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Submission #937658

# Submission time Handle Problem Language Result Execution time Memory
937658 2024-03-04T10:16:16 Z IBory Swapping Cities (APIO20_swap) C++17
0 / 100
 2000 ms 13000 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;

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

void Clear() {
	iota(R, R + MAX, 0);
	memset(T, 0, sizeof(T));
	memset(D, 0, sizeof(D));
    memset(C, 0, sizeof(C));
}

void init(int _N, int _M, vector<int> U, vector<int> V, vector<int> W) {
	Clear(); E.clear();
	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());
}

int Find(int n) {
    T[R[n]] |= T[n];
    C[R[n]] |= C[n];
	if (n == R[n]) return n;
	int r = Find(R[n]);
	T[r] |= T[n];
    C[r] |= C[n];
	return R[n] = r;
}

void Union(int a, int b) {
	if (++D[a] == 3) T[a] = 1;
	if (++D[b] == 3) T[b] = 1;
	a = Find(a), b = Find(b);
	if (a == b) {
        C[a] = 1;
        return;
    }
	R[a] = b;
	T[b] |= T[a];
    C[b] |= C[a];
}

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;

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

		bool ok = (Find(x) == Find(y)) && (T[Find(x)] || C[0]);
		(ok ? r : l) = mid;
	}

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

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2312 KB Output is correct
6 Correct 2 ms 2396 KB Output is correct
7 Correct 2 ms 2228 KB Output is correct
8 Correct 2 ms 2396 KB Output is correct
9 Correct 25 ms 6864 KB Output is correct
10 Correct 35 ms 7624 KB Output is correct
11 Correct 30 ms 7376 KB Output is correct
12 Correct 36 ms 7632 KB Output is correct
13 Correct 31 ms 7624 KB Output is correct
14 Correct 29 ms 7116 KB Output is correct
15 Correct 75 ms 10400 KB Output is correct
16 Correct 75 ms 10180 KB Output is correct
17 Correct 74 ms 10184 KB Output is correct
18 Correct 72 ms 10184 KB Output is correct
19 Execution timed out 2029 ms 6200 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Execution timed out 2073 ms 13000 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2312 KB Output is correct
6 Correct 2 ms 2396 KB Output is correct
7 Correct 2 ms 2228 KB Output is correct
8 Correct 2 ms 2396 KB Output is correct
9 Incorrect 2 ms 2396 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2396 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 2 ms 2312 KB Output is correct
6 Correct 2 ms 2396 KB Output is correct
7 Correct 2 ms 2228 KB Output is correct
8 Correct 2 ms 2396 KB Output is correct
9 Correct 25 ms 6864 KB Output is correct
10 Correct 35 ms 7624 KB Output is correct
11 Correct 30 ms 7376 KB Output is correct
12 Correct 36 ms 7632 KB Output is correct
13 Correct 31 ms 7624 KB Output is correct
14 Correct 29 ms 7116 KB Output is correct
15 Correct 75 ms 10400 KB Output is correct
16 Correct 75 ms 10180 KB Output is correct
17 Correct 74 ms 10184 KB Output is correct
18 Correct 72 ms 10184 KB Output is correct
19 Execution timed out 2073 ms 13000 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2396 KB Output isn't correct
2 Halted 0 ms 0 KB -