oj.uz

Submission #578371

# Submission time Handle Problem Language Result Execution time Memory
578371 2022-06-16T13:11:36 Z SlavicG Stations (IOI20_stations) C++17
100 / 100
 952 ms 816 KB 
#include "stations.h"
#include "bits/stdc++.h"
using namespace std;

#define sz(a) (int)a.size()
const int N = 1000;
vector<int> adj[N];
int in[N], out[N], tt = 0, depth[N];
void dfs(int u, int par) {
    in[u] = tt++;
    for(int v: adj[u]) {
        if(v == par) continue;
        depth[v] = depth[u] ^ 1;
        dfs(v, u);
    }
    out[u] = tt++;
}
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();
        tt = 0;
        out[i] = 0, in[i] = 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);
	for (int i = 0; i < n; i++) {
		labels[i] = (depth[i] ? out[i] : in[i]);
	}
	vector<int> b = labels;
	sort(b.begin(), b.end());
	for(int i = 0; i < n; ++i) {
        labels[i] = lower_bound(b.begin(), b.end(), labels[i]) - b.begin();
	}
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
    int in_s, out_s;
    bool dd = 0;
    if(s == 0) {
        in_s = 0;
        out_s = c.back() + 1;
    } else {
        if(s < c[0]) {
            dd = 0;
            in_s = s;
            if(sz(c) >= 2) out_s = c[sz(c) - 2] + 1;
            else out_s = in_s;
        } else {
            dd = 1;
            out_s = s;
            if(sz(c) >= 2) in_s = c[1] - 1;
            else in_s = out_s;
        }
    }

    if(dd == 0) {
        if(in_s <= t && t <= out_s) {
            for(auto x: c) {
                if(x >= t) return x;
            }
        } else return c.back();
    } else {
        if(in_s <= t && t <= out_s) {
            reverse(c.begin(), c.end());
            for(auto x: c) {
                if(x <= t) return x;
            }
        } else return c[0];
    }
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:75:1: warning: control reaches end of non-void function [-Wreturn-type]
   75 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 549 ms 544 KB Output is correct
2 Correct 458 ms 668 KB Output is correct
3 Correct 951 ms 416 KB Output is correct
4 Correct 596 ms 420 KB Output is correct
5 Correct 677 ms 520 KB Output is correct
6 Correct 418 ms 676 KB Output is correct
7 Correct 473 ms 532 KB Output is correct
8 Correct 2 ms 628 KB Output is correct
9 Correct 4 ms 628 KB Output is correct
10 Correct 0 ms 492 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 404 ms 528 KB Output is correct
2 Correct 615 ms 524 KB Output is correct
3 Correct 898 ms 416 KB Output is correct
4 Correct 778 ms 544 KB Output is correct
5 Correct 603 ms 536 KB Output is correct
6 Correct 380 ms 536 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 559 ms 704 KB Output is correct
2 Correct 435 ms 544 KB Output is correct
3 Correct 947 ms 544 KB Output is correct
4 Correct 582 ms 524 KB Output is correct
5 Correct 541 ms 548 KB Output is correct
6 Correct 395 ms 528 KB Output is correct
7 Correct 396 ms 548 KB Output is correct
8 Correct 2 ms 620 KB Output is correct
9 Correct 5 ms 608 KB Output is correct
10 Correct 2 ms 624 KB Output is correct
11 Correct 636 ms 532 KB Output is correct
12 Correct 583 ms 648 KB Output is correct
13 Correct 477 ms 636 KB Output is correct
14 Correct 398 ms 540 KB Output is correct
15 Correct 59 ms 596 KB Output is correct
16 Correct 64 ms 536 KB Output is correct
17 Correct 147 ms 732 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 743 ms 532 KB Output is correct
2 Correct 536 ms 548 KB Output is correct
3 Correct 593 ms 532 KB Output is correct
4 Correct 4 ms 620 KB Output is correct
5 Correct 4 ms 628 KB Output is correct
6 Correct 2 ms 620 KB Output is correct
7 Correct 678 ms 532 KB Output is correct
8 Correct 820 ms 612 KB Output is correct
9 Correct 567 ms 532 KB Output is correct
10 Correct 525 ms 444 KB Output is correct
11 Correct 3 ms 620 KB Output is correct
12 Correct 3 ms 620 KB Output is correct
13 Correct 4 ms 620 KB Output is correct
14 Correct 3 ms 628 KB Output is correct
15 Correct 2 ms 620 KB Output is correct
16 Correct 523 ms 536 KB Output is correct
17 Correct 560 ms 536 KB Output is correct
18 Correct 524 ms 536 KB Output is correct
19 Correct 477 ms 532 KB Output is correct
20 Correct 497 ms 536 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 578 ms 644 KB Output is correct
2 Correct 412 ms 532 KB Output is correct
3 Correct 952 ms 416 KB Output is correct
4 Correct 675 ms 544 KB Output is correct
5 Correct 695 ms 548 KB Output is correct
6 Correct 514 ms 664 KB Output is correct
7 Correct 338 ms 544 KB Output is correct
8 Correct 3 ms 620 KB Output is correct
9 Correct 3 ms 620 KB Output is correct
10 Correct 2 ms 620 KB Output is correct
11 Correct 600 ms 548 KB Output is correct
12 Correct 559 ms 528 KB Output is correct
13 Correct 937 ms 528 KB Output is correct
14 Correct 540 ms 536 KB Output is correct
15 Correct 543 ms 416 KB Output is correct
16 Correct 483 ms 528 KB Output is correct
17 Correct 573 ms 540 KB Output is correct
18 Correct 381 ms 620 KB Output is correct
19 Correct 426 ms 664 KB Output is correct
20 Correct 411 ms 544 KB Output is correct
21 Correct 50 ms 620 KB Output is correct
22 Correct 73 ms 572 KB Output is correct
23 Correct 105 ms 672 KB Output is correct
24 Correct 5 ms 620 KB Output is correct
25 Correct 4 ms 500 KB Output is correct
26 Correct 3 ms 492 KB Output is correct
27 Correct 3 ms 620 KB Output is correct
28 Correct 1 ms 620 KB Output is correct
29 Correct 517 ms 524 KB Output is correct
30 Correct 553 ms 548 KB Output is correct
31 Correct 590 ms 536 KB Output is correct
32 Correct 578 ms 532 KB Output is correct
33 Correct 402 ms 524 KB Output is correct
34 Correct 433 ms 548 KB Output is correct
35 Correct 408 ms 764 KB Output is correct
36 Correct 452 ms 652 KB Output is correct
37 Correct 419 ms 528 KB Output is correct
38 Correct 402 ms 660 KB Output is correct
39 Correct 381 ms 772 KB Output is correct
40 Correct 425 ms 764 KB Output is correct
41 Correct 371 ms 788 KB Output is correct
42 Correct 44 ms 668 KB Output is correct
43 Correct 102 ms 768 KB Output is correct
44 Correct 129 ms 624 KB Output is correct
45 Correct 153 ms 544 KB Output is correct
46 Correct 272 ms 544 KB Output is correct
47 Correct 313 ms 616 KB Output is correct
48 Correct 65 ms 676 KB Output is correct
49 Correct 55 ms 816 KB Output is correct