oj.uz

Submission #90942

# Submission time Handle Problem Language Result Execution time Memory
90942 2018-12-25T09:14:03 Z davitmarg Birthday gift (IZhO18_treearray) C++17
30 / 100
 19 ms 5804 KB 
/*
DEATH-MATCH
Davit-Marg
*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <stack>
#include <iterator>
#include <ctype.h>
#include <stdlib.h>  
#include <fstream>  
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair
#define PB push_back
using namespace std;

int n, m, q, used[200005],d[200005], tin[200005], tout[200005],a[200005], timer;
vector<int> g[200005],ord;

int t[4 * 200005];

void build(int v,int l,int r)
{
	if (l == r)
	{
		t[v] = ord[l];
		return;
	}
	int m = (l + r) / 2;
	build(v * 2, l, m);
	build(v * 2 + 1, m + 1, r);
	if (d[t[v * 2]] <= d[t[v * 2 + 1]])
		t[v] = t[v * 2];
	else
		t[v] = t[v * 2 + 1];
}

int query(int v,int l,int r,int i,int j)
{
	int m = (l + r) / 2;
	if (l == i && r == j)
		return t[v];
	if (j <= m)
		return query(v * 2, l, m, i, j);
	else if (i >= m + 1)
		return query(v * 2 + 1, m + 1, r, i, j);
	else
	{
		int m1 = query(v * 2, l, m, i, m);
		int m2 = query(v * 2+1, m + 1, r, m + 1, j);
		if (d[m1] <= d[m2])
			return m1;
		else
			return m2;
	}
}

void dfs(int v)
{
	used[v] = 1;
	tin[v] = ord.size();
	ord.PB(v);
	for (int i = 0; i < g[v].size(); i++)
	{
		int to = g[v][i];
		if (used[to])
			continue;
		d[to] = d[v] + 1;
		dfs(to);
		ord.PB(v);
	}
	tout[v] = ord.size();
}

bool upper(int a, int b)
{
	return (tin[a] <= tin[b] && tout[a] >= tout[b]);
}

int LCA(int a,int b)
{
	if (a == b)
		return a;
	if (tin[a] > tin[b])
		swap(a,b);
	int res = query(1, 0, ord.size() - 1, tin[a], tin[b]);
	return res;
}

int main()
{
	cin >> n >> m >> q;
	if (max(q, max(n, m)) > 600)
		return 0;
	for (int i = 1; i < n; i++)
	{
		int a, b;
		cin >> a >> b;
		g[a].PB(b);
		g[b].PB(a);
	}
	dfs(1);
	build(1,0,ord.size()-1);
	for (int i = 0; i < m; i++)
		cin >> a[i];

	for (int ii = 0; ii < q; ii++)
	{
		int t;
		scanf("%d",&t);
		if (t == 1)
		{
			int p, v;
			scanf("%d%d", &p,&v);
			p--;
			a[p] = v;
		}
		else
		{
			int L, R, v,l,r;
			scanf("%d%d%d", &L, &R,&v);
			pair<int, int> ans = MP( -1,-1 );
			L--;
			R--;
			l = L;
			int lca=a[l];
			for (r = L; r <= R; r++)
			{
				if (!upper(v, a[r]))
				{
					l = r + 1;
					lca = a[l];
					continue;
				}
				lca = LCA(lca,a[r]);
				if (lca == v)
				{
					ans = MP(l+1,r+1);
					break;
				}
			}
			cout << ans.first << " " << ans.second << endl;
		}
	}


