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Submission #223745

# Submission time Handle Problem Language Result Execution time Memory
223745 2020-04-16T09:30:47 Z johutha Toll (BOI17_toll) C++17
100 / 100
 265 ms 23800 KB 
#include <iostream>
#include <vector>
#include <algorithm>

#define int int64_t

using namespace std;

int k;
struct block
{
	vector<vector<int>> bl;

	block() : bl(vector<vector<int>>(k, vector<int>(k, 1e11))) {}

	static block nt()
	{
		block b;
		for (int i = 0; i < k; i++) b.bl[i][i] = 0;
		return b;
	}

	static block merge(const block& b1, const block& b2)
	{
		block res;
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{
				for (int l = 0; l < k; l++)
				{
					res.bl[i][j] = min(res.bl[i][j], b1.bl[i][l] + b2.bl[l][j]);
				}
			}
		}
		return res;
	}

	void print()
	{
		return;
		for (int i = 0; i < k; i++)
		{
			for (int j = 0; j < k; j++)
			{
				cout << bl[i][j] << " ";
			}
			cout << "\n";
		}
		cout << "\n";
	}
};

struct segtree
{
	vector<block> table;

	block query(int ql, int qr, int l, int r, int pos)
	{
		if (ql <= l && r <= qr) return table[pos];
		if (qr < l || r < ql) return block::nt();
		return block::merge(query(ql, qr, l, (l + r)/2, 2*pos + 1), query(ql, qr, (l + r)/2 + 1, r, 2*pos + 2));
	}

	void build(const vector<block>& vals, int l, int r, int pos)
	{
		if (l == r)
		{
			table[pos] = vals[l];
			return;
		}
		build(vals, l, (l + r)/2, 2*pos + 1);
		build(vals, (l + r)/2 + 1, r, 2*pos + 2);
		table[pos] = block::merge(table[2*pos + 1], table[2*pos + 2]);
	}
};

signed main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int n, m, o;
	cin >> k >> n >> m >> o;
	n += k - (k % n);
	int nbl = (n / k);
	vector<block> bls(nbl);

	for (int i = 0; i < m; i++)
	{
		int a, b, w;
		cin >> a >> b >> w;
		int cb = a / k;
		a %= k;
		b %= k;
		bls[cb].bl[a][b] = min(bls[cb].bl[a][b], w);
	}

	segtree st;
	st.table.resize(4*nbl);
	st.build(bls, 0, nbl - 1, 0);

