 24372 KB n=100
20 Correct 21 ms 24372 KB n=100
21 Correct 21 ms 24372 KB n=100
22 Correct 21 ms 24372 KB n=100
23 Correct 21 ms 24372 KB n=100
24 Correct 21 ms 24372 KB n=100
25 Correct 21 ms 24372 KB n=100
26 Correct 21 ms 24372 KB n=12
27 Correct 21 ms 24392 KB n=100
28 Correct 22 ms 24504 KB n=500
29 Correct 24 ms 24516 KB n=500
30 Correct 23 ms 24572 KB n=500
31 Correct 25 ms 24584 KB n=500
32 Correct 24 ms 24596 KB n=500
33 Correct 22 ms 24608 KB n=500
34 Correct 22 ms 24752 KB n=500
35 Correct 21 ms 24752 KB n=500
36 Correct 22 ms 24752 KB n=500
37 Correct 22 ms 24752 KB n=500
38 Correct 22 ms 24752 KB n=500
39 Correct 23 ms 24752 KB n=500
40 Correct 25 ms 24796 KB n=500
41 Correct 22 ms 24796 KB n=500
42 Correct 25 ms 24796 KB n=500
43 Correct 22 ms 24796 KB n=500
44 Correct 25 ms 24796 KB n=500
45 Correct 25 ms 24808 KB n=500
46 Correct 25 ms 24808 KB n=500
47 Correct 21 ms 24864 KB n=500
48 Correct 22 ms 24880 KB n=500
49 Correct 22 ms 24892 KB n=500
50 Correct 23 ms 24908 KB n=500
51 Correct 22 ms 24920 KB n=500
52 Correct 23 ms 24936 KB n=500
53 Correct 23 ms 24956 KB n=500
54 Correct 22 ms 24972 KB n=500
55 Correct 23 ms 24984 KB n=278
56 Correct 22 ms 24992 KB n=500
57 Correct 23 ms 25008 KB n=500
58 Correct 22 ms 25100 KB n=500
59 Correct 27 ms 25288 KB n=2000
60 Correct 29 ms 25468 KB n=2000
61 Correct 28 ms 25568 KB n=2000
62 Correct 28 ms 25580 KB n=2000
63 Correct 29 ms 25636 KB n=2000
64 Correct 33 ms 25688 KB n=2000
65 Correct 33 ms 25744 KB n=2000
66 Correct 27 ms 25796 KB n=2000
67 Correct 30 ms 25796 KB n=2000
68 Correct 33 ms 25908 KB n=2000
69 Correct 26 ms 25964 KB n=2000
70 Correct 29 ms 26016 KB n=2000
71 Correct 25 ms 26068 KB n=2000
72 Correct 28 ms 26120 KB n=2000
73 Correct 25 ms 26296 KB n=2000
74 Correct 30 ms 26296 KB n=1844
75 Correct 28 ms 26296 KB n=2000
76 Correct 27 ms 26332 KB n=2000
77 Correct 26 ms 26380 KB n=2000
78 Correct 27 ms 26380 KB n=2000
79 Correct 26 ms 26380 KB n=2000
80 Correct 27 ms 26536 KB n=2000
81 Correct 27 ms 26592 KB n=2000
82 Correct 26 ms 26620 KB n=2000
83 Correct 25 ms 26668 KB n=2000
84 Correct 26 ms 26668 KB n=2000
85 Correct 26 ms 26844 KB n=2000
86 Correct 26 ms 26864 KB n=2000
87 Correct 25 ms 26920 KB n=2000
88 Correct 26 ms 26956 KB n=2000
89 Correct 26 ms 27028 KB n=2000
90 Correct 25 ms 27120 KB n=2000
91 Correct 25 ms 27136 KB n=2000

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23888 KB n=5
2 Correct 21 ms 24048 KB n=100
3 Correct 22 ms 24048 KB n=100
4 Correct 22 ms 24152 KB n=100
5 Correct 25 ms 24152 KB n=100
6 Correct 24 ms 24152 KB n=100
7 Correct 22 ms 24176 KB n=100
8 Correct 25 ms 24372 KB n=100
9 Correct 23 ms 24372 KB n=100
10 Correct 22 ms 24372 KB n=100
11 Correct 22 ms 24372 KB n=100
12 Correct 21 ms 24372 KB n=100
13 Correct 22 ms 24372 KB n=100
14 Correct 21 ms 24372 KB n=100
15 Correct 22 ms 24372 KB n=100
16 Correct 21 ms 24372 KB n=100
17 Correct 21 ms 24372 KB n=100
18 Correct 22 ms 24372 KB n=100
19 Correct 22 ms 24372 KB n=100
20 Correct 21 ms 24372 KB n=100
21 Correct 21 ms 24372 KB n=100
22 Correct 21 ms 24372 KB n=100
23 Correct 21 ms 24372 KB n=100
24 Correct 21 ms 24372 KB n=100
25 Correct 21 ms 24372 KB n=100
26 Correct 21 ms 24372 KB n=12
