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Submission #938175

# Submission time Handle Problem Language Result Execution time Memory
938175 2024-03-05T01:38:39 Z IBory Swapping Cities (APIO20_swap) C++17
17 / 100
 2000 ms 45792 KB 
#include "swap.h"
#include <bits/stdc++.h>
#define pii pair<int, int>
using namespace std;

const int MAX = 200007;
int N, M, Z[MAX], D[MAX];
bool isLine;
vector<tuple<int, int, int>> E;
vector<pii> R[MAX], T[MAX], C[MAX];

void Clear() {
	for (int i = 0; i < MAX; ++i) {
		R[i].clear();
		T[i].clear();
		C[i].clear();
		R[i].emplace_back(-1, i);
		T[i].emplace_back(-1, 0);
		C[i].emplace_back(-1, 0);
	}
	memset(D, 0, sizeof(D));
	fill(Z, Z + MAX, 1);
}

int Find(int n, int t) {
	int tr = R[n].back().second;
	if (T[n].back().second && !T[tr].back().second) T[tr].emplace_back(t, 1);
	if (C[n].back().second && !C[tr].back().second) C[tr].emplace_back(t, 1);
	if (n == tr) return n;
	return Find(tr, t);
}

void Union(int a, int b, int t) {
	if (Z[a] > Z[b]) swap(a, b);
	if (++D[a] == 3 && !T[a].back().second) T[a].emplace_back(t, 1);
	if (++D[b] == 3 && !T[b].back().second) T[b].emplace_back(t, 1);
	a = Find(a, t), b = Find(b, t);
	if (a == b) {
		if (!C[a].back().second) C[a].emplace_back(t, 1);
		return;
	}
	Z[b] += Z[a];
	R[a].emplace_back(t, b);
	if (T[a].back().second && !T[b].back().second) T[b].emplace_back(t, 1);
	if (C[a].back().second && !C[b].back().second) C[b].emplace_back(t, 1);
}

int TFind(vector<pii>& S, int t) {
	auto it = upper_bound(S.begin(), S.end(), pii{t, 1 << 30});
	return (*--it).second;
}

int getMinimumFuelCapacity(int x, int y) {
	if (isLine) return -1;

	int l = -1, r = M - 1;
	while (l + 1 < r) {
		int mid = (l + r) >> 1;
		int rx = x, ry = y;
		while (1) {
			int t = TFind(R[rx], mid);
			if (rx == t) break;
			rx = t;
		}
		while (1) {
			int t = TFind(R[ry], mid);
			if (ry == t) break;
			ry = t;
		}
		bool ok = (rx == ry && (TFind(T[rx], mid) || TFind(C[rx], mid)));
		(ok ? r : l) = mid;
	}

	auto [ans, a, b] = E[r];
	return ans;
}

void init(int _N, int _M, vector<int> U, vector<int> V, vector<int> W) {
	N = _N, M = _M;
	for (int i = 0; i < M; ++i) {
		E.emplace_back(W[i], U[i], V[i]);
		D[U[i]]++;
		D[V[i]]++;
	}
	if (N == M + 1 && *max_element(D, D + MAX) <= 2) isLine = 1;
	sort(E.begin(), E.end());

