oj.uz

Submission #54196

# Submission time Handle Problem Language Result Execution time Memory
54196 2018-07-02T18:34:55 Z ulna Birthday gift (IZhO18_treearray) C++11
100 / 100
 1893 ms 98516 KB 
#pragma GCC optimize ("O3")

#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[maxn];
set<int> ss[maxn];

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:57:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &x, &y);
   ~~~~~^~~~~~~~~~~~~~~~~
treearray.cpp:72:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ~~~~~^~~~~~~~~~~~~
treearray.cpp:83:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &ope);
   ~~~~~^~~~~~~~~~~~
treearray.cpp:87:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d %d", &x, &y);
    ~~~~~^~~~~~~~~~~~~~~~~
treearray.cpp:102:9: 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 24 ms 23928 KB n=5
2 Correct 21 ms 23928 KB n=100
3 Correct 21 ms 24012 KB n=100
4 Correct 21 ms 24088 KB n=100
5 Correct 22 ms 24088 KB n=100
6 Correct 27 ms 24088 KB n=100
7 Correct 22 ms 24088 KB n=100
8 Correct 21 ms 24176 KB n=100
9 Correct 24 ms 24176 KB n=100
10 Correct 27 ms 24208 KB n=100
11 Correct 26 ms 24208 KB n=100
12 Correct 27 ms 24208 KB n=100
13 Correct 22 ms 24208 KB n=100
14 Correct 26 ms 24208 KB n=100
15 Correct 27 ms 24208 KB n=100
16 Correct 21 ms 24208 KB n=100
17 Correct 21 ms 24208 KB n=100
18 Correct 24 ms 24208 KB n=100
19 Correct 22 ms 24208 KB n=100
20 Correct 21 ms 24208 KB n=100
21 Correct 21 ms 24208 KB n=100
22 Correct 22 ms 24208 KB n=100
23 Correct 22 ms 24208 KB n=100
24 Correct 22 ms 24208 KB n=100
25 Correct 22 ms 24208 KB n=100
26 Correct 22 ms 24240 KB n=12
27 Correct 22 ms 24240 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 23928 KB n=5
2 Correct 21 ms 23928 KB n=100
3 Correct 21 ms 24012 KB n=100
4 Correct 21 ms 24088 KB n=100
5 Correct 22 ms 24088 KB n=100
6 Correct 27 ms 24088 KB n=100
7 Correct 22 ms 24088 KB n=100
8 Correct 21 ms 24176 KB n=100
9 Correct 24 ms 24176 KB n=100
10 Correct 27 ms 24208 KB n=100
11 Correct 26 ms 24208 KB n=100
12 Correct 27 ms 24208 KB n=100
13 Correct 22 ms 24208 KB n=100
14 Correct 26 ms 24208 KB n=100
15 Correct 27 ms 24208 KB n=100
16 Correct 21 ms 24208 KB n=100
17 Correct 21 ms 24208 KB n=100
18 Correct 24 ms 24208 KB n=100
19 Correct 22 ms 24208 KB n=100
20 Correct 21 ms 24208 KB n=100
21 Correct 21 ms 24208 KB n=100
22 Correct 22 ms 24208 KB n=100
23 Correct 22 ms 24208 KB n=100
24 Correct 22 ms 24208 KB n=100
25 Correct 22 ms 24208 KB n=100
26 Correct 22 ms 24240 KB n=12
27 Correct 22 ms 24240 KB n=100
28 Correct 23 ms 24296 KB n=500
29 Correct 23 ms 24296 KB n=500
30 Correct 23 ms 24296 KB n=500
31 Correct 28 ms 24296 KB n=500
