oj.uz

Submission #697805

# Submission time Handle Problem Language Result Execution time Memory
697805 2023-02-11T06:22:48 Z vjudge1 Birthday gift (IZhO18_treearray) C++17
30 / 100
 4000 ms 7904 KB 
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
 
#define file ""
 
#define all(x) x.begin(), x.end()
 
#define fr first
#define sc second
 
#define pb push_back
                                                         
using namespace std;
 
typedef long long ll;
typedef pair<int, int> pii;
const int N = 3e5;
const int inf = 1e9 + 5;

map <int, pii> mp;
int a[N], tin[N], tout[N], t[4 * N], timer = 1;
int up[N][25];
vector <int> g[N];


void dfs (int x, int pr) {
	tin[x] = timer++;
	up[x][0] = pr;
	for (int i = 1; i <= 20; i++) {
		up[x][i] = up[up[x][i - 1]][i - 1];
	}
	for (int to : g[x]) {
		if (to != pr) dfs(to, x);
	}
	tout[x] = timer;
}

bool upper (int x, int y) {
	if (tin[x] <= tin[y] && tout[x] >= tout[y]) return true;
	return false;
}

int lca (int x, int y) {
	if (x == 0) return y;
	if (y == 0) return x;
	if (upper(x, y)) return x;
	if (upper(y, x)) return y;
	for (int i = 20; i >= 0; i--) {
		if (!upper(up[x][i], y)) x = up[x][i];
	}
	return up[x][0];
}

void build (int u, int l, int r) {
	if (l == r) {
		t[u] = a[l];
		return;
	}
	int m = l + r >> 1;
	build(u + u, l, m);
	build(u + u + 1, m + 1, r);
	t[u] = lca (t[u + u], t[u + u + 1]);
}

void upd (int u, int ul, int ur, int pos, int val) {
	if (ul == ur && ul == pos) {
		t[u] = val;
		return;
	}
	int m = ul + ur >> 1;
	if (pos <= m) upd(u + u, ul, m, pos, val);
	else upd(u + u + 1, m + 1, ur, pos, val);
	t[u] = lca (t[u + u], t[u + u + 1]);
}

int get (int u, int ul, int ur, int l, int r) {
	if (ul > r || ur < l) return 0;
	if (ul >= l && ur <= r) return t[u];
	int m = ul + ur >> 1;
	int x = get(u + u, ul, m, l, r);
	int y = get(u + u + 1, m + 1, ur, l, r);
	return lca(x, y);
}

pii get (int u, int ul, int ur, int l, int r, int val) {
	//cerr << u << " " << ul << " " << ur << " " << l << " " << r << " " << val << endl;
	if (ul == ur && !upper(val, t[u])) return {-1, -1};
	if (ul > r || ur < l) {
		//cerr << u << " " << ul << " " << ur <<  " " << val << " " << t[u] << " ok1\n";
		return {-1, -1};
	}
	if (ul >= l && ur <= r && upper(val, t[u])) {
		//cerr << u << " " << ul << " " << ur << " " << val << " " << t[u] << " ok2\n";
		return {ul, ur};
	}
	//if (ul >= l && ur <= r && !upper(val, t[u])) {
	//	cerr << u << " " << ul << " " << ur <<  " " << val << " " << t[u] << " ok3\n";
	//	return {-1, -1};
	//}
	int m = ul + ur >> 1;
	pii x = get(u + u, ul, m, l, r, val);
	pii y = get(u + u + 1, m + 1, ur, l, r, val);
	//cerr << u << " " << ul << " " << ur << ": " << x.fr << " " << x.sc << " - " << y.fr << " " << y.sc << endl;
	if (x.fr == -1 && y.fr != -1) return y;
	else if (y.fr == -1 && x.fr != -1) return x;
	return {x.fr, y.sc};
}


