oj.uz

Submission #1029264

# Submission time Handle Problem Language Result Execution time Memory
1029264 2024-07-20T14:33:09 Z berr Trampoline (info1cup20_trampoline) C++17
100 / 100
 253 ms 56920 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

void f(){
	#ifndef ONLINE_JUDGE
	freopen("in.txt", "r", stdin);
	freopen("out.txt", "w", stdout);
	#endif
}

signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);

//	f();

	int n, m, t; cin >> n >> m >> t;
	vector<array<int, 2>> tram(t);
	vector<array<int, 25>> p(t+1);

	for(auto &[i, l]: tram) cin >> i >> l;

	sort(tram.begin(), tram.end());
	vector<array<int, 2>> ol;
	int pos=-1;
	for(int i=t-1; i>=0; i--){

		auto [r, c]=tram[i];

		if(i<t-1&&tram[i+1][0]!=r){
			ol.clear();
			for(int j=i+1; j<t; j++){
				if(tram[j][0]==r+1){
					ol.push_back({tram[j][1], j});
				}
				else break;
			}

			pos=ol.size()-1;
		} 

		while(pos>0&&ol[pos-1][0]>=c) pos--;
		
		if(pos<0||ol[pos][0]<c){

			p[i][0]=i;
		}
		else{
			p[i][0]=ol[pos][1];
		}
	}

	for(int l=1; l<25; l++){
		for(int i=0; i<t; i++){
			p[i][l]=p[p[i][l-1]][l-1];
		}
	}

	int q; cin >> q;
	while(q--){ 
		int x, y; cin >> x >> y;
		int pos=lower_bound(tram.begin(), tram.end(), (array<int, 2>){x, y})-tram.begin();
		int ex, ey; cin >> ex >> ey;

		if(ex==x){
			if(y<=ey) cout<<"Yes";
			else cout<<"No";
		}
		else if(ex<x){
			cout<<"No";
		}
		else if(tram.size()==pos) cout<<"No";
		else if(tram[pos][0]!=x) cout<<"No";
		else{
			int dif=ex-x-1;
			for(int j=24; j>=0; j--){
				if((1<<j)<=dif){
					pos=p[pos][j];
					dif-=(1<<j);
				}
			}

			if(tram[pos][0]==ex-1&&tram[pos][1]<=ey){
				cout<<"Yes";
			}
			else cout<<"No";

		}

		cout<<"\n";
	}
}

Compilation message

trampoline.cpp: In function 'int main()':
trampoline.cpp:73:22: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   73 |   else if(tram.size()==pos) cout<<"No";
      |           ~~~~~~~~~~~^~~~~
trampoline.cpp: In function 'void f()':
trampoline.cpp:7:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |  freopen("in.txt", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:8:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |  freopen("out.txt", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2140 KB 200 token(s): yes count is 21, no count is 179
2 Correct 3 ms 2652 KB 200 token(s): yes count is 70, no count is 130
3 Correct 3 ms 1884 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 81 ms 44572 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 73 ms 44364 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 75 ms 44112 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 71 ms 44572 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 165 ms 56920 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 166 ms 56264 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 171 ms 55256 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 175 ms 55148 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 171 ms 55116 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 177 ms 54996 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 4 ms 1644 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 4 ms 1628 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 4 ms 1628 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 5 ms 1884 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 4 ms 1628 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 4 ms 1900 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 250 ms 55008 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 229 ms 54992 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 190 ms 55248 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 253 ms 54864 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 198 ms 56776 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 192 ms 56348 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 197 ms 56348 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 196 ms 55672 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 241 ms 54984 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 240 ms 55004 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 247 ms 54996 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 181 ms 56264 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 182 ms 56916 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 217 ms 54992 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 193 ms 56384 KB 200000 token(s): yes count is 129674, no count is 70326