oj.uz

Submission #1025563

# Submission time Handle Problem Language Result Execution time Memory
1025563 2024-07-17T07:02:43 Z HappyCapybara Stations (IOI20_stations) C++17
100 / 100
 674 ms 1276 KB 
#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
 
int cnt;
vector<vector<int>> g;
vector<int> in, out, d;
 
void dfs(int cur, int dep){
	if (d[cur] != -1) return;
	d[cur] = dep;
	in[cur] = cnt++;
	for (int next : g[cur]) dfs(next, dep+1);
	out[cur] = cnt++;
}
 
vector<int> label(int n, int k, vector<int> u, vector<int> v){
   g.resize(0);
	g.resize(n);
	for (int i=0; i<n-1; i++){
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
	}
  	in.resize(0); out.resize(0); d.resize(0);
	in.resize(n); out.resize(n); d.resize(n, -1);
	cnt = 0;
	dfs(0, 0);
	/*for (int x : in) cout << x << " ";
	cout << "\n";
	for (int x : out) cout << x << " ";
	cout << "\n";*/
	vector<int> l(n, 0);
	for (int i=0; i<n; i++){
		if (d[i] % 2) l[i] = out[i];
		else l[i] = in[i];
	}
	//return l;
	vector<int> w = l;
	sort(w.begin(), w.end());
	unordered_map<int,int> m;
	for (int i=0; i<n; i++) m[w[i]] = i;
	for (int i=0; i<n; i++) l[i] = m[l[i]];
	/*for (int x : l) cout << x << " ";
	cout << "\n";*/
	return l;
}
 
