oj.uz

Submission #432574

# Submission time Handle Problem Language Result Execution time Memory
432574 2021-06-18T11:18:37 Z milleniumEeee Stations (IOI20_stations) C++17
36.2265 / 100
 1162 ms 784 KB 
#ifndef EVAL
#include "stub.cpp"
#endif
#include "stations.h"
 
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pii pair<int, int>
#define pb push_back
#define szof(s) (int)s.size()
#define all(s) s.begin(), s.end()
 
using namespace std;
 
const int MAXN = 1005;

vector <int> g[MAXN];
int tin[MAXN], tout[MAXN], tiktak = 0;
int pr[MAXN];

void clean() {
	for (int i = 0; i < MAXN; i++) {
		g[i].clear();
		tin[i] = 0;
		tout[i] = 0;
		pr[i] = 0;
	}
	tiktak = 0;
}


void precalc(int v, int par) {
	tin[v] = ++tiktak;
	pr[v] = par;
	for (int to : g[v]) {
		if (to != par) {
			precalc(to, v);
		}
	}
	tout[v] = tiktak;
}

void up(int v, vector <int> &vec) {
	vec.pb(v);
	if (pr[v] != -1) {
		up(pr[v], vec);
	}
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	clean(); // на всякий случай
	for (int i = 0; i <= n - 2; i++) {
		int x = u[i];
		int y = v[i];
		g[x].pb(y);
		g[y].pb(x);
	}
	precalc(0, -1);
	vector <int> labels(n);
	for (int i = 0; i < n; i++) {
		// 10 битов для tin
		// 10 битов для tout
		labels[i] = tin[i] + (tout[i] << 10);
	}
	return labels;
}

bool father(int a, int b) {
	int tin_a = 0;
	int tout_a = 0;
	int tin_b = 0;
	int tout_b = 0;
	for (int i = 0; i < 30; i++) {
		if (a & (1 << i)) {
			if (i <= 9) {
				tin_a += (1 << i);
			} else {
				tout_a += (1 << (i - 10));
			}
		}
		if (b & (1 << i)) {
			if (i <= 9) {
				tin_b += (1 << i);
			} else {
				tout_b += (1 << (i - 10));
			}
		}
	}
	return tin_a <= tin_b && tout_b <= tout_a;
}

int find_next_station(int s, int t, vector<int> c) {
	if (father(s, t)) {
		for (int el : c) {
			if (father(s, el) && father(el, t)) {
				return el;
			}
		}
	}
	for (int el : c) {
		if (father(el, s)) {
			return el;
		}
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:106:1: warning: control reaches end of non-void function [-Wreturn-type]
  106 | }
      | ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 316 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=0, label=10241
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 316 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=0, label=1019905
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 316 KB Invalid labels (values out of range). scenario=1, k=1000000, vertex=0, label=1020929
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 932 ms 528 KB Output is correct
2 Correct 723 ms 508 KB Output is correct
3 Correct 685 ms 516 KB Output is correct
4 Correct 3 ms 400 KB Output is correct
5 Correct 3 ms 576 KB Output is correct
6 Correct 2 ms 592 KB Output is correct
7 Correct 671 ms 400 KB Output is correct
8 Correct 1162 ms 496 KB Output is correct
9 Correct 634 ms 492 KB Output is correct
10 Correct 600 ms 400 KB Output is correct
11 Correct 6 ms 468 KB Output is correct
12 Correct 7 ms 596 KB Output is correct
13 Correct 6 ms 480 KB Output is correct
14 Correct 4 ms 572 KB Output is correct
15 Correct 3 ms 596 KB Output is correct
16 Correct 602 ms 516 KB Output is correct
17 Correct 546 ms 516 KB Output is correct
18 Correct 486 ms 556 KB Output is correct
19 Correct 534 ms 520 KB Output is correct
20 Correct 508 ms 516 KB Output is correct

Subtask #5
26.2265 / 61.0

# Verdict Execution time Memory Grader output
1 Partially correct 616 ms 588 KB Partially correct
2 Partially correct 510 ms 508 KB Partially correct
3 Partially correct 965 ms 400 KB Partially correct
4 Partially correct 658 ms 496 KB Partially correct
5 Partially correct 591 ms 516 KB Partially correct
6 Partially correct 491 ms 508 KB Partially correct
7 Partially correct 468 ms 528 KB Partially correct
8 Partially correct 3 ms 468 KB Partially correct
9 Partially correct 3 ms 596 KB Partially correct
10 Partially correct 2 ms 596 KB Partially correct
11 Partially correct 450 ms 520 KB Partially correct
12 Partially correct 520 ms 496 KB Partially correct
13 Partially correct 896 ms 512 KB Partially correct
14 Partially correct 663 ms 516 KB Partially correct
15 Partially correct 633 ms 528 KB Partially correct
16 Partially correct 447 ms 648 KB Partially correct
17 Partially correct 633 ms 520 KB Partially correct
18 Partially correct 475 ms 504 KB Partially correct
19 Partially correct 513 ms 776 KB Partially correct
20 Partially correct 508 ms 520 KB Partially correct
21 Partially correct 81 ms 548 KB Partially correct
22 Partially correct 109 ms 692 KB Partially correct
23 Partially correct 130 ms 528 KB Partially correct
24 Partially correct 6 ms 476 KB Partially correct
25 Partially correct 5 ms 596 KB Partially correct
26 Partially correct 6 ms 604 KB Partially correct
27 Partially correct 7 ms 468 KB Partially correct
28 Partially correct 2 ms 468 KB Partially correct
29 Partially correct 514 ms 528 KB Partially correct
30 Partially correct 560 ms 496 KB Partially correct
31 Partially correct 568 ms 504 KB Partially correct
32 Partially correct 545 ms 528 KB Partially correct
33 Partially correct 538 ms 504 KB Partially correct
34 Partially correct 326 ms 516 KB Partially correct
35 Partially correct 443 ms 508 KB Partially correct
36 Partially correct 482 ms 628 KB Partially correct
37 Partially correct 465 ms 620 KB Partially correct
38 Partially correct 531 ms 620 KB Partially correct
39 Partially correct 486 ms 640 KB Partially correct
40 Partially correct 487 ms 628 KB Partially correct
41 Partially correct 511 ms 624 KB Partially correct
42 Partially correct 81 ms 528 KB Partially correct
43 Partially correct 138 ms 656 KB Partially correct
44 Partially correct 146 ms 528 KB Partially correct
45 Partially correct 186 ms 528 KB Partially correct
46 Partially correct 347 ms 596 KB Partially correct
47 Partially correct 365 ms 724 KB Partially correct
48 Partially correct 76 ms 660 KB Partially correct
49 Partially correct 82 ms 784 KB Partially correct