32 Correct 27 ms 24296 KB n=500
33 Correct 27 ms 24296 KB n=500
34 Correct 30 ms 24296 KB n=500
35 Correct 24 ms 24296 KB n=500
36 Correct 24 ms 24300 KB n=500
37 Correct 23 ms 24424 KB n=500
38 Correct 23 ms 24424 KB n=500
39 Correct 23 ms 24424 KB n=500
40 Correct 29 ms 24424 KB n=500
41 Correct 24 ms 24424 KB n=500
42 Correct 25 ms 24424 KB n=500
43 Correct 24 ms 24424 KB n=500
44 Correct 24 ms 24424 KB n=500
45 Correct 25 ms 24424 KB n=500
46 Correct 24 ms 24424 KB n=500
47 Correct 24 ms 24424 KB n=500
48 Correct 25 ms 24424 KB n=500
49 Correct 26 ms 24424 KB n=500
50 Correct 23 ms 24424 KB n=500
51 Correct 24 ms 24424 KB n=500
52 Correct 28 ms 24424 KB n=500
53 Correct 23 ms 24424 KB n=500
54 Correct 24 ms 24424 KB n=500
55 Correct 22 ms 24424 KB n=278
56 Correct 22 ms 24424 KB n=500
57 Correct 23 ms 24424 KB n=500
58 Correct 22 ms 24424 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 23928 KB n=5
2 Correct 21 ms 23928 KB n=100
3 Correct 21 ms 24012 KB n=100
4 Correct 21 ms 24088 KB n=100
5 Correct 22 ms 24088 KB n=100
6 Correct 27 ms 24088 KB n=100
7 Correct 22 ms 24088 KB n=100
8 Correct 21 ms 24176 KB n=100
9 Correct 24 ms 24176 KB n=100
10 Correct 27 ms 24208 KB n=100
11 Correct 26 ms 24208 KB n=100
12 Correct 27 ms 24208 KB n=100
13 Correct 22 ms 24208 KB n=100
14 Correct 26 ms 24208 KB n=100
15 Correct 27 ms 24208 KB n=100
16 Correct 21 ms 24208 KB n=100
17 Correct 21 ms 24208 KB n=100
18 Correct 24 ms 24208 KB n=100
19 Correct 22 ms 24208 KB n=100
20 Correct 21 ms 24208 KB n=100
21 Correct 21 ms 24208 KB n=100
22 Correct 22 ms 24208 KB n=100
23 Correct 22 ms 24208 KB n=100
24 Correct 22 ms 24208 KB n=100
25 Correct 22 ms 24208 KB n=100
26 Correct 22 ms 24240 KB n=12
27 Correct 22 ms 24240 KB n=100
28 Correct 23 ms 24296 KB n=500
29 Correct 23 ms 24296 KB n=500
30 Correct 23 ms 24296 KB n=500
31 Correct 28 ms 24296 KB n=500
32 Correct 27 ms 24296 KB n=500
33 Correct 27 ms 24296 KB n=500
34 Correct 30 ms 24296 KB n=500
35 Correct 24 ms 24296 KB n=500
36 Correct 24 ms 24300 KB n=500
37 Correct 23 ms 24424 KB n=500
38 Correct 23 ms 24424 KB n=500
39 Correct 23 ms 24424 KB n=500
40 Correct 29 ms 24424 KB n=500
41 Correct 24 ms 24424 KB n=500
42 Correct 25 ms 24424 KB n=500
43 Correct 24 ms 24424 KB n=500
44 Correct 24 ms 24424 KB n=500
45 Correct 25 ms 24424 KB n=500
46 Correct 24 ms 24424 KB n=500
47 Correct 24 ms 24424 KB n=500
48 Correct 25 ms 24424 KB n=500
49 Correct 26 ms 24424 KB n=500
50 Correct 23 ms 24424 KB n=500
51 Correct 24 ms 24424 KB n=500
52 Correct 28 ms 24424 KB n=500
53 Correct 23 ms 24424 KB n=500
54 Correct 24 ms 24424 KB n=500
55 Correct 22 ms 24424 KB n=278
56 Correct 22 ms 24424 KB n=500
