oj.uz

Submission #865075

# Submission time Handle Problem Language Result Execution time Memory
865075 2023-10-24T05:17:35 Z vjudge1 Birthday gift (IZhO18_treearray) C++17
30 / 100
 4000 ms 9024 KB 
#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <fstream>
#include <unordered_map>
using namespace std;

typedef long long ll;
typedef long double ld;

#define all(x) x.begin(),x.end()
#define pb push_back
#define ent "\n"

const int maxn = (int)2e5 + 13;
const ll inf = (long long)1e18 + 20;
const int mod = (int)1e9 + 7;

int n,m,q;
int a[maxn];
int up[maxn][12];
int sz[maxn];
int b[maxn];
vector<int>g[maxn];

void calc(int v,int p ){
	for(int to : g[v]){
		if(to != p){
			up[to][0] = v;
			sz[to] = sz[v] + 1;
			calc(to,v); 
		}
	}
}

int lca(int x,int y){
	if(sz[x] > sz[y])swap(x,y);
	int dif = sz[y] - sz[x];
	for(int i = 0 ; i <= 11 ; i ++){
		if((dif >> i)&1){
			y = up[y][i];
		}
	}
	if(x == y)return x;
	for(int i = 11 ; i >= 0 ; i --){
		if(up[x][i]!=up[y][i] && min(up[x][i],up[y][i]) > 0){
			x = up[x][i];
			y = up[y][i];
		}
	}
	return up[x][0];
}

void solve(){
	cin >> n >> m >> q;
	for(int i = 1 ; i < n ; i ++){
		int x,y;cin >> x >> y;
		g[x].pb(y);
		g[y].pb(x);
	}
	for(int i = 1 ; i <= m ; i ++){
		cin >> a[i];
	}
	calc(1,0);
	for(int i = 1 ; i <= 11 ; i ++){
		for(int j = 1 ; j <= n ; j ++){
			up[j][i] = up[up[j][i - 1]][i - 1];
		}
	}
	while(q--){
		int tp;cin >> tp;
		if(tp == 2){
			int l,r,v;cin >> l >> r >> v;
			int lc,ok = 0;
			for(int i = l ; i <= r ; i ++){
				for(int j = i ; j <= r ; j ++){
					if(i == j){
						lc = a[i];
					}
					lc = lca(lc,a[j]);
					if(lc == v){
						cout << i << ' ' << j << ent;
						ok = 1;
						break;
					}
				}
				if(ok)break;
			}
			if(!ok){
				cout << "-1 -1\n";
			}
		}
		else{
			int pos,v;cin >> pos >> v;
			//mp[a[pos]] = v;
			a[pos] = v;

		}
	}
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t --){
		solve();
	}
	return 0;
}