int main(){


	ios_base :: sync_with_stdio(false);
	cin.tie(NULL);
	srand(time(NULL));
	int n, m, q;
	cin >> n >> m >> q;
	int u, v, tp;
	for  (int i = 1; i < n; i++) {
		cin >> u >> v;
		g[u].pb(v);
		g[v].pb(u);
	}
	dfs(1, 1);
	for (int i = 1; i <= m; i++) {
		cin >> a[i];
	}
	while (q--) {
		cin >> tp;
		if (tp == 1) {
			int pos, val;
			cin >> pos >> val;
			a[pos] = val;
		} 
		else {
			int l, r, val;
			cin >> l >> r >> val;
			int ok = 0;
			for (int i = l; i <= r; i++) {
				int LCA = a[i];
				for (int j = i; j <= r; j++) {
					LCA = lca(LCA, a[j]);
					if (LCA == val) {
						cout << i << " " << j << "\n";
						ok = 1;
						break;
					}
				}
				if (ok == 1) break;
			}
			if (ok == 0) cout << -1 << " " << -1 << "\n";
		}
	}
}

Compilation message

treearray.cpp: In function 'void build(int, int, int)':
treearray.cpp:60:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   60 |  int m = l + r >> 1;
      |          ~~^~~
treearray.cpp: In function 'void upd(int, int, int, int, int)':
treearray.cpp:71:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   71 |  int m = ul + ur >> 1;
      |          ~~~^~~~
treearray.cpp: In function 'int get(int, int, int, int, int)':
treearray.cpp:80:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   80 |  int m = ul + ur >> 1;
      |          ~~~^~~~
treearray.cpp: In function 'pii get(int, int, int, int, int, int)':
treearray.cpp:101:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  101 |  int m = ul + ur >> 1;
      |          ~~~^~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB n=5
2 Correct 4 ms 7404 KB n=100
3 Correct 4 ms 7380 KB n=100
4 Correct 5 ms 7380 KB n=100
5 Correct 4 ms 7452 KB n=100
6 Correct 5 ms 7380 KB n=100
7 Correct 5 ms 7380 KB n=100
8 Correct 4 ms 7312 KB n=100
9 Correct 4 ms 7380 KB n=100
10 Correct 4 ms 7380 KB n=100
11 Correct 4 ms 7380 KB n=100
12 Correct 3 ms 7380 KB n=100
13 Correct 4 ms 7380 KB n=100
14 Correct 5 ms 7380 KB n=100
15 Correct 3 ms 7380 KB n=100
16 Correct 4 ms 7380 KB n=100
17 Correct 5 ms 7380 KB n=100
18 Correct 4 ms 7380 KB n=100
19 Correct 4 ms 7380 KB n=100
20 Correct 4 ms 7380 KB n=100
21 Correct 4 ms 7380 KB n=100
22 Correct 4 ms 7380 KB n=100
23 Correct 4 ms 7380 KB n=100
24 Correct 4 ms 7380 KB n=100
25 Correct 4 ms 7380 KB n=100
26 Correct 3 ms 7380 KB n=12
27 Correct 5 ms 7380 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB n=5
2 Correct 4 ms 7404 KB n=100
3 Correct 4 ms 7380 KB n=100
4 Correct 5 ms 7380 KB n=100
5 Correct 4 ms 7452 KB n=100
6 Correct 5 ms 7380 KB n=100
7 Correct 5 ms 7380 KB n=100
8 Correct 4 ms 7312 KB n=100
9 Correct 4 ms 7380 KB n=100
10 Correct 4 ms 7380 KB n=100
11 Correct 4 ms 7380 KB n=100
12 Correct 3 ms 7380 KB n=100
13 Correct 4 ms 7380 KB n=100
14 Correct 5 ms 7380 KB n=100
15 Correct 3 ms 7380 KB n=100
16 Correct 4 ms 7380 KB n=100
17 Correct 5 ms 7380 KB n=100
18 Correct 4 ms 7380 KB n=100
19 Correct 4 ms 7380 KB n=100
20 Correct 4 ms 7380 KB n=100
21 Correct 4 ms 7380 KB n=100
22 Correct 4 ms 7380 KB n=100
23 Correct 4 ms 7380 KB n=100
24 Correct 4 ms 7380 KB n=100
25 Correct 4 ms 7380 KB n=100
26 Correct 3 ms 7380 KB n=12
27 Correct 5 ms 7380 KB n=100
28 Correct 5 ms 7380 KB n=500
29 Correct 16 ms 7420 KB n=500
30 Correct 14 ms 7464 KB n=500
31 Correct 17 ms 7380 KB n=500
32 Correct 5 ms 7380 KB n=500
33 Correct 14 ms 7380 KB n=500
34 Correct 4 ms 7348 KB n=500
35 Correct 15 ms 7480 KB n=500
36 Correct 169 ms 7436 KB n=500
37 Correct 144 ms 7380 KB n=500
38 Correct 149 ms 7444 KB n=500
39 Correct 36 ms 7440 KB n=500
40 Correct 27 ms 7380 KB n=500
41 Correct 26 ms 7380 KB n=500
42 Correct 74 ms 7448 KB n=500
43 Correct 76 ms 7380 KB n=500
44 Correct 74 ms 7440 KB n=500
45 Correct 4 ms 7380 KB n=500
46 Correct 16 ms 7476 KB n=500
47 Correct 14 ms 7380 KB n=500
48 Correct 5 ms 7444 KB n=500
49 Correct 14 ms 7476 KB n=500
50 Correct 22 ms 7380 KB n=500
51 Correct 27 ms 7380 KB n=500
52 Correct 24 ms 7480 KB n=500
53 Correct 26 ms 7380 KB n=500
54 Correct 12 ms 7380 KB n=500
55 Correct 6 ms 7380 KB n=278
56 Correct 90 ms 7424 KB n=500
57 Correct 78 ms 7460 KB n=500
58 Correct 75 ms 7456 KB n=500

