oj.uz

Submission #563160

# Submission time Handle Problem Language Result Execution time Memory
563160 2022-05-16T11:58:11 Z SeDunion Toll (BOI17_toll) C++17
100 / 100
 278 ms 189632 KB 
#include <iostream>
#include <array>
#include <cassert>
#include <algorithm>
#include <string>
#include <bitset> 
#include <vector>
#include <cmath>
#include <deque>
#include <queue>
#include <stack>
#include <map>
#include <set>
#ifndef LOCAL
	#include <bits/stdc++.h>
	#define cerr if(false)cerr
#endif
 
using namespace std;
using ll = long long;

const int N = 5e4 + 66;

const int K = 5;

int k;

using mat = array<array<ll, K>, K>;

mat g[N];

const ll inf = 1e18 + 126;

mat compute(mat a, mat b) {
	mat c; for (int i = 0 ; i < K ; ++ i) for (int j = 0 ; j < K ; ++ j) c[i][j] = inf;
	for (int i = 0 ; i < k ; ++ i) for (int j = 0 ; j < k ; ++ j) for (int l = 0 ; l < k ; ++ l) {
		c[i][j] = min(c[i][j], a[i][l] + b[l][j]);
	}
	return c;
}

const int LOG = 18;

mat sp[N][LOG];

mat compute(int l, int r) {
	mat cur; for (int i = 0 ; i < K ; ++ i) for (int j = 0 ; j < K ; ++ j) cur[i][j] = inf;
	bool st = false;
	int len = r - l + 1;
	cerr << l << " " << r << " sdf\n";
	for (int i = 0 ; i < LOG ; ++ i) {
		if (len >> i & 1) {
			cerr << "[" << l << " " << l + (1 << i) - 1 << "]\n";
			if (!st) cur = sp[l][i], st = true;
			else cur = compute(cur, sp[l][i]);
			l += 1 << i;
		}
	}
	return cur;
}

mat mid;

int qa[N], qb[N];

