oj.uz

Submission #41117

# Submission time Handle Problem Language Result Execution time Memory
41117 2018-02-13T01:01:31 Z 14kg None (KOI16_tree) C++11
100 / 100
 409 ms 65536 KB 
#include <stdio.h>
#include <vector>
#define NN 262144
#define INF 999999999

using namespace std;
struct Node {
	int s, e, up;
} node[200001];
vector<int> r[200001];
int n, nn, q, tree_cnt, tree[NN * 2];

int max2(int x, int y) { return x > y ? x : y; }
void make_tree(int x, int up) {
	node[x].up = up, node[x].s = ++tree_cnt;
	for (auto i : r[x])
		if (i != up) make_tree(i, x);
	node[x].e = tree_cnt;
}
int get_top(int x) {
	if (x == 1) return tree[1];
	return max2(tree[x], get_top(x / 2));
}
void tree_push(int lev, int l, int r, int x, int y, int num) {
	int mid = (l + r) / 2;
	
	if (x <= l && r <= y) { tree[lev] = max2(tree[lev], num); return; }
	if (r < x || y < l) return;
	tree_push(lev * 2, l, mid, x, y, num), tree_push(lev * 2 + 1, mid + 1, r, x, y, num);
}
int main() {
	int x, y, z;

	scanf("%d %d", &n, &q);
	for (nn = 1; nn < n; nn *= 2);
	for (int i = 2; i <= n; i++) {
		scanf("%d", &x);
		r[i].push_back(x), r[x].push_back(i);
	}

	make_tree(1, 0), tree[1] = 1;
	while (q--) {
		scanf("%d %d %d", &x, &y, &z);

		int tx = get_top(node[x].s + nn - 1), ty = get_top(node[y].s + nn - 1);
		printf("%s\n", tx == ty ? "YES" : "NO");

		if (z && tx == ty) tree_push(1, 1, nn, node[x].s, node[x].e, node[x].s);
		if (z && tx != ty) tree_push(1, 1, nn, node[y].s, node[y].e, node[y].s);
	}
}

Compilation message

tree.cpp: In function 'int main()':
tree.cpp:34:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &q);
                        ^
tree.cpp:37:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &x);
                  ^
tree.cpp:43:32: 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
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5124 KB Output is correct
2 Correct 6 ms 5124 KB Output is correct
3 Correct 6 ms 5264 KB Output is correct
4 Correct 6 ms 5308 KB Output is correct
5 Correct 6 ms 5340 KB Output is correct
6 Correct 6 ms 5356 KB Output is correct
7 Correct 6 ms 5372 KB Output is correct
8 Correct 6 ms 5580 KB Output is correct
9 Correct 6 ms 5640 KB Output is correct
10 Correct 7 ms 5780 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5124 KB Output is correct
2 Correct 6 ms 5124 KB Output is correct
3 Correct 6 ms 5264 KB Output is correct
4 Correct 6 ms 5308 KB Output is correct
5 Correct 6 ms 5340 KB Output is correct
6 Correct 6 ms 5356 KB Output is correct
7 Correct 6 ms 5372 KB Output is correct
8 Correct 6 ms 5580 KB Output is correct
9 Correct 6 ms 5640 KB Output is correct
10 Correct 7 ms 5780 KB Output is correct
11 Correct 6 ms 5780 KB Output is correct
12 Correct 6 ms 5780 KB Output is correct
13 Correct 6 ms 5780 KB Output is correct
14 Correct 7 ms 5780 KB Output is correct
15 Correct 6 ms 5780 KB Output is correct
16 Correct 6 ms 5780 KB Output is correct
17 Correct 6 ms 5780 KB Output is correct
18 Correct 6 ms 5780 KB Output is correct
19 Correct 7 ms 5792 KB Output is correct
20 Correct 6 ms 5808 KB Output is correct
21 Correct 6 ms 5828 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5124 KB Output is correct
2 Correct 6 ms 5124 KB Output is correct
3 Correct 6 ms 5264 KB Output is correct
4 Correct 6 ms 5308 KB Output is correct
5 Correct 6 ms 5340 KB Output is correct
6 Correct 6 ms 5356 KB Output is correct
7 Correct 6 ms 5372 KB Output is correct
8 Correct 6 ms 5580 KB Output is correct
9 Correct 6 ms 5640 KB Output is correct
10 Correct 7 ms 5780 KB Output is correct
11 Correct 6 ms 5780 KB Output is correct
12 Correct 6 ms 5780 KB Output is correct
13 Correct 6 ms 5780 KB Output is correct
14 Correct 7 ms 5780 KB Output is correct
15 Correct 6 ms 5780 KB Output is correct
16 Correct 6 ms 5780 KB Output is correct
17 Correct 6 ms 5780 KB Output is correct
18 Correct 6 ms 5780 KB Output is correct
19 Correct 7 ms 5792 KB Output is correct
20 Correct 6 ms 5808 KB Output is correct
21 Correct 6 ms 5828 KB Output is correct
22 Correct 133 ms 8784 KB Output is correct
23 Correct 136 ms 10880 KB Output is correct
24 Correct 141 ms 13204 KB Output is correct
25 Correct 150 ms 15276 KB Output is correct
26 Correct 137 ms 17520 KB Output is correct
27 Correct 122 ms 19868 KB Output is correct
28 Correct 117 ms 22092 KB Output is correct
29 Correct 117 ms 24412 KB Output is correct
30 Correct 112 ms 26648 KB Output is correct
31 Correct 113 ms 28740 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5124 KB Output is correct
2 Correct 6 ms 5124 KB Output is correct
3 Correct 6 ms 5264 KB Output is correct
4 Correct 6 ms 5308 KB Output is correct
5 Correct 6 ms 5340 KB Output is correct
6 Correct 6 ms 5356 KB Output is correct
7 Correct 6 ms 5372 KB Output is correct
8 Correct 6 ms 5580 KB Output is correct
9 Correct 6 ms 5640 KB Output is correct
10 Correct 7 ms 5780 KB Output is correct
11 Correct 351 ms 52440 KB Output is correct
12 Correct 364 ms 56692 KB Output is correct
13 Correct 356 ms 61004 KB Output is correct
14 Correct 368 ms 65276 KB Output is correct
15 Correct 336 ms 65536 KB Output is correct
16 Correct 352 ms 65536 KB Output is correct
17 Correct 387 ms 65536 KB Output is correct
18 Correct 378 ms 65536 KB Output is correct
19 Correct 409 ms 65536 KB Output is correct
20 Correct 382 ms 65536 KB Output is correct
21 Correct 395 ms 65536 KB Output is correct