	return 0;
}
/*

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: In function 'void dfs(int)':
treearray.cpp:73:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < g[v].size(); i++)
                  ~~^~~~~~~~~~~~~
treearray.cpp: In function 'int main()':
treearray.cpp:120:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&t);
   ~~~~~^~~~~~~~~
treearray.cpp:124:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d%d", &p,&v);
    ~~~~~^~~~~~~~~~~~~~~
treearray.cpp:131:9: 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

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB n=5
2 Correct 5 ms 5108 KB n=100
3 Correct 6 ms 5128 KB n=100
4 Correct 6 ms 5128 KB n=100
5 Correct 5 ms 5128 KB n=100
6 Correct 5 ms 5344 KB n=100
7 Correct 5 ms 5344 KB n=100
8 Correct 5 ms 5344 KB n=100
9 Correct 5 ms 5352 KB n=100
10 Correct 5 ms 5352 KB n=100
11 Correct 5 ms 5352 KB n=100
12 Correct 5 ms 5352 KB n=100
13 Correct 5 ms 5352 KB n=100
14 Correct 5 ms 5352 KB n=100
15 Correct 6 ms 5352 KB n=100
16 Correct 6 ms 5372 KB n=100
17 Correct 6 ms 5372 KB n=100
18 Correct 5 ms 5372 KB n=100
19 Correct 6 ms 5372 KB n=100
20 Correct 6 ms 5372 KB n=100
21 Correct 6 ms 5372 KB n=100
22 Correct 6 ms 5372 KB n=100
23 Correct 6 ms 5400 KB n=100
24 Correct 6 ms 5400 KB n=100
25 Correct 5 ms 5400 KB n=100
26 Correct 5 ms 5400 KB n=12
27 Correct 5 ms 5400 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB n=5
2 Correct 5 ms 5108 KB n=100
3 Correct 6 ms 5128 KB n=100
4 Correct 6 ms 5128 KB n=100
5 Correct 5 ms 5128 KB n=100
6 Correct 5 ms 5344 KB n=100
7 Correct 5 ms 5344 KB n=100
8 Correct 5 ms 5344 KB n=100
9 Correct 5 ms 5352 KB n=100
10 Correct 5 ms 5352 KB n=100
11 Correct 5 ms 5352 KB n=100
12 Correct 5 ms 5352 KB n=100
13 Correct 5 ms 5352 KB n=100
14 Correct 5 ms 5352 KB n=100
15 Correct 6 ms 5352 KB n=100
16 Correct 6 ms 5372 KB n=100
17 Correct 6 ms 5372 KB n=100
18 Correct 5 ms 5372 KB n=100
19 Correct 6 ms 5372 KB n=100
20 Correct 6 ms 5372 KB n=100
21 Correct 6 ms 5372 KB n=100
22 Correct 6 ms 5372 KB n=100
23 Correct 6 ms 5400 KB n=100
24 Correct 6 ms 5400 KB n=100
25 Correct 5 ms 5400 KB n=100
26 Correct 5 ms 5400 KB n=12
27 Correct 5 ms 5400 KB n=100
28 Correct 6 ms 5412 KB n=500
29 Correct 8 ms 5424 KB n=500
30 Correct 8 ms 5468 KB n=500
31 Correct 8 ms 5484 KB n=500
32 Correct 7 ms 5500 KB n=500
33 Correct 8 ms 5512 KB n=500
34 Correct 6 ms 5528 KB n=500
35 Correct 8 ms 5528 KB n=500
36 Correct 7 ms 5528 KB n=500
37 Correct 7 ms 5560 KB n=500
38 Correct 7 ms 5560 KB n=500
39 Correct 7 ms 5560 KB n=500
40 Correct 6 ms 5560 KB n=500
41 Correct 6 ms 5576 KB n=500
42 Correct 7 ms 5592 KB n=500
43 Correct 6 ms 5604 KB n=500
44 Correct 6 ms 5616 KB n=500
45 Correct 6 ms 5628 KB n=500
46 Correct 7 ms 5640 KB n=500
47 Correct 8 ms 5656 KB n=500
48 Correct 6 ms 5656 KB n=500
49 Correct 7 ms 5728 KB n=500
50 Correct 6 ms 5728 KB n=500
51 Correct 7 ms 5728 KB n=500
52 Correct 8 ms 5728 KB n=500
53 Correct 7 ms 5744 KB n=500
54 Correct 12 ms 5760 KB n=500
55 Correct 6 ms 5772 KB n=278
56 Correct 19 ms 5780 KB n=500
57 Correct 19 ms 5796 KB n=500
58 Correct 7 ms 5804 KB n=500

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB n=5
2 Correct 5 ms 5108 KB n=100
3 Correct 6 ms 5128 KB n=100
4 Correct 6 ms 5128 KB n=100
5 Correct 5 ms 5128 KB n=100
6 Correct 5 ms 5344 KB n=100
7 Correct 5 ms 5344 KB n=100
8 Correct 5 ms 5344 KB n=100
9 Correct 5 ms 5352 KB n=100