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n, m, q;
	cin >> k >> n >> m >> q;
	for (int b = 0 ; b < n ; ++ b) {
		for (int i = 0 ; i < k ; ++ i) {
			for (int j = 0 ; j < k ; ++ j) {
				g[b][i][j] = inf;
			}
		}
	}
	while (m--) {
		int a, b, c;
		cin >> a >> b >> c;
		int ba = a / k, bb = b / k;
		assert(ba + 1 == bb);
		int ia = a % k, ib = b % k;
		g[ba][ia][ib] = c;
	}
	for (int i = 0 ; i < n ; ++ i) {
		sp[i][0] = g[i];
	}
	for (int j = 1 ; j < LOG ; ++ j) {
		for (int i = 0 ; i + (1 << j) - 1 < n ; ++ i) {
			sp[i][j] = compute(sp[i][j - 1], sp[i + (1 << (j - 1))][j - 1]);
		}
	}
	for (int i = 0 ; i < q ; ++ i) {
		cin >> qa[i] >> qb[i];
		int ba = qa[i] / k, bb = qb[i] / k;
		int ia = qa[i] % k, ib = qb[i] % k;
		cerr << qa[i] << " " << qb[i] << "|" << ba << " " << bb << "|" << ia << " " << ib << endl;
		ll ans;
		if (ba == bb) {
			ans = inf;
		} else if (ba == bb - 1) {
			ans = g[ba][ia][ib];
		} else {
			ans = inf;
			int l = ba + 1, r = bb - 2;
			mid = compute(l, r);
			for (int s = 0 ; s < k ; ++ s) {
				for (int t = 0 ; t < k ; ++ t) {
					cerr << mid[s][t] << " ";
					ans = min(ans, (ba == bb - 2 && s == t ? 0 : mid[s][t]) + g[ba][ia][s] + g[bb - 1][t][ib]);
				}
				cerr << endl;
			}
		}
		if (ans >= inf) ans = -1;
		cout << ans << "\n";
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 205 ms 186336 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 5 ms 4052 KB Output is correct
6 Correct 5 ms 4052 KB Output is correct
7 Correct 3 ms 4052 KB Output is correct
8 Correct 233 ms 187240 KB Output is correct
9 Correct 225 ms 187088 KB Output is correct
10 Correct 217 ms 186456 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 214 ms 186292 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 8 ms 4180 KB Output is correct
8 Correct 10 ms 4180 KB Output is correct
9 Correct 216 ms 187108 KB Output is correct
10 Correct 236 ms 188636 KB Output is correct
11 Correct 222 ms 188024 KB Output is correct
12 Correct 224 ms 187496 KB Output is correct
13 Correct 189 ms 114240 KB Output is correct
14 Correct 140 ms 113276 KB Output is correct
15 Correct 171 ms 113064 KB Output is correct
16 Correct 188 ms 113068 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 3 ms 4052 KB Output is correct
7 Correct 3 ms 4052 KB Output is correct
8 Correct 5 ms 4080 KB Output is correct
9 Correct 5 ms 4040 KB Output is correct
10 Correct 200 ms 187024 KB Output is correct
11 Correct 201 ms 187840 KB Output is correct
12 Correct 226 ms 188380 KB Output is correct
13 Correct 231 ms 188596 KB Output is correct
14 Correct 229 ms 188024 KB Output is correct
15 Correct 165 ms 112952 KB Output is correct
16 Correct 163 ms 113100 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 3 ms 4052 KB Output is correct
7 Correct 3 ms 4052 KB Output is correct
8 Correct 5 ms 4080 KB Output is correct
9 Correct 5 ms 4040 KB Output is correct
10 Correct 200 ms 187024 KB Output is correct
11 Correct 201 ms 187840 KB Output is correct
12 Correct 226 ms 188380 KB Output is correct
13 Correct 231 ms 188596 KB Output is correct
14 Correct 229 ms 188024 KB Output is correct
15 Correct 165 ms 112952 KB Output is correct
16 Correct 163 ms 113100 KB Output is correct
17 Correct 218 ms 187800 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 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 4 ms 4048 KB Output is correct
24 Correct 4 ms 4052 KB Output is correct
25 Correct 6 ms 4180 KB Output is correct
26 Correct 6 ms 4164 KB Output is correct
27 Correct 203 ms 187000 KB Output is correct
28 Correct 259 ms 188416 KB Output is correct
29 Correct 228 ms 188652 KB Output is correct
30 Correct 233 ms 188004 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 205 ms 186336 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 5 ms 4052 KB Output is correct
6 Correct 5 ms 4052 KB Output is correct
7 Correct 3 ms 4052 KB Output is correct
8 Correct 233 ms 187240 KB Output is correct
9 Correct 225 ms 187088 KB Output is correct
10 Correct 217 ms 186456 KB Output is correct
11 Correct 214 ms 186292 KB Output is correct
12 Correct 1 ms 340 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 8 ms 4180 KB Output is correct
18 Correct 10 ms 4180 KB Output is correct
19 Correct 216 ms 187108 KB Output is correct
20 Correct 236 ms 188636 KB Output is correct
21 Correct 222 ms 188024 KB Output is correct
22 Correct 224 ms 187496 KB Output is correct
23 Correct 189 ms 114240 KB Output is correct
24 Correct 140 ms 113276 KB Output is correct
25 Correct 171 ms 113064 KB Output is correct
26 Correct 188 ms 113068 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 1 ms 324 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 3 ms 4052 KB Output is correct
33 Correct 3 ms 4052 KB Output is correct
34 Correct 5 ms 4080 KB Output is correct
35 Correct 5 ms 4040 KB Output is correct
36 Correct 200 ms 187024 KB Output is correct
37 Correct 201 ms 187840 KB Output is correct
38 Correct 226 ms 188380 KB Output is correct
39 Correct 231 ms 188596 KB Output is correct
40 Correct 229 ms 188024 KB Output is correct
41 Correct 165 ms 112952 KB Output is correct
42 Correct 163 ms 113100 KB Output is correct
43 Correct 218 ms 187800 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 324 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 4 ms 4048 KB Output is correct
50 Correct 4 ms 4052 KB Output is correct
51 Correct 6 ms 4180 KB Output is correct
52 Correct 6 ms 4164 KB Output is correct
53 Correct 203 ms 187000 KB Output is correct
54 Correct 259 ms 188416 KB Output is correct
55 Correct 228 ms 188652 KB Output is correct
56 Correct 233 ms 188004 KB Output is correct
57 Correct 278 ms 189632 KB Output is correct
58 Correct 211 ms 187160 KB Output is correct
59 Correct 220 ms 188064 KB Output is correct