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB n=5
2 Correct 4 ms 7404 KB n=100
3 Correct 4 ms 7380 KB n=100
4 Correct 5 ms 7380 KB n=100
5 Correct 4 ms 7452 KB n=100
6 Correct 5 ms 7380 KB n=100
7 Correct 5 ms 7380 KB n=100
8 Correct 4 ms 7312 KB n=100
9 Correct 4 ms 7380 KB n=100
10 Correct 4 ms 7380 KB n=100
11 Correct 4 ms 7380 KB n=100
12 Correct 3 ms 7380 KB n=100
13 Correct 4 ms 7380 KB n=100
14 Correct 5 ms 7380 KB n=100
15 Correct 3 ms 7380 KB n=100
16 Correct 4 ms 7380 KB n=100
17 Correct 5 ms 7380 KB n=100
18 Correct 4 ms 7380 KB n=100
19 Correct 4 ms 7380 KB n=100
20 Correct 4 ms 7380 KB n=100
21 Correct 4 ms 7380 KB n=100
22 Correct 4 ms 7380 KB n=100
23 Correct 4 ms 7380 KB n=100
24 Correct 4 ms 7380 KB n=100
25 Correct 4 ms 7380 KB n=100
26 Correct 3 ms 7380 KB n=12
27 Correct 5 ms 7380 KB n=100
28 Correct 5 ms 7380 KB n=500
29 Correct 16 ms 7420 KB n=500
30 Correct 14 ms 7464 KB n=500
31 Correct 17 ms 7380 KB n=500
32 Correct 5 ms 7380 KB n=500
33 Correct 14 ms 7380 KB n=500
34 Correct 4 ms 7348 KB n=500
35 Correct 15 ms 7480 KB n=500
36 Correct 169 ms 7436 KB n=500
37 Correct 144 ms 7380 KB n=500
38 Correct 149 ms 7444 KB n=500
39 Correct 36 ms 7440 KB n=500
40 Correct 27 ms 7380 KB n=500
41 Correct 26 ms 7380 KB n=500
42 Correct 74 ms 7448 KB n=500
43 Correct 76 ms 7380 KB n=500
44 Correct 74 ms 7440 KB n=500
45 Correct 4 ms 7380 KB n=500
46 Correct 16 ms 7476 KB n=500
47 Correct 14 ms 7380 KB n=500
48 Correct 5 ms 7444 KB n=500
49 Correct 14 ms 7476 KB n=500
50 Correct 22 ms 7380 KB n=500
51 Correct 27 ms 7380 KB n=500
52 Correct 24 ms 7480 KB n=500
53 Correct 26 ms 7380 KB n=500
54 Correct 12 ms 7380 KB n=500
55 Correct 6 ms 7380 KB n=278
56 Correct 90 ms 7424 KB n=500
57 Correct 78 ms 7460 KB n=500
58 Correct 75 ms 7456 KB n=500
59 Correct 15 ms 7700 KB n=2000
60 Correct 693 ms 7764 KB n=2000
61 Correct 687 ms 7784 KB n=2000
62 Correct 492 ms 7748 KB n=2000
63 Correct 19 ms 7744 KB n=2000
64 Correct 627 ms 7876 KB n=2000
65 Correct 7 ms 7728 KB n=2000
66 Correct 781 ms 7904 KB n=2000
67 Correct 42 ms 7636 KB n=2000
68 Correct 662 ms 7764 KB n=2000
69 Execution timed out 4049 ms 7716 KB Time limit exceeded