10 Correct 5 ms 5352 KB n=100
11 Correct 5 ms 5352 KB n=100
12 Correct 5 ms 5352 KB n=100
13 Correct 5 ms 5352 KB n=100
14 Correct 5 ms 5352 KB n=100
15 Correct 6 ms 5352 KB n=100
16 Correct 6 ms 5372 KB n=100
17 Correct 6 ms 5372 KB n=100
18 Correct 5 ms 5372 KB n=100
19 Correct 6 ms 5372 KB n=100
20 Correct 6 ms 5372 KB n=100
21 Correct 6 ms 5372 KB n=100
22 Correct 6 ms 5372 KB n=100
23 Correct 6 ms 5400 KB n=100
24 Correct 6 ms 5400 KB n=100
25 Correct 5 ms 5400 KB n=100
26 Correct 5 ms 5400 KB n=12
27 Correct 5 ms 5400 KB n=100
28 Correct 6 ms 5412 KB n=500
29 Correct 8 ms 5424 KB n=500
30 Correct 8 ms 5468 KB n=500
31 Correct 8 ms 5484 KB n=500
32 Correct 7 ms 5500 KB n=500
33 Correct 8 ms 5512 KB n=500
34 Correct 6 ms 5528 KB n=500
35 Correct 8 ms 5528 KB n=500
36 Correct 7 ms 5528 KB n=500
37 Correct 7 ms 5560 KB n=500
38 Correct 7 ms 5560 KB n=500
39 Correct 7 ms 5560 KB n=500
40 Correct 6 ms 5560 KB n=500
41 Correct 6 ms 5576 KB n=500
42 Correct 7 ms 5592 KB n=500
43 Correct 6 ms 5604 KB n=500
44 Correct 6 ms 5616 KB n=500
45 Correct 6 ms 5628 KB n=500
46 Correct 7 ms 5640 KB n=500
47 Correct 8 ms 5656 KB n=500
48 Correct 6 ms 5656 KB n=500
49 Correct 7 ms 5728 KB n=500
50 Correct 6 ms 5728 KB n=500
51 Correct 7 ms 5728 KB n=500
52 Correct 8 ms 5728 KB n=500
53 Correct 7 ms 5744 KB n=500
54 Correct 12 ms 5760 KB n=500
55 Correct 6 ms 5772 KB n=278
56 Correct 19 ms 5780 KB n=500
57 Correct 19 ms 5796 KB n=500
58 Correct 7 ms 5804 KB n=500
59 Incorrect 5 ms 5804 KB Unexpected end of file - int32 expected
60 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 4984 KB n=5
2 Correct 5 ms 5108 KB n=100
3 Correct 6 ms 5128 KB n=100
4 Correct 6 ms 5128 KB n=100
5 Correct 5 ms 5128 KB n=100
6 Correct 5 ms 5344 KB n=100
7 Correct 5 ms 5344 KB n=100
8 Correct 5 ms 5344 KB n=100
9 Correct 5 ms 5352 KB n=100
10 Correct 5 ms 5352 KB n=100
11 Correct 5 ms 5352 KB n=100
12 Correct 5 ms 5352 KB n=100
13 Correct 5 ms 5352 KB n=100
14 Correct 5 ms 5352 KB n=100
15 Correct 6 ms 5352 KB n=100
16 Correct 6 ms 5372 KB n=100
17 Correct 6 ms 5372 KB n=100
18 Correct 5 ms 5372 KB n=100
19 Correct 6 ms 5372 KB n=100
20 Correct 6 ms 5372 KB n=100
21 Correct 6 ms 5372 KB n=100
22 Correct 6 ms 5372 KB n=100
23 Correct 6 ms 5400 KB n=100
24 Correct 6 ms 5400 KB n=100
25 Correct 5 ms 5400 KB n=100
26 Correct 5 ms 5400 KB n=12
27 Correct 5 ms 5400 KB n=100
28 Correct 6 ms 5412 KB n=500
29 Correct 8 ms 5424 KB n=500
30 Correct 8 ms 5468 KB n=500
31 Correct 8 ms 5484 KB n=500
32 Correct 7 ms 5500 KB n=500
33 Correct 8 ms 5512 KB n=500
34 Correct 6 ms 5528 KB n=500
35 Correct 8 ms 5528 KB n=500
36 Correct 7 ms 5528 KB n=500
37 Correct 7 ms 5560 KB n=500
38 Correct 7 ms 5560 KB n=500
39 Correct 7 ms 5560 KB n=500
40 Correct 6 ms 5560 KB n=500
41 Correct 6 ms 5576 KB n=500
42 Correct 7 ms 5592 KB n=500
43 Correct 6 ms 5604 KB n=500
44 Correct 6 ms 5616 KB n=500
45 Correct 6 ms 5628 KB n=500
46 Correct 7 ms 5640 KB n=500
47 Correct 8 ms 5656 KB n=500
48 Correct 6 ms 5656 KB n=500
49 Correct 7 ms 5728 KB n=500
50 Correct 6 ms 5728 KB n=500
51 Correct 7 ms 5728 KB n=500
52 Correct 8 ms 5728 KB n=500
53 Correct 7 ms 5744 KB n=500
54 Correct 12 ms 5760 KB n=500
55 Correct 6 ms 5772 KB n=278
56 Correct 19 ms 5780 KB n=500
57 Correct 19 ms 5796 KB n=500
58 Correct 7 ms 5804 KB n=500
59 Incorrect 5 ms 5804 KB Unexpected end of file - int32 expected
60 Halted 0 ms 0 KB -