	for (auto bl : bls)
	{
		bl.print();
	}
	
	for (int i = 0; i < o; i++)
	{
		int fr, to;
		cin >> fr >> to;
		if ((fr / k) == (to / k))
		{
			cout << "-1\n";
			continue;
		}
		auto bl = st.query((fr / k), (to / k) - 1, 0, nbl - 1, 0);
		bl.print();
		int v = bl.bl[fr % k][to % k];
		cout << (v >= 1e11 ? -1 : v) << "\n";
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 144 ms 22904 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 10 ms 768 KB Output is correct
6 Correct 9 ms 768 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 147 ms 22776 KB Output is correct
9 Correct 143 ms 22776 KB Output is correct
10 Correct 123 ms 22008 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 20624 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 29 ms 896 KB Output is correct
8 Correct 35 ms 896 KB Output is correct
9 Correct 109 ms 22776 KB Output is correct
10 Correct 146 ms 18936 KB Output is correct
11 Correct 129 ms 20728 KB Output is correct
12 Correct 124 ms 18040 KB Output is correct
13 Correct 109 ms 14328 KB Output is correct
14 Correct 72 ms 11640 KB Output is correct
15 Correct 84 ms 13064 KB Output is correct
16 Correct 81 ms 13176 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 6 ms 768 KB Output is correct
7 Correct 6 ms 768 KB Output is correct
8 Correct 7 ms 768 KB Output is correct
9 Correct 7 ms 768 KB Output is correct
10 Correct 68 ms 22648 KB Output is correct
11 Correct 78 ms 20472 KB Output is correct
12 Correct 84 ms 18808 KB Output is correct
13 Correct 89 ms 19064 KB Output is correct
14 Correct 82 ms 18424 KB Output is correct
15 Correct 50 ms 13048 KB Output is correct
16 Correct 51 ms 13048 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 6 ms 768 KB Output is correct
7 Correct 6 ms 768 KB Output is correct
8 Correct 7 ms 768 KB Output is correct
9 Correct 7 ms 768 KB Output is correct
10 Correct 68 ms 22648 KB Output is correct
11 Correct 78 ms 20472 KB Output is correct
12 Correct 84 ms 18808 KB Output is correct
13 Correct 89 ms 19064 KB Output is correct
14 Correct 82 ms 18424 KB Output is correct
15 Correct 50 ms 13048 KB Output is correct
16 Correct 51 ms 13048 KB Output is correct
17 Correct 97 ms 20600 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 4 ms 384 KB Output is correct
23 Correct 20 ms 1024 KB Output is correct
24 Correct 21 ms 768 KB Output is correct
25 Correct 34 ms 768 KB Output is correct
26 Correct 30 ms 888 KB Output is correct
27 Correct 92 ms 22776 KB Output is correct
28 Correct 116 ms 18936 KB Output is correct
29 Correct 135 ms 19336 KB Output is correct
30 Correct 112 ms 18552 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 144 ms 22904 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 10 ms 768 KB Output is correct
6 Correct 9 ms 768 KB Output is correct
7 Correct 10 ms 768 KB Output is correct
8 Correct 147 ms 22776 KB Output is correct
9 Correct 143 ms 22776 KB Output is correct
10 Correct 123 ms 22008 KB Output is correct
11 Correct 135 ms 20624 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 29 ms 896 KB Output is correct
18 Correct 35 ms 896 KB Output is correct
19 Correct 109 ms 22776 KB Output is correct
20 Correct 146 ms 18936 KB Output is correct
21 Correct 129 ms 20728 KB Output is correct
22 Correct 124 ms 18040 KB Output is correct
23 Correct 109 ms 14328 KB Output is correct
24 Correct 72 ms 11640 KB Output is correct
25 Correct 84 ms 13064 KB Output is correct
26 Correct 81 ms 13176 KB Output is correct
27 Correct 4 ms 384 KB Output is correct
28 Correct 4 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 4 ms 384 KB Output is correct
32 Correct 6 ms 768 KB Output is correct
33 Correct 6 ms 768 KB Output is correct
34 Correct 7 ms 768 KB Output is correct
35 Correct 7 ms 768 KB Output is correct
36 Correct 68 ms 22648 KB Output is correct
37 Correct 78 ms 20472 KB Output is correct
38 Correct 84 ms 18808 KB Output is correct
39 Correct 89 ms 19064 KB Output is correct
40 Correct 82 ms 18424 KB Output is correct
41 Correct 50 ms 13048 KB Output is correct
42 Correct 51 ms 13048 KB Output is correct
43 Correct 97 ms 20600 KB Output is correct
44 Correct 5 ms 384 KB Output is correct
45 Correct 4 ms 384 KB Output is correct
46 Correct 4 ms 384 KB Output is correct
47 Correct 5 ms 384 KB Output is correct
48 Correct 4 ms 384 KB Output is correct
49 Correct 20 ms 1024 KB Output is correct
50 Correct 21 ms 768 KB Output is correct
51 Correct 34 ms 768 KB Output is correct
52 Correct 30 ms 888 KB Output is correct
53 Correct 92 ms 22776 KB Output is correct
54 Correct 116 ms 18936 KB Output is correct
55 Correct 135 ms 19336 KB Output is correct
56 Correct 112 ms 18552 KB Output is correct
57 Correct 265 ms 23800 KB Output is correct
58 Correct 146 ms 22776 KB Output is correct
59 Correct 166 ms 20780 KB Output is correct