oj.uz

Submission #828280

# Submission time Handle Problem Language Result Execution time Memory
828280 2023-08-17T07:37:17 Z tomruk Stations (IOI20_stations) C++17
100 / 100
 633 ms 824 KB 
#include "stations.h"
#include <bits/stdc++.h>
#define N 1005
using namespace std;
int tin[N],tout[N];
int d[N];
vector<int> adj[N];
int timer = 0;
void dfs(int v,int par){
	tin[v] = timer++;
	for(auto u:adj[v]){
		if(u == par)
			continue;
		d[u] = d[v] + 1;
		dfs(u,v);
	}
	tout[v] = timer++;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	for(int i = 0;i<n;i++){
		adj[i].clear();
	}
	timer = 0;
	for(int i = 0;i<n-1;i++){
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	dfs(0,-1);
	vector<int> ret(n,0);
	vector<int> compress;
	for(int i = 0;i<n;i++){
		if(d[i] & 1)
			ret[i] = tin[i];
		else ret[i] = tout[i];
		compress.push_back(ret[i]);
	}
	sort(compress.begin(),compress.end());
	for(int i = 0;i<n;i++){
		ret[i] = lower_bound(compress.begin(),compress.end(),ret[i]) - compress.begin();
	}
	return ret;
}

int find_next_station(int s, int t, vector<int> c){
	if(c.size() == 1)
		return c[0];
	if(c[0] > s){
		int l = s;
		int r = c[c.size()-2];
		if(t < l || t > r)
			return c.back();
		int x = 1e9;
		for(int i = 0;i<c.size()-1;i++){
			if(c[i] >= t)
				x = min(x,c[i]);
		}
		return x;
	}
	else{
		int l = c[1];
		int r = s;
		if(t < l || t > r)
			return c[0];
		int x = 0;
		for(int i = 1;i<c.size();i++){
			if(c[i] <= t)
				x = max(x,c[i]);
		}
		return x;
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:53:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |   for(int i = 0;i<c.size()-1;i++){
      |                 ~^~~~~~~~~~~
stations.cpp:65:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |   for(int i = 1;i<c.size();i++){
      |                 ~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 390 ms 656 KB Output is correct
2 Correct 370 ms 660 KB Output is correct
3 Correct 633 ms 516 KB Output is correct
4 Correct 492 ms 416 KB Output is correct
5 Correct 466 ms 524 KB Output is correct
6 Correct 315 ms 536 KB Output is correct
7 Correct 321 ms 532 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 2 ms 492 KB Output is correct
10 Correct 0 ms 620 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 348 ms 528 KB Output is correct
2 Correct 433 ms 528 KB Output is correct
3 Correct 522 ms 548 KB Output is correct
4 Correct 459 ms 528 KB Output is correct
5 Correct 380 ms 524 KB Output is correct
6 Correct 349 ms 544 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 341 ms 640 KB Output is correct
2 Correct 312 ms 548 KB Output is correct
3 Correct 581 ms 532 KB Output is correct
4 Correct 376 ms 544 KB Output is correct
5 Correct 411 ms 548 KB Output is correct
6 Correct 313 ms 656 KB Output is correct
7 Correct 310 ms 548 KB Output is correct
8 Correct 1 ms 500 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 0 ms 620 KB Output is correct
11 Correct 377 ms 532 KB Output is correct
12 Correct 299 ms 652 KB Output is correct
13 Correct 323 ms 676 KB Output is correct
14 Correct 238 ms 532 KB Output is correct
15 Correct 34 ms 620 KB Output is correct
16 Correct 47 ms 596 KB Output is correct
17 Correct 72 ms 728 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 581 ms 524 KB Output is correct
2 Correct 484 ms 420 KB Output is correct
3 Correct 407 ms 548 KB Output is correct
4 Correct 1 ms 628 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 1 ms 620 KB Output is correct
7 Correct 437 ms 544 KB Output is correct
8 Correct 609 ms 524 KB Output is correct
9 Correct 444 ms 420 KB Output is correct
10 Correct 411 ms 548 KB Output is correct
11 Correct 2 ms 500 KB Output is correct
12 Correct 3 ms 492 KB Output is correct
13 Correct 2 ms 620 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 1 ms 500 KB Output is correct
16 Correct 346 ms 416 KB Output is correct
17 Correct 354 ms 548 KB Output is correct
18 Correct 354 ms 548 KB Output is correct
19 Correct 334 ms 544 KB Output is correct
20 Correct 360 ms 544 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 357 ms 656 KB Output is correct
2 Correct 300 ms 668 KB Output is correct
3 Correct 547 ms 548 KB Output is correct
4 Correct 442 ms 520 KB Output is correct
5 Correct 334 ms 592 KB Output is correct
6 Correct 349 ms 548 KB Output is correct
7 Correct 286 ms 544 KB Output is correct
8 Correct 1 ms 620 KB Output is correct
9 Correct 2 ms 628 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 300 ms 528 KB Output is correct
12 Correct 300 ms 548 KB Output is correct
13 Correct 615 ms 544 KB Output is correct
14 Correct 423 ms 516 KB Output is correct
15 Correct 382 ms 544 KB Output is correct
16 Correct 324 ms 548 KB Output is correct
17 Correct 410 ms 544 KB Output is correct
18 Correct 323 ms 652 KB Output is correct
19 Correct 319 ms 648 KB Output is correct
20 Correct 324 ms 548 KB Output is correct
21 Correct 40 ms 576 KB Output is correct
22 Correct 52 ms 572 KB Output is correct
23 Correct 69 ms 672 KB Output is correct
24 Correct 3 ms 496 KB Output is correct
25 Correct 2 ms 628 KB Output is correct
26 Correct 1 ms 628 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 351 ms 544 KB Output is correct
30 Correct 349 ms 528 KB Output is correct
31 Correct 329 ms 416 KB Output is correct
32 Correct 341 ms 420 KB Output is correct
33 Correct 300 ms 528 KB Output is correct
34 Correct 225 ms 652 KB Output is correct
35 Correct 258 ms 652 KB Output is correct
36 Correct 326 ms 660 KB Output is correct
37 Correct 350 ms 720 KB Output is correct
38 Correct 240 ms 644 KB Output is correct
39 Correct 334 ms 788 KB Output is correct
40 Correct 318 ms 528 KB Output is correct
41 Correct 315 ms 640 KB Output is correct
42 Correct 52 ms 544 KB Output is correct
43 Correct 74 ms 700 KB Output is correct
44 Correct 90 ms 544 KB Output is correct
45 Correct 87 ms 604 KB Output is correct
46 Correct 225 ms 544 KB Output is correct
47 Correct 190 ms 544 KB Output is correct
48 Correct 44 ms 720 KB Output is correct
49 Correct 43 ms 824 KB Output is correct