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Submission #441852

# Submission time Handle Problem Language Result Execution time Memory
441852 2021-07-06T11:02:48 Z dutch Toll (BOI17_toll) C++17
100 / 100
 200 ms 28364 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
using T = array<array<int, 5>, 6>;

const int MAXN = 1e5, INF = 1e16;

vector<array<int, 2>> g[MAXN];
int n, k, m, o, s;
T ID, a[1<<17];

T comb(T x, T y){
	if(x[5][0] > y[5][0]) swap(x, y);
	int z = y[5][0];
	if(z == INF) return x;
	T res = ID;
	res[5][0] = x[5][0];
	for(int i=0; i<k; ++i)
		for(int u=0; u<k; ++u)
			for(auto &[v, w] : g[(z-1)*k+u])
				for(int j=0; j<k; ++j)
					res[i][j] = min(res[i][j], x[i][u] + w + y[v%k][j]);
	return res;
}

signed main(){
	cin.tie(0)->sync_with_stdio(0);
	cin >> k >> n >> m >> o;
	while(m--){
		int u, v, w; cin >> u >> v >> w;
		g[u].push_back({v, w});
	}

	for(int i=0; i<6; ++i) for(int j=0; j<5; ++j) ID[i][j] = (i!=j) * INF;
	s = (n + k - 1) / k;
	fill(a, a+2*s, ID);
	for(int i=0; i<s; ++i) a[i+s][5][0] = i;
	for(int i=0; i<5; ++i) ID[i][i] = INF;
	for(int i=s; --i; ) a[i] = comb(a[2*i], a[2*i+1]);

	while(o--){
		int i, j; cin >> i >> j;

		int l = i/k, r = j/k;
		T lx = ID, rx = ID;
		for(l+=s, r+=s+1; l<r; l/=2, r/=2){
			if(l & 1) lx = comb(lx, a[l++]);
			if(r & 1) rx = comb(rx, a[--r]);
		}
		i = comb(lx, rx)[i % k][j % k];

		cout << (i == INF ? -1 : i) << '\n';
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 28248 KB Output is correct
2 Correct 2 ms 2672 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 4 ms 3148 KB Output is correct
6 Correct 4 ms 3156 KB Output is correct
7 Correct 5 ms 3200 KB Output is correct
8 Correct 98 ms 28364 KB Output is correct
9 Correct 72 ms 28236 KB Output is correct
10 Correct 46 ms 26276 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 17440 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 14 ms 3264 KB Output is correct
8 Correct 16 ms 3072 KB Output is correct
9 Correct 65 ms 28364 KB Output is correct
10 Correct 129 ms 15044 KB Output is correct
11 Correct 87 ms 17732 KB Output is correct
12 Correct 90 ms 13176 KB Output is correct
13 Correct 118 ms 10836 KB Output is correct
14 Correct 57 ms 10592 KB Output is correct
15 Correct 79 ms 8124 KB Output is correct
16 Correct 66 ms 8080 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 3 ms 3148 KB Output is correct
7 Correct 4 ms 2892 KB Output is correct
8 Correct 5 ms 2892 KB Output is correct
9 Correct 3 ms 2812 KB Output is correct
10 Correct 44 ms 28280 KB Output is correct
11 Correct 53 ms 17552 KB Output is correct
12 Correct 88 ms 15004 KB Output is correct
13 Correct 85 ms 15432 KB Output is correct
14 Correct 63 ms 14204 KB Output is correct
15 Correct 40 ms 8124 KB Output is correct
16 Correct 49 ms 8048 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 3 ms 3148 KB Output is correct
7 Correct 4 ms 2892 KB Output is correct
8 Correct 5 ms 2892 KB Output is correct
9 Correct 3 ms 2812 KB Output is correct
10 Correct 44 ms 28280 KB Output is correct
11 Correct 53 ms 17552 KB Output is correct
12 Correct 88 ms 15004 KB Output is correct
13 Correct 85 ms 15432 KB Output is correct
14 Correct 63 ms 14204 KB Output is correct
15 Correct 40 ms 8124 KB Output is correct
16 Correct 49 ms 8048 KB Output is correct
17 Correct 78 ms 17564 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 3 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 6 ms 3148 KB Output is correct
24 Correct 8 ms 3020 KB Output is correct
25 Correct 21 ms 2968 KB Output is correct
26 Correct 14 ms 2952 KB Output is correct
27 Correct 60 ms 28288 KB Output is correct
28 Correct 121 ms 14980 KB Output is correct
29 Correct 113 ms 15532 KB Output is correct
30 Correct 77 ms 14304 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 28248 KB Output is correct
2 Correct 2 ms 2672 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 4 ms 3148 KB Output is correct
6 Correct 4 ms 3156 KB Output is correct
7 Correct 5 ms 3200 KB Output is correct
8 Correct 98 ms 28364 KB Output is correct
9 Correct 72 ms 28236 KB Output is correct
10 Correct 46 ms 26276 KB Output is correct
11 Correct 100 ms 17440 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 14 ms 3264 KB Output is correct
18 Correct 16 ms 3072 KB Output is correct
19 Correct 65 ms 28364 KB Output is correct
20 Correct 129 ms 15044 KB Output is correct
21 Correct 87 ms 17732 KB Output is correct
22 Correct 90 ms 13176 KB Output is correct
23 Correct 118 ms 10836 KB Output is correct
24 Correct 57 ms 10592 KB Output is correct
25 Correct 79 ms 8124 KB Output is correct
26 Correct 66 ms 8080 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 2 ms 2636 KB Output is correct
29 Correct 3 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 2 ms 2636 KB Output is correct
32 Correct 3 ms 3148 KB Output is correct
33 Correct 4 ms 2892 KB Output is correct
34 Correct 5 ms 2892 KB Output is correct
35 Correct 3 ms 2812 KB Output is correct
36 Correct 44 ms 28280 KB Output is correct
37 Correct 53 ms 17552 KB Output is correct
38 Correct 88 ms 15004 KB Output is correct
39 Correct 85 ms 15432 KB Output is correct
40 Correct 63 ms 14204 KB Output is correct
41 Correct 40 ms 8124 KB Output is correct
42 Correct 49 ms 8048 KB Output is correct
43 Correct 78 ms 17564 KB Output is correct
44 Correct 2 ms 2636 KB Output is correct
45 Correct 3 ms 2636 KB Output is correct
46 Correct 2 ms 2636 KB Output is correct
47 Correct 2 ms 2636 KB Output is correct
48 Correct 2 ms 2636 KB Output is correct
49 Correct 6 ms 3148 KB Output is correct
50 Correct 8 ms 3020 KB Output is correct
51 Correct 21 ms 2968 KB Output is correct
52 Correct 14 ms 2952 KB Output is correct
53 Correct 60 ms 28288 KB Output is correct
54 Correct 121 ms 14980 KB Output is correct
55 Correct 113 ms 15532 KB Output is correct
56 Correct 77 ms 14304 KB Output is correct
57 Correct 200 ms 13636 KB Output is correct
58 Correct 84 ms 28276 KB Output is correct
59 Correct 99 ms 17680 KB Output is correct