oj.uz

Submission #929500

# Submission time Handle Problem Language Result Execution time Memory
929500 2024-02-18T05:59:58 Z horiseun Meetings (JOI19_meetings) C++17
100 / 100
 1004 ms 1016 KB 
#include <iostream>
#include <vector>
#include <map>
#include <tuple>
#include <random>
#include <cassert>
#include <numeric>
#include <algorithm>
#include "meetings.h"
using namespace std;

#define f first
#define s second

vector<pair<int, int>> ans;
mt19937 rd(4315143);

int query(int x, int y, int z) {
	if (x == y || x == z) return x;
	if (y == z) return y;
	return Query(x, y, z);
}

void solve(vector<int> v) {
	if (v.size() <= 1) return;
	shuffle(v.begin(), v.end(), rd);
	int x = v[0], y = v[1];
	for (int i = 2, ret; i < v.size(); i++) {
		ret = query(x, y, v[i]);
		if (ret == x) {
			x = v[i];
		} else if (ret == y) {
			y = v[i];
		}
	}
	map<int, vector<int>> groups;
	for (int i = 0, ret; i < v.size(); i++) {
		if (v[i] == x || v[i] == y) continue;
		ret = query(x, y, v[i]);
		groups[ret].push_back(v[i]);
	}
	vector<int> curr;
	curr.push_back(x);
	curr.push_back(y);
	for (pair<int, vector<int>> g : groups) {
		curr.push_back(g.f);
	}
	sort(curr.begin(), curr.end(), [&] (int a, int b) {
		int ret = query(x, a, b);
		return ret == a;
	});
	for (int i = 0; i < curr.size() - 1; i++) {
		ans.push_back({curr[i], curr[i + 1]});
	}
	for (pair<int, vector<int>> g : groups) {
		solve(g.s);
	}
}

void Solve(int N) {
	vector<int> tmp(N);
	iota(tmp.begin(), tmp.end(), 0);
	solve(tmp);
	for (auto [x, y] : ans) {
		assert(x != y);
		if (y < x) swap(x, y);
		Bridge(x, y);
	}
}

Compilation message

meetings.cpp: In function 'void solve(std::vector<int>)':
meetings.cpp:28:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |  for (int i = 2, ret; i < v.size(); i++) {
      |                       ~~^~~~~~~~~~
meetings.cpp:37:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |  for (int i = 0, ret; i < v.size(); i++) {
      |                       ~~^~~~~~~~~~
meetings.cpp:52:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |  for (int i = 0; i < curr.size() - 1; i++) {
      |                  ~~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 560 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 508 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 504 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 504 KB Output is correct
13 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 560 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 508 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 504 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 504 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 500 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 500 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 484 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 0 ms 344 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 560 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 508 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 504 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 504 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 500 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 500 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 484 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 0 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 7 ms 344 KB Output is correct
31 Correct 5 ms 344 KB Output is correct
32 Correct 8 ms 480 KB Output is correct
33 Correct 14 ms 344 KB Output is correct
34 Correct 16 ms 508 KB Output is correct
35 Correct 16 ms 516 KB Output is correct
36 Correct 5 ms 504 KB Output is correct
37 Correct 16 ms 344 KB Output is correct
38 Correct 15 ms 344 KB Output is correct
39 Correct 13 ms 344 KB Output is correct

Subtask #4
71.0 / 71.0

# Verdict Execution time Memory Grader output
1 Correct 352 ms 716 KB Output is correct
2 Correct 322 ms 712 KB Output is correct
3 Correct 569 ms 600 KB Output is correct
4 Correct 422 ms 900 KB Output is correct
5 Correct 312 ms 848 KB Output is correct
6 Correct 322 ms 680 KB Output is correct
7 Correct 518 ms 728 KB Output is correct
8 Correct 708 ms 772 KB Output is correct
9 Correct 678 ms 972 KB Output is correct
10 Correct 599 ms 1016 KB Output is correct
11 Correct 648 ms 776 KB Output is correct
12 Correct 297 ms 828 KB Output is correct
13 Correct 174 ms 756 KB Output is correct
14 Correct 310 ms 912 KB Output is correct
15 Correct 415 ms 672 KB Output is correct
16 Correct 374 ms 740 KB Output is correct
17 Correct 556 ms 772 KB Output is correct
18 Correct 305 ms 736 KB Output is correct
19 Correct 377 ms 724 KB Output is correct
20 Correct 379 ms 948 KB Output is correct
21 Correct 541 ms 976 KB Output is correct
22 Correct 336 ms 852 KB Output is correct
23 Correct 312 ms 656 KB Output is correct
24 Correct 401 ms 660 KB Output is correct
25 Correct 413 ms 600 KB Output is correct
26 Correct 400 ms 720 KB Output is correct
27 Correct 329 ms 920 KB Output is correct
28 Correct 740 ms 848 KB Output is correct
29 Correct 489 ms 748 KB Output is correct
30 Correct 562 ms 860 KB Output is correct
31 Correct 578 ms 960 KB Output is correct
32 Correct 1004 ms 996 KB Output is correct
33 Correct 762 ms 996 KB Output is correct
34 Correct 6 ms 344 KB Output is correct
35 Correct 5 ms 344 KB Output is correct
36 Correct 9 ms 344 KB Output is correct
37 Correct 10 ms 532 KB Output is correct
38 Correct 8 ms 344 KB Output is correct
39 Correct 9 ms 524 KB Output is correct
40 Correct 10 ms 344 KB Output is correct
41 Correct 16 ms 532 KB Output is correct
42 Correct 15 ms 344 KB Output is correct
43 Correct 7 ms 344 KB Output is correct
44 Correct 16 ms 344 KB Output is correct
45 Correct 12 ms 556 KB Output is correct
46 Correct 12 ms 560 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 1 ms 344 KB Output is correct
50 Correct 1 ms 344 KB Output is correct
51 Correct 1 ms 344 KB Output is correct
52 Correct 1 ms 512 KB Output is correct
53 Correct 0 ms 344 KB Output is correct
54 Correct 1 ms 344 KB Output is correct
55 Correct 1 ms 344 KB Output is correct
56 Correct 1 ms 504 KB Output is correct
57 Correct 1 ms 516 KB Output is correct
58 Correct 1 ms 344 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 0 ms 344 KB Output is correct
61 Correct 0 ms 344 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 1 ms 344 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 1 ms 344 KB Output is correct
67 Correct 1 ms 504 KB Output is correct
68 Correct 0 ms 344 KB Output is correct
69 Correct 1 ms 480 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 1 ms 344 KB Output is correct
72 Correct 0 ms 344 KB Output is correct