57 Correct 23 ms 24424 KB n=500
58 Correct 22 ms 24424 KB n=500
59 Correct 26 ms 24556 KB n=2000
60 Correct 38 ms 24556 KB n=2000
61 Correct 26 ms 24572 KB n=2000
62 Correct 27 ms 24588 KB n=2000
63 Correct 29 ms 24588 KB n=2000
64 Correct 31 ms 24604 KB n=2000
65 Correct 26 ms 24604 KB n=2000
66 Correct 26 ms 24604 KB n=2000
67 Correct 27 ms 24604 KB n=2000
68 Correct 26 ms 24608 KB n=2000
69 Correct 25 ms 24608 KB n=2000
70 Correct 25 ms 24608 KB n=2000
71 Correct 24 ms 24608 KB n=2000
72 Correct 25 ms 24608 KB n=2000
73 Correct 26 ms 24608 KB n=2000
74 Correct 36 ms 24608 KB n=1844
75 Correct 24 ms 24732 KB n=2000
76 Correct 26 ms 24732 KB n=2000
77 Correct 26 ms 24732 KB n=2000
78 Correct 27 ms 24732 KB n=2000
79 Correct 25 ms 24732 KB n=2000
80 Correct 26 ms 24812 KB n=2000
81 Correct 26 ms 24812 KB n=2000
82 Correct 26 ms 24812 KB n=2000
83 Correct 29 ms 24812 KB n=2000
84 Correct 25 ms 24812 KB n=2000
85 Correct 26 ms 24812 KB n=2000
86 Correct 27 ms 24812 KB n=2000
87 Correct 30 ms 24812 KB n=2000
88 Correct 26 ms 24812 KB n=2000
89 Correct 27 ms 24812 KB n=2000
90 Correct 29 ms 24812 KB n=2000
91 Correct 34 ms 24812 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 23928 KB n=5
2 Correct 21 ms 23928 KB n=100
3 Correct 21 ms 24012 KB n=100
4 Correct 21 ms 24088 KB n=100
5 Correct 22 ms 24088 KB n=100
6 Correct 27 ms 24088 KB n=100
7 Correct 22 ms 24088 KB n=100
8 Correct 21 ms 24176 KB n=100
9 Correct 24 ms 24176 KB n=100
10 Correct 27 ms 24208 KB n=100
11 Correct 26 ms 24208 KB n=100
12 Correct 27 ms 24208 KB n=100
13 Correct 22 ms 24208 KB n=100
14 Correct 26 ms 24208 KB n=100
15 Correct 27 ms 24208 KB n=100
16 Correct 21 ms 24208 KB n=100
17 Correct 21 ms 24208 KB n=100
18 Correct 24 ms 24208 KB n=100
19 Correct 22 ms 24208 KB n=100
20 Correct 21 ms 24208 KB n=100
21 Correct 21 ms 24208 KB n=100
22 Correct 22 ms 24208 KB n=100
23 Correct 22 ms 24208 KB n=100
24 Correct 22 ms 24208 KB n=100
25 Correct 22 ms 24208 KB n=100
26 Correct 22 ms 24240 KB n=12
27 Correct 22 ms 24240 KB n=100
28 Correct 23 ms 24296 KB n=500
29 Correct 23 ms 24296 KB n=500
30 Correct 23 ms 24296 KB n=500
31 Correct 28 ms 24296 KB n=500
32 Correct 27 ms 24296 KB n=500
33 Correct 27 ms 24296 KB n=500
34 Correct 30 ms 24296 KB n=500
35 Correct 24 ms 24296 KB n=500
36 Correct 24 ms 24300 KB n=500
37 Correct 23 ms 24424 KB n=500
38 Correct 23 ms 24424 KB n=500
39 Correct 23 ms 24424 KB n=500
40 Correct 29 ms 24424 KB n=500
41 Correct 24 ms 24424 KB n=500
42 Correct 25 ms 24424 KB n=500
43 Correct 24 ms 24424 KB n=500
44 Correct 24 ms 24424 KB n=500
45 Correct 25 ms 24424 KB n=500
46 Correct 24 ms 24424 KB n=500
47 Correct 24 ms 24424 KB n=500