Compilation message

treearray.cpp: In function 'void solve()':
treearray.cpp:101:14: warning: 'lc' may be used uninitialized in this function [-Wmaybe-uninitialized]
  101 |      lc = lca(lc,a[j]);
      |           ~~~^~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB n=5
2 Correct 2 ms 6748 KB n=100
3 Correct 2 ms 6744 KB n=100
4 Correct 2 ms 6748 KB n=100
5 Correct 2 ms 6748 KB n=100
6 Correct 7 ms 6748 KB n=100
7 Correct 8 ms 7000 KB n=100
8 Correct 2 ms 6744 KB n=100
9 Correct 2 ms 6748 KB n=100
10 Correct 4 ms 6748 KB n=100
11 Correct 4 ms 6748 KB n=100
12 Correct 1 ms 6748 KB n=100
13 Correct 1 ms 6748 KB n=100
14 Correct 1 ms 6744 KB n=100
15 Correct 2 ms 6748 KB n=100
16 Correct 1 ms 6748 KB n=100
17 Correct 2 ms 6748 KB n=100
18 Correct 2 ms 6744 KB n=100
19 Correct 1 ms 6748 KB n=100
20 Correct 2 ms 6748 KB n=100
21 Correct 2 ms 6748 KB n=100
22 Correct 1 ms 6748 KB n=100
23 Correct 3 ms 6760 KB n=100
24 Correct 3 ms 6748 KB n=100
25 Correct 2 ms 6748 KB n=100
26 Correct 1 ms 6744 KB n=12
27 Correct 4 ms 6748 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB n=5
2 Correct 2 ms 6748 KB n=100
3 Correct 2 ms 6744 KB n=100
4 Correct 2 ms 6748 KB n=100
5 Correct 2 ms 6748 KB n=100
6 Correct 7 ms 6748 KB n=100
7 Correct 8 ms 7000 KB n=100
8 Correct 2 ms 6744 KB n=100
9 Correct 2 ms 6748 KB n=100
10 Correct 4 ms 6748 KB n=100
11 Correct 4 ms 6748 KB n=100
12 Correct 1 ms 6748 KB n=100
13 Correct 1 ms 6748 KB n=100
14 Correct 1 ms 6744 KB n=100
15 Correct 2 ms 6748 KB n=100
16 Correct 1 ms 6748 KB n=100
17 Correct 2 ms 6748 KB n=100
18 Correct 2 ms 6744 KB n=100
19 Correct 1 ms 6748 KB n=100
20 Correct 2 ms 6748 KB n=100
21 Correct 2 ms 6748 KB n=100
22 Correct 1 ms 6748 KB n=100
23 Correct 3 ms 6760 KB n=100
24 Correct 3 ms 6748 KB n=100
25 Correct 2 ms 6748 KB n=100
26 Correct 1 ms 6744 KB n=12
27 Correct 4 ms 6748 KB n=100
28 Correct 2 ms 6760 KB n=500
29 Correct 92 ms 6748 KB n=500
30 Correct 61 ms 6744 KB n=500
31 Correct 71 ms 6816 KB n=500
32 Correct 4 ms 6748 KB n=500
33 Correct 54 ms 6748 KB n=500
34 Correct 2 ms 6748 KB n=500
35 Correct 74 ms 6748 KB n=500
36 Correct 821 ms 6808 KB n=500
37 Correct 817 ms 6996 KB n=500
38 Correct 798 ms 6796 KB n=500
39 Correct 86 ms 6744 KB n=500
40 Correct 79 ms 6748 KB n=500
41 Correct 78 ms 6804 KB n=500
42 Correct 398 ms 6796 KB n=500
43 Correct 395 ms 6992 KB n=500
44 Correct 390 ms 6800 KB n=500
45 Correct 2 ms 6748 KB n=500
46 Correct 79 ms 6748 KB n=500
47 Correct 67 ms 6816 KB n=500
48 Correct 1 ms 6744 KB n=500
49 Correct 63 ms 6744 KB n=500
50 Correct 60 ms 6744 KB n=500
51 Correct 107 ms 6812 KB n=500
52 Correct 142 ms 6828 KB n=500
53 Correct 104 ms 6748 KB n=500
54 Correct 53 ms 6744 KB n=500
55 Correct 14 ms 6744 KB n=278
56 Correct 514 ms 6828 KB n=500
57 Correct 525 ms 6748 KB n=500
58 Correct 305 ms 6800 KB n=500

