oj.uz

Submission #1009020

# Submission time Handle Problem Language Result Execution time Memory
1009020 2024-06-27T08:00:40 Z PenguinsAreCute Trampoline (info1cup20_trampoline) C++17
100 / 100
 661 ms 41396 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
using ii = pair<int,int>;
vector<int> adj[200005];
int pa[200005], h[200005], j[200005];
void dfs(int x) {
	for(auto i: adj[x]) {
		h[i] = h[x] + 1;
		j[i] = (h[j[j[x]]]+h[x]==(h[j[x]]<<1)?j[j[x]]:x);
		dfs(i);
	}
}
int lift(int x, int t) {
	while(h[x]>t) x=(h[j[x]]<t?pa[x]:j[x]);
	return x;
}
main() {
	int r, c, n; cin >> r >> c >> n;
	vector<ii> v;
	for(int x,y,i=0;i<n;i++) {
		cin >> x >> y;
		v.push_back({x,y});
	}
	sort(v.begin(),v.end());
	for(int i=0;i<n;i++) {
		auto [x,y] = v[i];
		auto it = lower_bound(v.begin(),v.end(),ii(x+1,y));
		if(it==v.end()||(*it).first>x+1) pa[i]=n;
		else pa[i]=it-v.begin();
		adj[pa[i]].push_back(i);
	}
	j[n] = n; dfs(n);
	int t; cin >> t;
	for(int x1,y1,x2,y2;t--;) {
		cin >> x1 >> y1 >> x2 >> y2;
		if(x1==x2) {
			cout << (y1<=y2?"Yes\n":"No\n");
			continue;
		}
		if(x1>x2) {
			cout << "No\n";
			continue;
		}
		auto it = lower_bound(v.begin(),v.end(),ii(x1,y1));
		if(it==v.end()||(*it).first>x1) {
			cout << "No\n";
			continue;
		}
		int green = it - v.begin();
		if(h[green]<x2-x1-1) {
			cout << "No\n";
			continue;
		}
		int dest = lift(green,h[green]-(x2-x1-1));
		cout << (dest!=n && v[dest].first==x2-1 && v[dest].second<=y2 ? "Yes\n" : "No\n");
	}
}

Compilation message

trampoline.cpp:18:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   18 | main() {
      | ^~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7892 KB 200 token(s): yes count is 21, no count is 179
2 Correct 6 ms 8148 KB 200 token(s): yes count is 70, no count is 130
3 Correct 4 ms 7864 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 98 ms 17844 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 113 ms 17800 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 85 ms 19848 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 106 ms 18100 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 508 ms 26296 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 511 ms 28344 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 528 ms 28856 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 519 ms 29620 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 541 ms 29624 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 576 ms 32956 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 15 ms 8028 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 20 ms 8028 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 17 ms 8024 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 16 ms 8028 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 16 ms 8028 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 16 ms 8188 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 595 ms 27932 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 610 ms 25888 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 570 ms 27316 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 602 ms 41396 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 541 ms 33120 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 593 ms 28856 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 560 ms 29372 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 499 ms 29884 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 602 ms 32188 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 604 ms 32696 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 648 ms 36280 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 661 ms 27920 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 592 ms 27720 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 628 ms 30320 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 631 ms 29368 KB 200000 token(s): yes count is 129674, no count is 70326