27 Correct 21 ms 24392 KB n=100
28 Correct 22 ms 24504 KB n=500
29 Correct 24 ms 24516 KB n=500
30 Correct 23 ms 24572 KB n=500
31 Correct 25 ms 24584 KB n=500
32 Correct 24 ms 24596 KB n=500
33 Correct 22 ms 24608 KB n=500
34 Correct 22 ms 24752 KB n=500
35 Correct 21 ms 24752 KB n=500
36 Correct 22 ms 24752 KB n=500
37 Correct 22 ms 24752 KB n=500
38 Correct 22 ms 24752 KB n=500
39 Correct 23 ms 24752 KB n=500
40 Correct 25 ms 24796 KB n=500
41 Correct 22 ms 24796 KB n=500
42 Correct 25 ms 24796 KB n=500
43 Correct 22 ms 24796 KB n=500
44 Correct 25 ms 24796 KB n=500
45 Correct 25 ms 24808 KB n=500
46 Correct 25 ms 24808 KB n=500
47 Correct 21 ms 24864 KB n=500
48 Correct 22 ms 24880 KB n=500
49 Correct 22 ms 24892 KB n=500
50 Correct 23 ms 24908 KB n=500
51 Correct 22 ms 24920 KB n=500
52 Correct 23 ms 24936 KB n=500
53 Correct 23 ms 24956 KB n=500
54 Correct 22 ms 24972 KB n=500
55 Correct 23 ms 24984 KB n=278
56 Correct 22 ms 24992 KB n=500
57 Correct 23 ms 25008 KB n=500
58 Correct 22 ms 25100 KB n=500
59 Correct 27 ms 25288 KB n=2000
60 Correct 29 ms 25468 KB n=2000
61 Correct 28 ms 25568 KB n=2000
62 Correct 28 ms 25580 KB n=2000
63 Correct 29 ms 25636 KB n=2000
64 Correct 33 ms 25688 KB n=2000
65 Correct 33 ms 25744 KB n=2000
66 Correct 27 ms 25796 KB n=2000
67 Correct 30 ms 25796 KB n=2000
68 Correct 33 ms 25908 KB n=2000
69 Correct 26 ms 25964 KB n=2000
70 Correct 29 ms 26016 KB n=2000
71 Correct 25 ms 26068 KB n=2000
72 Correct 28 ms 26120 KB n=2000
73 Correct 25 ms 26296 KB n=2000
74 Correct 30 ms 26296 KB n=1844
75 Correct 28 ms 26296 KB n=2000
76 Correct 27 ms 26332 KB n=2000
77 Correct 26 ms 26380 KB n=2000
78 Correct 27 ms 26380 KB n=2000
79 Correct 26 ms 26380 KB n=2000
80 Correct 27 ms 26536 KB n=2000
81 Correct 27 ms 26592 KB n=2000
82 Correct 26 ms 26620 KB n=2000
83 Correct 25 ms 26668 KB n=2000
84 Correct 26 ms 26668 KB n=2000
85 Correct 26 ms 26844 KB n=2000
86 Correct 26 ms 26864 KB n=2000
87 Correct 25 ms 26920 KB n=2000
88 Correct 26 ms 26956 KB n=2000
89 Correct 26 ms 27028 KB n=2000
90 Correct 25 ms 27120 KB n=2000
91 Correct 25 ms 27136 KB n=2000
92 Correct 1085 ms 75772 KB n=200000
93 Correct 1445 ms 87228 KB n=200000
94 Correct 1441 ms 98244 KB n=200000
95 Correct 1066 ms 98244 KB n=200000
96 Correct 980 ms 103972 KB n=200000
97 Correct 1876 ms 114580 KB n=200000
98 Correct 1108 ms 118304 KB n=200000
99 Correct 1368 ms 124708 KB n=200000
100 Correct 1177 ms 131908 KB n=200000
101 Correct 1457 ms 147856 KB n=200000
102 Correct 581 ms 147856 KB n=200000
103 Correct 708 ms 153716 KB n=200000
104 Correct 588 ms 160412 KB n=200000
105 Correct 606 ms 167560 KB n=200000
106 Correct 624 ms 175120 KB n=200000
107 Correct 604 ms 182296 KB n=200000
108 Correct 1204 ms 188160 KB n=200000
109 Correct 1188 ms 195048 KB n=200000
110 Correct 1155 ms 201992 KB n=200000
111 Correct 1317 ms 208296 KB n=200000
112 Correct 1434 ms 223504 KB n=200000
113 Correct 1483 ms 226512 KB n=200000
114 Correct 978 ms 229844 KB n=200000
115 Correct 1610 ms 238332 KB n=200000
116 Correct 1144 ms 244100 KB n=200000
117 Correct 1484 ms 259976 KB n=200000
118 Correct 1526 ms 261500 KB n=200000
119 Runtime error 1048 ms 263168 KB Memory limit exceeded
120 Halted 0 ms 0 KB -