48 Correct 25 ms 24424 KB n=500
49 Correct 26 ms 24424 KB n=500
50 Correct 23 ms 24424 KB n=500
51 Correct 24 ms 24424 KB n=500
52 Correct 28 ms 24424 KB n=500
53 Correct 23 ms 24424 KB n=500
54 Correct 24 ms 24424 KB n=500
55 Correct 22 ms 24424 KB n=278
56 Correct 22 ms 24424 KB n=500
57 Correct 23 ms 24424 KB n=500
58 Correct 22 ms 24424 KB n=500
59 Correct 26 ms 24556 KB n=2000
60 Correct 38 ms 24556 KB n=2000
61 Correct 26 ms 24572 KB n=2000
62 Correct 27 ms 24588 KB n=2000
63 Correct 29 ms 24588 KB n=2000
64 Correct 31 ms 24604 KB n=2000
65 Correct 26 ms 24604 KB n=2000
66 Correct 26 ms 24604 KB n=2000
67 Correct 27 ms 24604 KB n=2000
68 Correct 26 ms 24608 KB n=2000
69 Correct 25 ms 24608 KB n=2000
70 Correct 25 ms 24608 KB n=2000
71 Correct 24 ms 24608 KB n=2000
72 Correct 25 ms 24608 KB n=2000
73 Correct 26 ms 24608 KB n=2000
74 Correct 36 ms 24608 KB n=1844
75 Correct 24 ms 24732 KB n=2000
76 Correct 26 ms 24732 KB n=2000
77 Correct 26 ms 24732 KB n=2000
78 Correct 27 ms 24732 KB n=2000
79 Correct 25 ms 24732 KB n=2000
80 Correct 26 ms 24812 KB n=2000
81 Correct 26 ms 24812 KB n=2000
82 Correct 26 ms 24812 KB n=2000
83 Correct 29 ms 24812 KB n=2000
84 Correct 25 ms 24812 KB n=2000
85 Correct 26 ms 24812 KB n=2000
86 Correct 27 ms 24812 KB n=2000
87 Correct 30 ms 24812 KB n=2000
88 Correct 26 ms 24812 KB n=2000
89 Correct 27 ms 24812 KB n=2000
90 Correct 29 ms 24812 KB n=2000
91 Correct 34 ms 24812 KB n=2000
92 Correct 1302 ms 66996 KB n=200000
93 Correct 1620 ms 69012 KB n=200000
94 Correct 1420 ms 71252 KB n=200000
95 Correct 1036 ms 71252 KB n=200000
96 Correct 1104 ms 71252 KB n=200000
97 Correct 1655 ms 71252 KB n=200000
98 Correct 1008 ms 71252 KB n=200000
99 Correct 1427 ms 71252 KB n=200000
100 Correct 1164 ms 71252 KB n=200000
101 Correct 1599 ms 72240 KB n=200000
102 Correct 598 ms 72240 KB n=200000
103 Correct 655 ms 72240 KB n=200000
104 Correct 603 ms 72240 KB n=200000
105 Correct 655 ms 72240 KB n=200000
106 Correct 717 ms 72240 KB n=200000
107 Correct 612 ms 72240 KB n=200000
108 Correct 1454 ms 72240 KB n=200000
109 Correct 1319 ms 72240 KB n=200000
110 Correct 1327 ms 72240 KB n=200000
111 Correct 1192 ms 72240 KB n=200000
112 Correct 1629 ms 72240 KB n=200000
113 Correct 1675 ms 72240 KB n=200000
114 Correct 1245 ms 72240 KB n=200000
115 Correct 1893 ms 72240 KB n=200000
116 Correct 1126 ms 72240 KB n=200000
117 Correct 1794 ms 72240 KB n=200000
118 Correct 1717 ms 72240 KB n=200000
119 Correct 1240 ms 72240 KB n=200000
120 Correct 1559 ms 81964 KB n=200000
121 Correct 1747 ms 88856 KB n=200000
122 Correct 1556 ms 96360 KB n=200000
123 Correct 580 ms 98516 KB n=200000
124 Correct 352 ms 98516 KB n=25264