70 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB n=5
2 Correct 4 ms 7404 KB n=100
3 Correct 4 ms 7380 KB n=100
4 Correct 5 ms 7380 KB n=100
5 Correct 4 ms 7452 KB n=100
6 Correct 5 ms 7380 KB n=100
7 Correct 5 ms 7380 KB n=100
8 Correct 4 ms 7312 KB n=100
9 Correct 4 ms 7380 KB n=100
10 Correct 4 ms 7380 KB n=100
11 Correct 4 ms 7380 KB n=100
12 Correct 3 ms 7380 KB n=100
13 Correct 4 ms 7380 KB n=100
14 Correct 5 ms 7380 KB n=100
15 Correct 3 ms 7380 KB n=100
16 Correct 4 ms 7380 KB n=100
17 Correct 5 ms 7380 KB n=100
18 Correct 4 ms 7380 KB n=100
19 Correct 4 ms 7380 KB n=100
20 Correct 4 ms 7380 KB n=100
21 Correct 4 ms 7380 KB n=100
22 Correct 4 ms 7380 KB n=100
23 Correct 4 ms 7380 KB n=100
24 Correct 4 ms 7380 KB n=100
25 Correct 4 ms 7380 KB n=100
26 Correct 3 ms 7380 KB n=12
27 Correct 5 ms 7380 KB n=100
28 Correct 5 ms 7380 KB n=500
29 Correct 16 ms 7420 KB n=500
30 Correct 14 ms 7464 KB n=500
31 Correct 17 ms 7380 KB n=500
32 Correct 5 ms 7380 KB n=500
33 Correct 14 ms 7380 KB n=500
34 Correct 4 ms 7348 KB n=500
35 Correct 15 ms 7480 KB n=500
36 Correct 169 ms 7436 KB n=500
37 Correct 144 ms 7380 KB n=500
38 Correct 149 ms 7444 KB n=500
39 Correct 36 ms 7440 KB n=500
40 Correct 27 ms 7380 KB n=500
41 Correct 26 ms 7380 KB n=500
42 Correct 74 ms 7448 KB n=500
43 Correct 76 ms 7380 KB n=500
44 Correct 74 ms 7440 KB n=500
45 Correct 4 ms 7380 KB n=500
46 Correct 16 ms 7476 KB n=500
47 Correct 14 ms 7380 KB n=500
48 Correct 5 ms 7444 KB n=500
49 Correct 14 ms 7476 KB n=500
50 Correct 22 ms 7380 KB n=500
51 Correct 27 ms 7380 KB n=500
52 Correct 24 ms 7480 KB n=500
53 Correct 26 ms 7380 KB n=500
54 Correct 12 ms 7380 KB n=500
55 Correct 6 ms 7380 KB n=278
56 Correct 90 ms 7424 KB n=500
57 Correct 78 ms 7460 KB n=500
58 Correct 75 ms 7456 KB n=500
59 Correct 15 ms 7700 KB n=2000
60 Correct 693 ms 7764 KB n=2000
61 Correct 687 ms 7784 KB n=2000
62 Correct 492 ms 7748 KB n=2000
63 Correct 19 ms 7744 KB n=2000
64 Correct 627 ms 7876 KB n=2000
65 Correct 7 ms 7728 KB n=2000
66 Correct 781 ms 7904 KB n=2000
67 Correct 42 ms 7636 KB n=2000
68 Correct 662 ms 7764 KB n=2000
69 Execution timed out 4049 ms 7716 KB Time limit exceeded
70 Halted 0 ms 0 KB -