int find_next_station(int s, int t, vector<int> c){
	if (c.size() == 1) return c[0];
	if (s == 0){
		vector<int> d(c.size());
		for (int i=0; i<c.size(); i++){
			if (i == 0) d[i] = s+1;
			else d[i] = c[i-1]+1;
			if (d[i] <= t && t <= c[i]) return c[i];
		}
	}
	else {
		int x = 2000;
		for (int y : c) x = min(x, y);
		if (s < x){
			vector<int> d(c.size()-1);
			for (int i=0; i<c.size()-1; i++){
				if (i == 0) d[i] = s+1;
				else d[i] = c[i-1]+1;
				if (d[i] <= t && t <= c[i]) return c[i];
			}
			return c.back();
		}
		else {
			vector<int> d(c.size());
			for (int i=c.size()-1; i>=0; i--){
				if (i == c.size()-1) d[i] = s-1;
				else d[i] = c[i+1]-1;
				if (c[i] <= t && t <= d[i]) return c[i];
			}
			return c[0];
		}
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |   for (int i=0; i<c.size(); i++){
      |                 ~^~~~~~~~~
stations.cpp:63:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |    for (int i=0; i<c.size()-1; i++){
      |                  ~^~~~~~~~~~~
stations.cpp:73:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     if (i == c.size()-1) d[i] = s-1;
      |         ~~^~~~~~~~~~~~~
stations.cpp:80:1: warning: control reaches end of non-void function [-Wreturn-type]
   80 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 347 ms 940 KB Output is correct
2 Correct 342 ms 940 KB Output is correct
3 Correct 599 ms 684 KB Output is correct
4 Correct 448 ms 936 KB Output is correct
5 Correct 432 ms 684 KB Output is correct
6 Correct 326 ms 940 KB Output is correct
7 Correct 305 ms 684 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 3 ms 776 KB Output is correct
10 Correct 0 ms 1028 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 940 KB Output is correct
2 Correct 373 ms 684 KB Output is correct
3 Correct 658 ms 684 KB Output is correct
4 Correct 461 ms 688 KB Output is correct
5 Correct 399 ms 936 KB Output is correct
6 Correct 323 ms 684 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 359 ms 940 KB Output is correct
2 Correct 317 ms 940 KB Output is correct
3 Correct 674 ms 684 KB Output is correct
4 Correct 442 ms 684 KB Output is correct
5 Correct 370 ms 684 KB Output is correct
6 Correct 350 ms 940 KB Output is correct
7 Correct 298 ms 684 KB Output is correct
8 Correct 2 ms 768 KB Output is correct
9 Correct 3 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 413 ms 772 KB Output is correct
12 Correct 305 ms 1016 KB Output is correct
13 Correct 327 ms 1020 KB Output is correct
14 Correct 298 ms 684 KB Output is correct
15 Correct 31 ms 768 KB Output is correct
16 Correct 41 ms 772 KB Output is correct
17 Correct 64 ms 684 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 637 ms 684 KB Output is correct
2 Correct 474 ms 684 KB Output is correct
3 Correct 458 ms 684 KB Output is correct
4 Correct 2 ms 768 KB Output is correct
5 Correct 2 ms 780 KB Output is correct
6 Correct 0 ms 776 KB Output is correct
7 Correct 415 ms 772 KB Output is correct
8 Correct 609 ms 684 KB Output is correct
9 Correct 476 ms 684 KB Output is correct
10 Correct 448 ms 684 KB Output is correct
11 Correct 3 ms 776 KB Output is correct
12 Correct 2 ms 768 KB Output is correct
13 Correct 2 ms 1016 KB Output is correct
14 Correct 1 ms 776 KB Output is correct
15 Correct 0 ms 776 KB Output is correct
16 Correct 353 ms 688 KB Output is correct
17 Correct 366 ms 684 KB Output is correct
18 Correct 377 ms 684 KB Output is correct
19 Correct 356 ms 684 KB Output is correct
20 Correct 361 ms 684 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 362 ms 940 KB Output is correct
2 Correct 298 ms 940 KB Output is correct
3 Correct 658 ms 684 KB Output is correct
4 Correct 467 ms 684 KB Output is correct
5 Correct 361 ms 684 KB Output is correct
6 Correct 317 ms 940 KB Output is correct
7 Correct 315 ms 684 KB Output is correct
8 Correct 1 ms 764 KB Output is correct
9 Correct 2 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct
11 Correct 324 ms 684 KB Output is correct
12 Correct 325 ms 684 KB Output is correct
13 Correct 627 ms 684 KB Output is correct
14 Correct 461 ms 684 KB Output is correct
15 Correct 369 ms 684 KB Output is correct
16 Correct 302 ms 684 KB Output is correct
17 Correct 395 ms 684 KB Output is correct
18 Correct 312 ms 1036 KB Output is correct
19 Correct 311 ms 1276 KB Output is correct
20 Correct 290 ms 684 KB Output is correct
21 Correct 27 ms 764 KB Output is correct
22 Correct 42 ms 716 KB Output is correct
23 Correct 63 ms 684 KB Output is correct
24 Correct 3 ms 768 KB Output is correct
25 Correct 4 ms 768 KB Output is correct
26 Correct 3 ms 768 KB Output is correct
27 Correct 1 ms 812 KB Output is correct
28 Correct 1 ms 776 KB Output is correct
29 Correct 343 ms 684 KB Output is correct
30 Correct 376 ms 688 KB Output is correct
31 Correct 347 ms 684 KB Output is correct
32 Correct 348 ms 940 KB Output is correct
33 Correct 384 ms 684 KB Output is correct
34 Correct 215 ms 684 KB Output is correct
35 Correct 289 ms 1032 KB Output is correct
36 Correct 290 ms 940 KB Output is correct
37 Correct 312 ms 1024 KB Output is correct
38 Correct 317 ms 1028 KB Output is correct
39 Correct 319 ms 1272 KB Output is correct
40 Correct 296 ms 1036 KB Output is correct
41 Correct 349 ms 796 KB Output is correct
42 Correct 34 ms 768 KB Output is correct
43 Correct 68 ms 744 KB Output is correct
44 Correct 92 ms 988 KB Output is correct
45 Correct 104 ms 684 KB Output is correct
46 Correct 220 ms 684 KB Output is correct
47 Correct 209 ms 684 KB Output is correct
48 Correct 35 ms 744 KB Output is correct
49 Correct 28 ms 952 KB Output is correct