oj.uz

Submission #546713

# Submission time Handle Problem Language Result Execution time Memory
546713 2022-04-08T09:08:51 Z cig32 Stations (IOI20_stations) C++17
100 / 100
 806 ms 792 KB 
#include "stations.h"
#include <cstdio>
#include <cassert>
#include <map>
#include <vector>
#include <algorithm>
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v);
int find_next_station(int s, int t, std::vector<int> c);
std::vector<int> adj[1024];
int ans[1024];
int sz[1024];
void dfs(int node, int prv, int l, int r, int dep) {
  if(dep & 1) {
    ans[node] = r;
    r--;
  }
  else {
    ans[node] = l;
    l++;
  }
  for(int x: adj[node]) {
    if(x != prv) {
      dfs(x, node, l, l + sz[x] - 1, dep + 1);
      l += sz[x];
    }
  }
}
void fuck(int node, int prv) {
  sz[node] = 1;
  for(int x: adj[node]) {
    if(x != prv) {
      fuck(x, node);
      sz[node] += sz[x];
    }
  }
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	std::vector<int> labels(n);
  for(int i=0; i<n; i++) {
    adj[i].clear();
  }
	for(int i=0; i<n-1; i++) {
    adj[u[i]].push_back(v[i]);
    adj[v[i]].push_back(u[i]);
  }
  fuck(0, -1);
  dfs(0, -1, 0, n-1, 0);
  for(int i=0; i<n; i++) labels[i] = ans[i];
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	if(c[0] > s) { // Current node is an even depth node
    for(int i=0; i<c.size() - 1; i++) {
      if(s < t && t <= c[i]) return c[i];
      s = c[i];
    }
    return c[c.size() - 1];
  }
  else { // Current node is an odd depth node
    for(int i=c.size()-1; i>0; i--) {
      if(c[i] <= t && t < s) return c[i];
      s = c[i];
    }
    return c[0];
  }
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:54:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for(int i=0; i<c.size() - 1; i++) {
      |                  ~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 437 ms 648 KB Output is correct
2 Correct 399 ms 684 KB Output is correct
3 Correct 684 ms 416 KB Output is correct
4 Correct 515 ms 524 KB Output is correct
5 Correct 488 ms 420 KB Output is correct
6 Correct 415 ms 544 KB Output is correct
7 Correct 349 ms 548 KB Output is correct
8 Correct 2 ms 500 KB Output is correct
9 Correct 4 ms 492 KB Output is correct
10 Correct 0 ms 496 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 410 ms 512 KB Output is correct
2 Correct 453 ms 512 KB Output is correct
3 Correct 744 ms 420 KB Output is correct
4 Correct 544 ms 420 KB Output is correct
5 Correct 499 ms 524 KB Output is correct
6 Correct 364 ms 548 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 475 ms 544 KB Output is correct
2 Correct 390 ms 656 KB Output is correct
3 Correct 693 ms 416 KB Output is correct
4 Correct 534 ms 432 KB Output is correct
5 Correct 449 ms 528 KB Output is correct
6 Correct 355 ms 548 KB Output is correct
7 Correct 357 ms 516 KB Output is correct
8 Correct 2 ms 500 KB Output is correct
9 Correct 3 ms 500 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 501 ms 436 KB Output is correct
12 Correct 411 ms 756 KB Output is correct
13 Correct 397 ms 548 KB Output is correct
14 Correct 344 ms 548 KB Output is correct
15 Correct 38 ms 456 KB Output is correct
16 Correct 53 ms 612 KB Output is correct
17 Correct 83 ms 688 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 772 ms 420 KB Output is correct
2 Correct 545 ms 420 KB Output is correct
3 Correct 504 ms 416 KB Output is correct
4 Correct 1 ms 500 KB Output is correct
5 Correct 3 ms 500 KB Output is correct
6 Correct 0 ms 500 KB Output is correct
7 Correct 496 ms 524 KB Output is correct
8 Correct 806 ms 516 KB Output is correct
9 Correct 620 ms 516 KB Output is correct
10 Correct 472 ms 416 KB Output is correct
11 Correct 4 ms 492 KB Output is correct
12 Correct 4 ms 500 KB Output is correct
13 Correct 4 ms 492 KB Output is correct
14 Correct 2 ms 492 KB Output is correct
15 Correct 2 ms 500 KB Output is correct
16 Correct 452 ms 416 KB Output is correct
17 Correct 409 ms 416 KB Output is correct
18 Correct 464 ms 520 KB Output is correct
19 Correct 448 ms 420 KB Output is correct
20 Correct 408 ms 420 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 440 ms 644 KB Output is correct
2 Correct 367 ms 544 KB Output is correct
3 Correct 737 ms 420 KB Output is correct
4 Correct 496 ms 520 KB Output is correct
5 Correct 486 ms 420 KB Output is correct
6 Correct 386 ms 548 KB Output is correct
7 Correct 368 ms 520 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 3 ms 492 KB Output is correct
10 Correct 1 ms 500 KB Output is correct
11 Correct 368 ms 508 KB Output is correct
12 Correct 471 ms 544 KB Output is correct
13 Correct 780 ms 524 KB Output is correct
14 Correct 553 ms 420 KB Output is correct
15 Correct 504 ms 416 KB Output is correct
16 Correct 387 ms 544 KB Output is correct
17 Correct 473 ms 644 KB Output is correct
18 Correct 360 ms 656 KB Output is correct
19 Correct 411 ms 792 KB Output is correct
20 Correct 377 ms 536 KB Output is correct
21 Correct 48 ms 472 KB Output is correct
22 Correct 62 ms 552 KB Output is correct
23 Correct 93 ms 544 KB Output is correct
24 Correct 3 ms 492 KB Output is correct
25 Correct 3 ms 500 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 492 KB Output is correct
28 Correct 2 ms 488 KB Output is correct
29 Correct 415 ms 420 KB Output is correct
30 Correct 464 ms 520 KB Output is correct
31 Correct 443 ms 420 KB Output is correct
32 Correct 395 ms 520 KB Output is correct
33 Correct 391 ms 420 KB Output is correct
34 Correct 265 ms 544 KB Output is correct
35 Correct 345 ms 760 KB Output is correct
36 Correct 362 ms 744 KB Output is correct
37 Correct 400 ms 704 KB Output is correct
38 Correct 378 ms 604 KB Output is correct
39 Correct 407 ms 516 KB Output is correct
40 Correct 394 ms 544 KB Output is correct
41 Correct 416 ms 652 KB Output is correct
42 Correct 57 ms 600 KB Output is correct
43 Correct 73 ms 544 KB Output is correct
44 Correct 114 ms 524 KB Output is correct
45 Correct 114 ms 524 KB Output is correct
46 Correct 213 ms 548 KB Output is correct
47 Correct 230 ms 520 KB Output is correct
48 Correct 57 ms 576 KB Output is correct
49 Correct 58 ms 744 KB Output is correct