oj.uz

Submission #921002

# Submission time Handle Problem Language Result Execution time Memory
921002 2024-02-03T08:47:49 Z hmm789 Trampoline (info1cup20_trampoline) C++14
100 / 100
 700 ms 72548 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 200000;

vector<int> adj[MAXN];
int p[MAXN][20], depth[MAXN], grp[MAXN];

void dfs(int x, int g, int d, int par) {
	grp[x] = g;
	depth[x] = d;
	p[x][0] = par;
	for(int i = 1; i < 20; i++) {
		if(p[x][i-1] == -1) break;
		p[x][i] = p[p[x][i-1]][i-1];
	}
	for(int i : adj[x]) if(i != par) dfs(i, g, d+1, x);
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	memset(p, -1, sizeof(p));
	int r, c, n, x1, y1, x2, y2;
	cin >> r >> c >> n;
	pair<int, int> a[n];
	for(int i = 0; i < n; i++) cin >> a[i].first >> a[i].second;
	sort(a, a+n);
	//for(int i = 0; i < n-1; i++) if(a[i].first == a[i+1].first) adj[i].push_back(i+1);
	map<int, set<pair<int, int>>> m;
	for(int i = 0; i < n; i++) {
		m[a[i].first].insert({a[i].second, i});
	}
	int tmp[n];
	memset(tmp, 0, sizeof(tmp));
	for(int i = 0; i < n; i++) {
		if(m.find(a[i].first+1) == m.end()) continue;
		auto it = m[a[i].first+1].lower_bound({a[i].second, 0});
		if(it == m[a[i].first+1].end()) continue;
		adj[it->second].push_back(i);
		tmp[i] = 1;
	}
	for(int i = 0; i < n; i++) if(tmp[i] == 0) dfs(i, i, 0, -1);
	int q;
	cin >> q;
	while(q--) {
		cin >> x1 >> y1 >> x2 >> y2;
		if(x1 > x2 || y1 > y2) {
			cout << "No" << '\n';
			continue;
		}
		if(x1 == x2) {
			cout << "Yes" << '\n';
			continue;
		}
		if(m.find(x1) == m.end()) {
			cout << "No" << '\n';
			continue;
		}
		if(m.find(x2-1) == m.end()) {
			cout << "No" << '\n';
			continue;
		}
		auto it = m[x1].lower_bound({y1, 0});
		auto it2 = m[x2-1].lower_bound({y2+1, 0});
		if(it == m[x1].end()) {
			cout << "No" << '\n';
			continue;
		}
		if(it2 == m[x2-1].begin()) {
			cout << "No" << '\n';
			continue;
		}
		it2--;
		int h = x2-1-x1;
		int cur = it->second;
		for(int i = 0; i < 20; i++) {
			if(h&(1<<i)) cur = p[cur][i];
			if(cur == -1) {
				cout << "No" << '\n';
				goto ed;
			}
		}
		if(a[cur].second <= a[it2->second].second) cout << "Yes" << '\n';
		else cout << "No" << '\n';
		ed:;
	}
}

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 22872 KB 200 token(s): yes count is 21, no count is 179
2 Correct 8 ms 22876 KB 200 token(s): yes count is 70, no count is 130
3 Correct 7 ms 22620 KB 197 token(s): yes count is 25, no count is 172

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 37588 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 108 ms 37568 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 110 ms 39548 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 106 ms 37716 KB 4000 token(s): yes count is 1991, no count is 2009

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 270 ms 36036 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 301 ms 37880 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 239 ms 37968 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 321 ms 38948 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 293 ms 39104 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 358 ms 48520 KB 200000 token(s): yes count is 97163, no count is 102837

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 22620 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 10 ms 22500 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 10 ms 23008 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 9 ms 22600 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 10 ms 22876 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 9 ms 22456 KB 5000 token(s): yes count is 3390, no count is 1610

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 552 ms 51944 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 492 ms 41920 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 303 ms 37968 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 700 ms 72548 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 431 ms 49096 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 314 ms 37792 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 295 ms 37836 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 315 ms 38048 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 500 ms 48576 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 526 ms 49524 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 644 ms 60472 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 233 ms 35920 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 246 ms 36180 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 381 ms 39000 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 272 ms 37864 KB 200000 token(s): yes count is 129674, no count is 70326