	Clear();
	for (int i = 0; i < M; ++i) {
		auto [_, a, b] = E[i];
		Union(a, b, i);
	}
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 34768 KB Output is correct
2 Correct 31 ms 34640 KB Output is correct
3 Correct 29 ms 34652 KB Output is correct
4 Correct 29 ms 34648 KB Output is correct
5 Correct 29 ms 34896 KB Output is correct
6 Correct 29 ms 34908 KB Output is correct
7 Correct 29 ms 34900 KB Output is correct
8 Correct 28 ms 34896 KB Output is correct
9 Correct 74 ms 39256 KB Output is correct
10 Correct 91 ms 40144 KB Output is correct
11 Correct 84 ms 40132 KB Output is correct
12 Correct 102 ms 40324 KB Output is correct
13 Correct 85 ms 41416 KB Output is correct
14 Correct 80 ms 39628 KB Output is correct
15 Correct 133 ms 44368 KB Output is correct
16 Correct 127 ms 44152 KB Output is correct
17 Correct 142 ms 44492 KB Output is correct
18 Correct 126 ms 45612 KB Output is correct
19 Correct 281 ms 40720 KB Output is correct
20 Correct 529 ms 45384 KB Output is correct
21 Correct 505 ms 45476 KB Output is correct
22 Correct 539 ms 45792 KB Output is correct
23 Execution timed out 2027 ms 45364 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 34768 KB Output is correct
2 Correct 31 ms 34640 KB Output is correct
3 Execution timed out 2005 ms 44628 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 34768 KB Output is correct
2 Correct 31 ms 34640 KB Output is correct
3 Correct 29 ms 34652 KB Output is correct
4 Correct 29 ms 34648 KB Output is correct
5 Correct 29 ms 34896 KB Output is correct
6 Correct 29 ms 34908 KB Output is correct
7 Correct 29 ms 34900 KB Output is correct
8 Correct 28 ms 34896 KB Output is correct
9 Correct 28 ms 34652 KB Output is correct
10 Correct 27 ms 34716 KB Output is correct
11 Correct 28 ms 34908 KB Output is correct
12 Correct 28 ms 34900 KB Output is correct
13 Correct 28 ms 34908 KB Output is correct
14 Correct 28 ms 34900 KB Output is correct
15 Correct 28 ms 34904 KB Output is correct
16 Correct 29 ms 34772 KB Output is correct
17 Correct 29 ms 34820 KB Output is correct
18 Correct 28 ms 34908 KB Output is correct
19 Correct 28 ms 34916 KB Output is correct
20 Correct 27 ms 34908 KB Output is correct
21 Correct 34 ms 34724 KB Output is correct
22 Correct 29 ms 34964 KB Output is correct
23 Correct 28 ms 34908 KB Output is correct
24 Correct 28 ms 34908 KB Output is correct
25 Correct 28 ms 34900 KB Output is correct
26 Correct 28 ms 34908 KB Output is correct
27 Correct 29 ms 34936 KB Output is correct
28 Correct 30 ms 34964 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 34652 KB Output is correct
2 Correct 28 ms 34768 KB Output is correct
3 Correct 31 ms 34640 KB Output is correct
4 Correct 29 ms 34652 KB Output is correct
5 Correct 29 ms 34648 KB Output is correct
6 Correct 29 ms 34896 KB Output is correct
7 Correct 29 ms 34908 KB Output is correct
8 Correct 29 ms 34900 KB Output is correct
9 Correct 28 ms 34896 KB Output is correct
10 Correct 74 ms 39256 KB Output is correct
11 Correct 91 ms 40144 KB Output is correct
12 Correct 84 ms 40132 KB Output is correct
13 Correct 102 ms 40324 KB Output is correct
14 Correct 85 ms 41416 KB Output is correct
15 Correct 27 ms 34716 KB Output is correct
16 Correct 28 ms 34908 KB Output is correct
17 Correct 28 ms 34900 KB Output is correct
18 Correct 28 ms 34908 KB Output is correct
19 Correct 28 ms 34900 KB Output is correct
20 Correct 28 ms 34904 KB Output is correct
21 Correct 29 ms 34772 KB Output is correct
22 Correct 29 ms 34820 KB Output is correct
23 Correct 28 ms 34908 KB Output is correct
24 Correct 28 ms 34916 KB Output is correct
25 Correct 27 ms 34908 KB Output is correct
26 Correct 34 ms 34724 KB Output is correct
27 Correct 29 ms 34964 KB Output is correct
28 Correct 28 ms 34908 KB Output is correct
29 Correct 28 ms 34908 KB Output is correct
30 Correct 28 ms 34900 KB Output is correct
31 Correct 28 ms 34908 KB Output is correct
32 Correct 29 ms 34936 KB Output is correct
33 Correct 30 ms 34964 KB Output is correct
34 Correct 35 ms 35604 KB Output is correct
35 Correct 90 ms 40136 KB Output is correct
36 Correct 87 ms 40136 KB Output is correct
37 Correct 106 ms 40068 KB Output is correct
38 Correct 84 ms 40156 KB Output is correct
39 Correct 91 ms 39876 KB Output is correct
40 Correct 85 ms 39620 KB Output is correct
41 Correct 89 ms 40388 KB Output is correct
42 Correct 85 ms 40188 KB Output is correct
43 Correct 115 ms 40132 KB Output is correct
44 Correct 110 ms 40392 KB Output is correct
45 Execution timed out 2037 ms 43916 KB Time limit exceeded
46 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 34768 KB Output is correct
2 Correct 31 ms 34640 KB Output is correct
3 Correct 29 ms 34652 KB Output is correct
4 Correct 29 ms 34648 KB Output is correct
5 Correct 29 ms 34896 KB Output is correct
6 Correct 29 ms 34908 KB Output is correct
7 Correct 29 ms 34900 KB Output is correct
8 Correct 28 ms 34896 KB Output is correct
9 Correct 74 ms 39256 KB Output is correct
10 Correct 91 ms 40144 KB Output is correct
11 Correct 84 ms 40132 KB Output is correct
12 Correct 102 ms 40324 KB Output is correct
13 Correct 85 ms 41416 KB Output is correct
14 Correct 80 ms 39628 KB Output is correct
15 Correct 133 ms 44368 KB Output is correct
16 Correct 127 ms 44152 KB Output is correct
17 Correct 142 ms 44492 KB Output is correct
18 Correct 126 ms 45612 KB Output is correct
19 Execution timed out 2005 ms 44628 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 34652 KB Output is correct
2 Correct 28 ms 34768 KB Output is correct
3 Correct 31 ms 34640 KB Output is correct
4 Correct 29 ms 34652 KB Output is correct
5 Correct 29 ms 34648 KB Output is correct
6 Correct 29 ms 34896 KB Output is correct
7 Correct 29 ms 34908 KB Output is correct
8 Correct 29 ms 34900 KB Output is correct
9 Correct 28 ms 34896 KB Output is correct
10 Correct 74 ms 39256 KB Output is correct
11 Correct 91 ms 40144 KB Output is correct
12 Correct 84 ms 40132 KB Output is correct
13 Correct 102 ms 40324 KB Output is correct
14 Correct 85 ms 41416 KB Output is correct
15 Correct 80 ms 39628 KB Output is correct
16 Correct 133 ms 44368 KB Output is correct
17 Correct 127 ms 44152 KB Output is correct
18 Correct 142 ms 44492 KB Output is correct
19 Correct 126 ms 45612 KB Output is correct
20 Execution timed out 2005 ms 44628 KB Time limit exceeded
21 Halted 0 ms 0 KB -