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB n=5
2 Correct 2 ms 6748 KB n=100
3 Correct 2 ms 6744 KB n=100
4 Correct 2 ms 6748 KB n=100
5 Correct 2 ms 6748 KB n=100
6 Correct 7 ms 6748 KB n=100
7 Correct 8 ms 7000 KB n=100
8 Correct 2 ms 6744 KB n=100
9 Correct 2 ms 6748 KB n=100
10 Correct 4 ms 6748 KB n=100
11 Correct 4 ms 6748 KB n=100
12 Correct 1 ms 6748 KB n=100
13 Correct 1 ms 6748 KB n=100
14 Correct 1 ms 6744 KB n=100
15 Correct 2 ms 6748 KB n=100
16 Correct 1 ms 6748 KB n=100
17 Correct 2 ms 6748 KB n=100
18 Correct 2 ms 6744 KB n=100
19 Correct 1 ms 6748 KB n=100
20 Correct 2 ms 6748 KB n=100
21 Correct 2 ms 6748 KB n=100
22 Correct 1 ms 6748 KB n=100
23 Correct 3 ms 6760 KB n=100
24 Correct 3 ms 6748 KB n=100
25 Correct 2 ms 6748 KB n=100
26 Correct 1 ms 6744 KB n=12
27 Correct 4 ms 6748 KB n=100
28 Correct 2 ms 6760 KB n=500
29 Correct 92 ms 6748 KB n=500
30 Correct 61 ms 6744 KB n=500
31 Correct 71 ms 6816 KB n=500
32 Correct 4 ms 6748 KB n=500
33 Correct 54 ms 6748 KB n=500
34 Correct 2 ms 6748 KB n=500
35 Correct 74 ms 6748 KB n=500
36 Correct 821 ms 6808 KB n=500
37 Correct 817 ms 6996 KB n=500
38 Correct 798 ms 6796 KB n=500
39 Correct 86 ms 6744 KB n=500
40 Correct 79 ms 6748 KB n=500
41 Correct 78 ms 6804 KB n=500
42 Correct 398 ms 6796 KB n=500
43 Correct 395 ms 6992 KB n=500
44 Correct 390 ms 6800 KB n=500
45 Correct 2 ms 6748 KB n=500
46 Correct 79 ms 6748 KB n=500
47 Correct 67 ms 6816 KB n=500
48 Correct 1 ms 6744 KB n=500
49 Correct 63 ms 6744 KB n=500
50 Correct 60 ms 6744 KB n=500
51 Correct 107 ms 6812 KB n=500
52 Correct 142 ms 6828 KB n=500
53 Correct 104 ms 6748 KB n=500
54 Correct 53 ms 6744 KB n=500
55 Correct 14 ms 6744 KB n=278
56 Correct 514 ms 6828 KB n=500
57 Correct 525 ms 6748 KB n=500
58 Correct 305 ms 6800 KB n=500
59 Correct 42 ms 8916 KB n=2000
60 Execution timed out 4045 ms 9024 KB Time limit exceeded
61 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB n=5
2 Correct 2 ms 6748 KB n=100
3 Correct 2 ms 6744 KB n=100
4 Correct 2 ms 6748 KB n=100
5 Correct 2 ms 6748 KB n=100
6 Correct 7 ms 6748 KB n=100
7 Correct 8 ms 7000 KB n=100
8 Correct 2 ms 6744 KB n=100
9 Correct 2 ms 6748 KB n=100
10 Correct 4 ms 6748 KB n=100
11 Correct 4 ms 6748 KB n=100
12 Correct 1 ms 6748 KB n=100
13 Correct 1 ms 6748 KB n=100
14 Correct 1 ms 6744 KB n=100
15 Correct 2 ms 6748 KB n=100
16 Correct 1 ms 6748 KB n=100
17 Correct 2 ms 6748 KB n=100
18 Correct 2 ms 6744 KB n=100
19 Correct 1 ms 6748 KB n=100
20 Correct 2 ms 6748 KB n=100
21 Correct 2 ms 6748 KB n=100
22 Correct 1 ms 6748 KB n=100
23 Correct 3 ms 6760 KB n=100
24 Correct 3 ms 6748 KB n=100
25 Correct 2 ms 6748 KB n=100
26 Correct 1 ms 6744 KB n=12
27 Correct 4 ms 6748 KB n=100
28 Correct 2 ms 6760 KB n=500
29 Correct 92 ms 6748 KB n=500
30 Correct 61 ms 6744 KB n=500
31 Correct 71 ms 6816 KB n=500
32 Correct 4 ms 6748 KB n=500
33 Correct 54 ms 6748 KB n=500
34 Correct 2 ms 6748 KB n=500
35 Correct 74 ms 6748 KB n=500
36 Correct 821 ms 6808 KB n=500
37 Correct 817 ms 6996 KB n=500
38 Correct 798 ms 6796 KB n=500
39 Correct 86 ms 6744 KB n=500
40 Correct 79 ms 6748 KB n=500
41 Correct 78 ms 6804 KB n=500
42 Correct 398 ms 6796 KB n=500
43 Correct 395 ms 6992 KB n=500
44 Correct 390 ms 6800 KB n=500
45 Correct 2 ms 6748 KB n=500
46 Correct 79 ms 6748 KB n=500
47 Correct 67 ms 6816 KB n=500
48 Correct 1 ms 6744 KB n=500
49 Correct 63 ms 6744 KB n=500
50 Correct 60 ms 6744 KB n=500
51 Correct 107 ms 6812 KB n=500
52 Correct 142 ms 6828 KB n=500
53 Correct 104 ms 6748 KB n=500
54 Correct 53 ms 6744 KB n=500
55 Correct 14 ms 6744 KB n=278
56 Correct 514 ms 6828 KB n=500
57 Correct 525 ms 6748 KB n=500
58 Correct 305 ms 6800 KB n=500
59 Correct 42 ms 8916 KB n=2000
60 Execution timed out 4045 ms 9024 KB Time limit exceeded
61 Halted 0 ms 0 KB -