oj.uz

Submission #93207

# Submission time Handle Problem Language Result Execution time Memory
93207 2019-01-07T09:07:26 Z antimirage Birthday gift (IZhO18_treearray) C++14
100 / 100
 2134 ms 65436 KB 
#include <bits/stdc++.h>
 
#define fr first
#define sc second
#define mk make_pair
#define pb emplace_back
#define all(s) s.begin(), s.end()
 
using namespace std;

const int N = 2e5 + 5;

int n, m, q, x, y, up[20][N], h[N], a[N], type, l, r;

vector < vector <int> > g; 

void dfs (int v, int p = 0)
{
	h[v] = h[p] + 1;
	
	up[0][v] = p;
	for (int i = 1; i < 20; i++)
		up[i][v] = up[i - 1][ up[i - 1][v] ];
		
	for (auto to : g[v])
	{
		if (to == p) continue;
		dfs(to, v);
	}
}
int lca (int a, int b)
{
	if(h[a] > h[b]) swap(a, b);
	
	int cnt = h[b] - h[a];
	
	for (int i = 19; i >= 0; i--)
	{
		if (cnt & (1 << i) )
			b = up[i][b];
	}
	if (a == b) return a;
	
	assert( h[a] == h[b] );
	
	for (int i = 19; i >= 0; i--)
	{
		if (up[i][a] != up[i][b])
			a = up[i][a], b = up[i][b];
	}
	return up[0][a];
}
set < pair <int, int> > st, st2;

main() 
{
	cin >> n >> m >> q;
	g.resize(n + 1);
	
	for (int i = 1; i < n; i++)
	{
		scanf("%d%d", &x, &y);
		g[x].pb(y);
		g[y].pb(x);
	}
	dfs(1);
	
	for (int i = 1; i <= m; i++)
	{
		scanf("%d", &a[i]);
		if (i > 1)
			st.insert( mk( lca( a[i - 1], a[i] ), i - 1 ) );
			
		st2.insert( mk(a[i], i) );
	}
	while (q--)
	{
		scanf("%d%d%d", &type, &l, &r);
		
		if (type == 1){
			st2.erase( mk(a[l], l) );
			if (l > 1)
				st.erase( mk( lca( a[l - 1], a[l] ), l - 1 ) );
			if (l < m)
				st.erase( mk( lca( a[l], a[l + 1] ), l ) );
			a[l] = r;
			if (l > 1)
				st.insert( mk( lca( a[l - 1], a[l] ), l - 1 ) );
			if (l < m)
				st.insert( mk( lca( a[l], a[l + 1] ), l ) );
			st2.insert( mk(a[l], l) );
		}
		else{
			scanf("%d", &x);
			auto it = st2.lower_bound( mk(x, l) );
			if ( it != st2.end() && it->fr == x && it->sc <= r )
				printf("%d %d\n", it->sc, it->sc);
			else
			{
				auto it = st.lower_bound( mk( x, l ) );
				if ( it != st.end() && it->fr == x && it->sc + 1 <= r )
					printf("%d %d\n", it->sc, it->sc + 1);
				else
					printf("-1 -1\n");
			}
		}
	}
}
/**
5 4 4
1 2
3 1
3 4
5 3
4 5 2 3
2 1 3 1
1 3 5
2 3 4 5
2 1 3 1
**/