Subtask #5
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5124 KB Output is correct
2 Correct 6 ms 5124 KB Output is correct
3 Correct 6 ms 5264 KB Output is correct
4 Correct 6 ms 5308 KB Output is correct
5 Correct 6 ms 5340 KB Output is correct
6 Correct 6 ms 5356 KB Output is correct
7 Correct 6 ms 5372 KB Output is correct
8 Correct 6 ms 5580 KB Output is correct
9 Correct 6 ms 5640 KB Output is correct
10 Correct 7 ms 5780 KB Output is correct
11 Correct 6 ms 5780 KB Output is correct
12 Correct 6 ms 5780 KB Output is correct
13 Correct 6 ms 5780 KB Output is correct
14 Correct 7 ms 5780 KB Output is correct
15 Correct 6 ms 5780 KB Output is correct
16 Correct 6 ms 5780 KB Output is correct
17 Correct 6 ms 5780 KB Output is correct
18 Correct 6 ms 5780 KB Output is correct
19 Correct 7 ms 5792 KB Output is correct
20 Correct 6 ms 5808 KB Output is correct
21 Correct 6 ms 5828 KB Output is correct
22 Correct 133 ms 8784 KB Output is correct
23 Correct 136 ms 10880 KB Output is correct
24 Correct 141 ms 13204 KB Output is correct
25 Correct 150 ms 15276 KB Output is correct
26 Correct 137 ms 17520 KB Output is correct
27 Correct 122 ms 19868 KB Output is correct
28 Correct 117 ms 22092 KB Output is correct
29 Correct 117 ms 24412 KB Output is correct
30 Correct 112 ms 26648 KB Output is correct
31 Correct 113 ms 28740 KB Output is correct
32 Correct 351 ms 52440 KB Output is correct
33 Correct 364 ms 56692 KB Output is correct
34 Correct 356 ms 61004 KB Output is correct
35 Correct 368 ms 65276 KB Output is correct
36 Correct 336 ms 65536 KB Output is correct
37 Correct 352 ms 65536 KB Output is correct
38 Correct 387 ms 65536 KB Output is correct
39 Correct 378 ms 65536 KB Output is correct
40 Correct 409 ms 65536 KB Output is correct
41 Correct 382 ms 65536 KB Output is correct
42 Correct 395 ms 65536 KB Output is correct
43 Correct 293 ms 65536 KB Output is correct
44 Correct 293 ms 65536 KB Output is correct
45 Correct 294 ms 65536 KB Output is correct
46 Correct 265 ms 65536 KB Output is correct
47 Correct 318 ms 65536 KB Output is correct
48 Correct 217 ms 65536 KB Output is correct
49 Correct 212 ms 65536 KB Output is correct
50 Correct 215 ms 65536 KB Output is correct
51 Correct 395 ms 65536 KB Output is correct