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Submission #431961

# Submission time Handle Problem Language Result Execution time Memory
431961 2021-06-17T17:44:08 Z Ozy Stations (IOI20_stations) C++17
100 / 100
 920 ms 784 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define rep(i,a,b) for(int i = (a); i <= (b); i++)
#define repa(i,a,b) for(int i = (a); i >= (b); i--)
#define debug(a) cout << #a << " = " << a << endl
#define debugsl(a) cout << #a << " = " << a << ", "

#define MAX 1000

lli act,ini,fin;
vector<lli> hijos[MAX+2];
vector<int> res;

void DFS (lli pos, lli padre, lli prof) {
    if ((prof%2) == 0) res[pos] = act++;
    for (auto h : hijos[pos]) {
        if (h == padre) continue;
        DFS(h,pos,prof+1);
    }
    if ((prof%2) == 1) res[pos] = act++;
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {

    rep(i,0,n-1) hijos[i].clear();

    vector<int>().swap(res);
    res.resize(n);

	rep(i,0,n-2) {
        hijos[u[i]].push_back(v[i]);
        hijos[v[i]].push_back(u[i]);
	}

	act = 0;
	DFS(0,0,0);

	return res;
}

int find_next_station(int s, int t, std::vector<int> c) {

    if (c.size() == 1) return c[0];

    if (s == 0) rep (i,0,c.size()-1) if (t <= c[i]) return c[i];

    if (s < c[0]) {
        ini = s;
        fin = c[c.size()-2];

        if (t < ini || t > fin) return c[c.size()-1];

        rep (i,0,c.size()-2) if (t <= c[i]) return c[i];
    }
    else {
        ini = c[1];
        fin = s;

        if (t < ini || t > fin) return c[0];
        repa (i,c.size()-1,1) if (t >= c[i]) return c[i];
    }

    return c[0];
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:5:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(i,a,b) for(int i = (a); i <= (b); i++)
      |                                       ^
stations.cpp:47:17: note: in expansion of macro 'rep'
   47 |     if (s == 0) rep (i,0,c.size()-1) if (t <= c[i]) return c[i];
      |                 ^~~
stations.cpp:5:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(i,a,b) for(int i = (a); i <= (b); i++)
      |                                       ^
stations.cpp:55:9: note: in expansion of macro 'rep'
   55 |         rep (i,0,c.size()-2) if (t <= c[i]) return c[i];
      |         ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 531 ms 528 KB Output is correct
2 Correct 409 ms 512 KB Output is correct
3 Correct 843 ms 488 KB Output is correct
4 Correct 635 ms 516 KB Output is correct
5 Correct 579 ms 528 KB Output is correct
6 Correct 465 ms 528 KB Output is correct
7 Correct 438 ms 528 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 5 ms 468 KB Output is correct
10 Correct 2 ms 476 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 417 ms 620 KB Output is correct
2 Correct 523 ms 512 KB Output is correct
3 Correct 920 ms 400 KB Output is correct
4 Correct 630 ms 508 KB Output is correct
5 Correct 550 ms 512 KB Output is correct
6 Correct 436 ms 512 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 552 ms 508 KB Output is correct
2 Correct 450 ms 512 KB Output is correct
3 Correct 877 ms 412 KB Output is correct
4 Correct 651 ms 400 KB Output is correct
5 Correct 587 ms 400 KB Output is correct
6 Correct 471 ms 516 KB Output is correct
7 Correct 460 ms 516 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 4 ms 480 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 569 ms 400 KB Output is correct
12 Correct 437 ms 632 KB Output is correct
13 Correct 481 ms 736 KB Output is correct
14 Correct 466 ms 528 KB Output is correct
15 Correct 58 ms 400 KB Output is correct
16 Correct 66 ms 528 KB Output is correct
17 Correct 102 ms 528 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 866 ms 528 KB Output is correct
2 Correct 619 ms 400 KB Output is correct
3 Correct 555 ms 400 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 3 ms 476 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 616 ms 512 KB Output is correct
8 Correct 884 ms 400 KB Output is correct
9 Correct 667 ms 512 KB Output is correct
10 Correct 606 ms 412 KB Output is correct
11 Correct 6 ms 468 KB Output is correct
12 Correct 6 ms 480 KB Output is correct
13 Correct 5 ms 476 KB Output is correct
14 Correct 4 ms 468 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 447 ms 528 KB Output is correct
17 Correct 524 ms 540 KB Output is correct
18 Correct 534 ms 656 KB Output is correct
19 Correct 487 ms 400 KB Output is correct
20 Correct 510 ms 512 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 538 ms 644 KB Output is correct
2 Correct 469 ms 528 KB Output is correct
3 Correct 868 ms 504 KB Output is correct
4 Correct 678 ms 508 KB Output is correct
5 Correct 601 ms 400 KB Output is correct
6 Correct 462 ms 500 KB Output is correct
7 Correct 471 ms 508 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 5 ms 468 KB Output is correct
10 Correct 2 ms 524 KB Output is correct
11 Correct 421 ms 528 KB Output is correct
12 Correct 476 ms 508 KB Output is correct
13 Correct 860 ms 400 KB Output is correct
14 Correct 622 ms 400 KB Output is correct
15 Correct 540 ms 512 KB Output is correct
16 Correct 491 ms 512 KB Output is correct
17 Correct 619 ms 508 KB Output is correct
18 Correct 424 ms 608 KB Output is correct
19 Correct 476 ms 740 KB Output is correct
20 Correct 428 ms 512 KB Output is correct
21 Correct 54 ms 528 KB Output is correct
22 Correct 99 ms 528 KB Output is correct
23 Correct 115 ms 528 KB Output is correct
24 Correct 7 ms 476 KB Output is correct
25 Correct 6 ms 468 KB Output is correct
26 Correct 7 ms 468 KB Output is correct
27 Correct 3 ms 476 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 516 ms 508 KB Output is correct
30 Correct 481 ms 508 KB Output is correct
31 Correct 544 ms 512 KB Output is correct
32 Correct 443 ms 400 KB Output is correct
33 Correct 500 ms 400 KB Output is correct
34 Correct 314 ms 492 KB Output is correct
35 Correct 390 ms 624 KB Output is correct
36 Correct 431 ms 744 KB Output is correct
37 Correct 455 ms 740 KB Output is correct
38 Correct 441 ms 520 KB Output is correct
39 Correct 431 ms 660 KB Output is correct
40 Correct 473 ms 648 KB Output is correct
41 Correct 469 ms 632 KB Output is correct
42 Correct 60 ms 528 KB Output is correct
43 Correct 122 ms 604 KB Output is correct
44 Correct 146 ms 508 KB Output is correct
45 Correct 159 ms 644 KB Output is correct
46 Correct 255 ms 500 KB Output is correct
47 Correct 306 ms 528 KB Output is correct
48 Correct 61 ms 768 KB Output is correct
49 Correct 61 ms 784 KB Output is correct