Compilation message

treearray.cpp:55:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() 
      ^
treearray.cpp: In function 'int main()':
treearray.cpp:62:8: 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:78:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &type, &l, &r);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
treearray.cpp:94:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d", &x);
    ~~~~~^~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=5
2 Correct 2 ms 504 KB n=100
3 Correct 2 ms 504 KB n=100
4 Correct 2 ms 504 KB n=100
5 Correct 2 ms 508 KB n=100
6 Correct 2 ms 504 KB n=100
7 Correct 2 ms 504 KB n=100
8 Correct 2 ms 504 KB n=100
9 Correct 2 ms 508 KB n=100
10 Correct 2 ms 504 KB n=100
11 Correct 2 ms 504 KB n=100
12 Correct 2 ms 504 KB n=100
13 Correct 2 ms 504 KB n=100
14 Correct 2 ms 508 KB n=100
15 Correct 2 ms 504 KB n=100
16 Correct 2 ms 504 KB n=100
17 Correct 2 ms 504 KB n=100
18 Correct 2 ms 504 KB n=100
19 Correct 2 ms 504 KB n=100
20 Correct 2 ms 504 KB n=100
21 Correct 2 ms 504 KB n=100
22 Correct 2 ms 504 KB n=100
23 Correct 2 ms 504 KB n=100
24 Correct 2 ms 504 KB n=100
25 Correct 2 ms 504 KB n=100
26 Correct 2 ms 376 KB n=12
27 Correct 2 ms 504 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=5
2 Correct 2 ms 504 KB n=100
3 Correct 2 ms 504 KB n=100
4 Correct 2 ms 504 KB n=100
5 Correct 2 ms 508 KB n=100
6 Correct 2 ms 504 KB n=100
7 Correct 2 ms 504 KB n=100
8 Correct 2 ms 504 KB n=100
9 Correct 2 ms 508 KB n=100
10 Correct 2 ms 504 KB n=100
11 Correct 2 ms 504 KB n=100
12 Correct 2 ms 504 KB n=100
13 Correct 2 ms 504 KB n=100
14 Correct 2 ms 508 KB n=100
15 Correct 2 ms 504 KB n=100
16 Correct 2 ms 504 KB n=100
17 Correct 2 ms 504 KB n=100
18 Correct 2 ms 504 KB n=100
19 Correct 2 ms 504 KB n=100
20 Correct 2 ms 504 KB n=100
21 Correct 2 ms 504 KB n=100
22 Correct 2 ms 504 KB n=100
23 Correct 2 ms 504 KB n=100
24 Correct 2 ms 504 KB n=100
25 Correct 2 ms 504 KB n=100
26 Correct 2 ms 376 KB n=12
27 Correct 2 ms 504 KB n=100
28 Correct 3 ms 632 KB n=500
29 Correct 3 ms 632 KB n=500
30 Correct 3 ms 632 KB n=500
31 Correct 3 ms 632 KB n=500
32 Correct 3 ms 632 KB n=500
33 Correct 3 ms 504 KB n=500
34 Correct 2 ms 504 KB n=500
35 Correct 3 ms 632 KB n=500
36 Correct 2 ms 504 KB n=500
37 Correct 2 ms 632 KB n=500
38 Correct 2 ms 632 KB n=500
39 Correct 2 ms 636 KB n=500
40 Correct 2 ms 504 KB n=500
41 Correct 2 ms 644 KB n=500
42 Correct 3 ms 632 KB n=500
43 Correct 3 ms 676 KB n=500
44 Correct 5 ms 632 KB n=500
45 Correct 3 ms 632 KB n=500
46 Correct 3 ms 632 KB n=500
47 Correct 3 ms 608 KB n=500
48 Correct 2 ms 632 KB n=500
49 Correct 3 ms 632 KB n=500
50 Correct 3 ms 632 KB n=500
51 Correct 3 ms 504 KB n=500
52 Correct 3 ms 632 KB n=500
53 Correct 3 ms 632 KB n=500
54 Correct 3 ms 548 KB n=500
55 Correct 2 ms 504 KB n=278
56 Correct 3 ms 632 KB n=500
57 Correct 3 ms 604 KB n=500
58 Correct 3 ms 504 KB n=500

