oj.uz

Submission #568811

# Submission time Handle Problem Language Result Execution time Memory
568811 2022-05-26T08:27:01 Z _karan_gandhi Swapping Cities (APIO20_swap) C++17
37 / 100
 2000 ms 19860 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define all(v) v.begin(), v.end()
#define endl '\n'
#define pl(var) " [" << #var << ": " << (var) << "] "

template<typename A, typename B> ostream& operator<<(ostream &cout, pair<A, B> const &p) { return cout << "[" << p.first << ", " << p.second << "]"; }
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v) { cout << "["; for(int i = 0; i < (int)v.size(); i++) {if (i) cout << ", "; cout << v[i];} return cout << "]";}
template<typename A, typename B> istream& operator>>(istream& cin, pair<A, B> &p) { cin >> p.first; return cin >> p.second; }

struct DSU { // Sorry UFDS
	vector<int> p, s, degree;
	vector<bool> swappable;
	int components;

	void init(int n) {
		p = vector<int>(n);
		iota(all(p), 0);
		s = vector<int>(n, 1);
		swappable = vector<bool>(n, 0);
		degree = vector<int>(n, 0);
		components = n;
	}

	int get(int x) {
		return p[x] = (p[x] == x ? x : get(p[x]));
	}

	void unite(int a, int b) {
		degree[a]++;
		degree[b]++;
		bool _swappable = 0;
		if (degree[a] >= 3 || degree[b] >= 3) _swappable = 1;

		a = get(a);
		b = get(b);

		if (a == b) {
			swappable[a] = 1;
			return;
		}

		if (s[a] > s[b]) swap(a, b);


		p[a] = b;
		s[b] += s[a];
		swappable[b] = (swappable[a] | swappable[b] | _swappable);
		components--;
	}

	bool same_set(int a, int b) {
		return get(a) == get(b);
	}

	int size(int x) {
		return s[get(x)];
	}

	bool is_swappable(int a, int b) {
		return same_set(a, b) && swappable[get(a)] && swappable[get(b)];
	}
};

int n, m;
vector<vector<pair<int, int>>> adj;
vector<pair<int, pair<int, int>>> edges;
int inf = 1e9 + 7;

void init(int N, int M, vector<int> U, vector<int> V, vector<int> W) {
	n = N;
	m = M;
	adj.resize(n);

	for (int i = 0; i < m; i++) {
		adj[U[i]].emplace_back(V[i], W[i]);
		adj[V[i]].emplace_back(U[i], W[i]);
		edges.emplace_back(W[i], make_pair(U[i], V[i]));
	}

	sort(all(edges));
}

int getMinimumFuelCapacity(int x, int y) {
	int ptr = 0;
	DSU dsu;
	dsu.init(n);
	// cout << pl(x) << pl(y) << endl;
	while (!dsu.is_swappable(x, y) && ptr < m) {
		// cout << pl(ptr) << pl(dsu.swappable) << pl(dsu.p) << pl(dsu.degree) << endl;
		// cout << pl(edges[ptr]) << endl;
		dsu.unite(edges[ptr].second.first, edges[ptr].second.second);
		ptr++;
	}
	// cout << pl(ptr) << pl(dsu.swappable) << pl(dsu.p) << pl(dsu.degree) << endl;

	if (!dsu.is_swappable(x, y)) return -1;
	// if (ptr == m && !dsu.swappable[dsu) return -1;

	return edges[ptr - 1].first;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 49 ms 7832 KB Output is correct
10 Correct 96 ms 9036 KB Output is correct
11 Correct 90 ms 8896 KB Output is correct
12 Correct 94 ms 9308 KB Output is correct
13 Correct 75 ms 9220 KB Output is correct
14 Execution timed out 2087 ms 7936 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Execution timed out 2095 ms 11748 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 320 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 2 ms 444 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 476 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 2 ms 468 KB Output is correct
27 Correct 1 ms 316 KB Output is correct
28 Correct 2 ms 468 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 49 ms 7832 KB Output is correct
11 Correct 96 ms 9036 KB Output is correct
12 Correct 90 ms 8896 KB Output is correct
13 Correct 94 ms 9308 KB Output is correct
14 Correct 75 ms 9220 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 320 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 2 ms 444 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 476 KB Output is correct
30 Correct 2 ms 468 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 1 ms 316 KB Output is correct
33 Correct 2 ms 468 KB Output is correct
34 Correct 9 ms 1932 KB Output is correct
35 Correct 92 ms 11104 KB Output is correct
36 Correct 83 ms 11120 KB Output is correct
37 Correct 91 ms 11108 KB Output is correct
38 Correct 92 ms 11044 KB Output is correct
39 Correct 76 ms 10984 KB Output is correct
40 Correct 75 ms 10300 KB Output is correct
41 Correct 84 ms 11396 KB Output is correct
42 Correct 76 ms 11136 KB Output is correct
43 Correct 85 ms 11132 KB Output is correct
44 Correct 100 ms 11928 KB Output is correct
45 Correct 103 ms 15932 KB Output is correct
46 Correct 82 ms 11068 KB Output is correct
47 Correct 85 ms 11128 KB Output is correct
48 Correct 104 ms 12048 KB Output is correct
49 Correct 70 ms 13564 KB Output is correct
50 Correct 60 ms 10328 KB Output is correct
51 Correct 93 ms 12984 KB Output is correct
52 Correct 123 ms 17324 KB Output is correct
53 Correct 135 ms 18308 KB Output is correct
54 Correct 168 ms 19860 KB Output is correct
55 Correct 79 ms 11140 KB Output is correct
56 Correct 150 ms 17840 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 49 ms 7832 KB Output is correct
10 Correct 96 ms 9036 KB Output is correct
11 Correct 90 ms 8896 KB Output is correct
12 Correct 94 ms 9308 KB Output is correct
13 Correct 75 ms 9220 KB Output is correct
14 Execution timed out 2087 ms 7936 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 49 ms 7832 KB Output is correct
11 Correct 96 ms 9036 KB Output is correct
12 Correct 90 ms 8896 KB Output is correct
13 Correct 94 ms 9308 KB Output is correct
14 Correct 75 ms 9220 KB Output is correct
15 Execution timed out 2087 ms 7936 KB Time limit exceeded
16 Halted 0 ms 0 KB -