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=5
2 Correct 2 ms 504 KB n=100
3 Correct 2 ms 504 KB n=100
4 Correct 2 ms 504 KB n=100
5 Correct 2 ms 508 KB n=100
6 Correct 2 ms 504 KB n=100
7 Correct 2 ms 504 KB n=100
8 Correct 2 ms 504 KB n=100
9 Correct 2 ms 508 KB n=100
10 Correct 2 ms 504 KB n=100
11 Correct 2 ms 504 KB n=100
12 Correct 2 ms 504 KB n=100
13 Correct 2 ms 504 KB n=100
14 Correct 2 ms 508 KB n=100
15 Correct 2 ms 504 KB n=100
16 Correct 2 ms 504 KB n=100
17 Correct 2 ms 504 KB n=100
18 Correct 2 ms 504 KB n=100
19 Correct 2 ms 504 KB n=100
20 Correct 2 ms 504 KB n=100
21 Correct 2 ms 504 KB n=100
22 Correct 2 ms 504 KB n=100
23 Correct 2 ms 504 KB n=100
24 Correct 2 ms 504 KB n=100
25 Correct 2 ms 504 KB n=100
26 Correct 2 ms 376 KB n=12
27 Correct 2 ms 504 KB n=100
28 Correct 3 ms 632 KB n=500
29 Correct 3 ms 632 KB n=500
30 Correct 3 ms 632 KB n=500
31 Correct 3 ms 632 KB n=500
32 Correct 3 ms 632 KB n=500
33 Correct 3 ms 504 KB n=500
34 Correct 2 ms 504 KB n=500
35 Correct 3 ms 632 KB n=500
36 Correct 2 ms 504 KB n=500
37 Correct 2 ms 632 KB n=500
38 Correct 2 ms 632 KB n=500
39 Correct 2 ms 636 KB n=500
40 Correct 2 ms 504 KB n=500
41 Correct 2 ms 644 KB n=500
42 Correct 3 ms 632 KB n=500
43 Correct 3 ms 676 KB n=500
44 Correct 5 ms 632 KB n=500
45 Correct 3 ms 632 KB n=500
46 Correct 3 ms 632 KB n=500
47 Correct 3 ms 608 KB n=500
48 Correct 2 ms 632 KB n=500
49 Correct 3 ms 632 KB n=500
50 Correct 3 ms 632 KB n=500
51 Correct 3 ms 504 KB n=500
52 Correct 3 ms 632 KB n=500
53 Correct 3 ms 632 KB n=500
54 Correct 3 ms 548 KB n=500
55 Correct 2 ms 504 KB n=278
56 Correct 3 ms 632 KB n=500
57 Correct 3 ms 604 KB n=500
58 Correct 3 ms 504 KB n=500
59 Correct 6 ms 1016 KB n=2000
60 Correct 6 ms 1016 KB n=2000
61 Correct 6 ms 1016 KB n=2000
62 Correct 7 ms 1016 KB n=2000
63 Correct 6 ms 1016 KB n=2000
64 Correct 7 ms 1016 KB n=2000
65 Correct 6 ms 1016 KB n=2000
66 Correct 6 ms 1016 KB n=2000
67 Correct 7 ms 1016 KB n=2000
68 Correct 6 ms 1016 KB n=2000
69 Correct 5 ms 1016 KB n=2000
70 Correct 5 ms 1016 KB n=2000
71 Correct 5 ms 1016 KB n=2000
72 Correct 5 ms 1016 KB n=2000
73 Correct 5 ms 1016 KB n=2000
74 Correct 6 ms 1016 KB n=1844
75 Correct 5 ms 1016 KB n=2000
76 Correct 7 ms 1012 KB n=2000
77 Correct 7 ms 1016 KB n=2000
78 Correct 6 ms 1016 KB n=2000
79 Correct 6 ms 1016 KB n=2000
80 Correct 6 ms 1016 KB n=2000
81 Correct 7 ms 1016 KB n=2000
82 Correct 6 ms 888 KB n=2000
83 Correct 6 ms 1016 KB n=2000
84 Correct 6 ms 1016 KB n=2000
85 Correct 7 ms 1020 KB n=2000
86 Correct 7 ms 956 KB n=2000
87 Correct 7 ms 1016 KB n=2000
88 Correct 6 ms 1016 KB n=2000
89 Correct 6 ms 1016 KB n=2000
90 Correct 6 ms 988 KB n=2000
91 Correct 5 ms 1016 KB n=2000

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=5
2 Correct 2 ms 504 KB n=100
3 Correct 2 ms 504 KB n=100
4 Correct 2 ms 504 KB n=100
5 Correct 2 ms 508 KB n=100
6 Correct 2 ms 504 KB n=100
7 Correct 2 ms 504 KB n=100
8 Correct 2 ms 504 KB n=100
9 Correct 2 ms 508 KB n=100
10 Correct 2 ms 504 KB n=100
11 Correct 2 ms 504 KB n=100
12 Correct 2 ms 504 KB n=100
13 Correct 2 ms 504 KB n=100
14 Correct 2 ms 508 KB n=100
15 Correct 2 ms 504 KB n=100
16 Correct 2 ms 504 KB n=100
17 Correct 2 ms 504 KB n=100
18 Correct 2 ms 504 KB n=100
19 Correct 2 ms 504 KB n=100
20 Correct 2 ms 504 KB n=100
21 Correct 2 ms 504 KB n=100
22 Correct 2 ms 504 KB n=100
23 Correct 2 ms 504 KB n=100
24 Correct 2 ms 504 KB n=100
25 Correct 2 ms 504 KB n=100
26 Correct 2 ms 376 KB n=12
27 Correct 2 ms 504 KB n=100
28 Correct 3 ms 632 KB n=500
29 Correct 3 ms 632 KB n=500
30 Correct 3 ms 632 KB n=500
31 Correct 3 ms 632 KB n=500
32 Correct 3 ms 632 KB n=500
33 Correct 3 ms 504 KB n=500
34 Correct 2 ms 504 KB n=500
35 Correct 3 ms 632 KB n=500
36 Correct 2 ms 504 KB n=500
37 Correct 2 ms 632 KB n=500
38 Correct 2 ms 632 KB n=500
39 Correct 2 ms 636 KB n=500
40 Correct 2 ms 504 KB n=500
41 Correct 2 ms 644 KB n=500
42 Correct 3 ms 632 KB n=500
43 Correct 3 ms 676 KB n=500
44 Correct 5 ms 632 KB n=500
45 Correct 3 ms 632 KB n=500
46 Correct 3 ms 632 KB n=500
47 Correct 3 ms 608 KB n=500
48 Correct 2 ms 632 KB n=500
49 Correct 3 ms 632 KB n=500
50 Correct 3 ms 632 KB n=500
51 Correct 3 ms 504 KB n=500
52 Correct 3 ms 632 KB n=500
53 Correct 3 ms 632 KB n=500
54 Correct 3 ms 548 KB n=500
55 Correct 2 ms 504 KB n=278
56 Correct 3 ms 632 KB n=500
57 Correct 3 ms 604 KB n=500
58 Correct 3 ms 504 KB n=500
59 Correct 6 ms 1016 KB n=2000
60 Correct 6 ms 1016 KB n=2000
61 Correct 6 ms 1016 KB n=2000
62 Correct 7 ms 1016 KB n=2000
63 Correct 6 ms 1016 KB n=2000
64 Correct 7 ms 1016 KB n=2000
65 Correct 6 ms 1016 KB n=2000
66 Correct 6 ms 1016 KB n=2000
67 Correct 7 ms 1016 KB n=2000
68 Correct 6 ms 1016 KB n=2000
69 Correct 5 ms 1016 KB n=2000
70 Correct 5 ms 1016 KB n=2000
71 Correct 5 ms 1016 KB n=2000
72 Correct 5 ms 1016 KB n=2000
73 Correct 5 ms 1016 KB n=2000
74 Correct 6 ms 1016 KB n=1844
75 Correct 5 ms 1016 KB n=2000
76 Correct 7 ms 1012 KB n=2000
77 Correct 7 ms 1016 KB n=2000
78 Correct 6 ms 1016 KB n=2000
79 Correct 6 ms 1016 KB n=2000
80 Correct 6 ms 1016 KB n=2000
81 Correct 7 ms 1016 KB n=2000
82 Correct 6 ms 888 KB n=2000
83 Correct 6 ms 1016 KB n=2000
84 Correct 6 ms 1016 KB n=2000
85 Correct 7 ms 1020 KB n=2000
86 Correct 7 ms 956 KB n=2000
87 Correct 7 ms 1016 KB n=2000
88 Correct 6 ms 1016 KB n=2000
89 Correct 6 ms 1016 KB n=2000
90 Correct 6 ms 988 KB n=2000
91 Correct 5 ms 1016 KB n=2000
92 Correct 1314 ms 55768 KB n=200000
93 Correct 1955 ms 60940 KB n=200000
94 Correct 1916 ms 64040 KB n=200000
95 Correct 1489 ms 55788 KB n=200000
96 Correct 1223 ms 55736 KB n=200000
97 Correct 2134 ms 59836 KB n=200000
98 Correct 1504 ms 55672 KB n=200000
99 Correct 1711 ms 55856 KB n=200000
100 Correct 1598 ms 55704 KB n=200000
101 Correct 2033 ms 65436 KB n=200000
102 Correct 860 ms 56820 KB n=200000
103 Correct 795 ms 56796 KB n=200000
104 Correct 662 ms 56908 KB n=200000
105 Correct 748 ms 57208 KB n=200000
106 Correct 756 ms 57300 KB n=200000
107 Correct 810 ms 57076 KB n=200000
108 Correct 1372 ms 55608 KB n=200000
109 Correct 1455 ms 55728 KB n=200000
110 Correct 1365 ms 55896 KB n=200000
111 Correct 1196 ms 55224 KB n=200000
112 Correct 1868 ms 64296 KB n=200000
113 Correct 1820 ms 59772 KB n=200000
114 Correct 1296 ms 55172 KB n=200000
115 Correct 1898 ms 57668 KB n=200000
116 Correct 1363 ms 55968 KB n=200000
117 Correct 1724 ms 64724 KB n=200000
118 Correct 1967 ms 58732 KB n=200000
119 Correct 1442 ms 55836 KB n=200000
120 Correct 1714 ms 64352 KB n=200000
121 Correct 1555 ms 64392 KB n=200000
122 Correct 1884 ms 64604 KB n=200000
123 Correct 831 ms 56952 KB n=200000
124 Correct 353 ms 16000 KB n=25264