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Submission #145163

# Submission time Handle Problem Language Result Execution time Memory
145163 2019-08-18T23:21:54 Z tincamatei Toll (BOI17_toll) C++14
100 / 100
 134 ms 28144 KB 
#include <bits/stdc++.h>

using namespace std;

const int INF = 500000001;
const int MAX_N = 50000;

struct Matrix {
	int matr[5][5];

	Matrix() {
		for(int i = 0; i < 5; ++i)
			for(int j = 0; j < 5; ++j)
				matr[i][j] = INF;
	}
};

Matrix mergeMatrices(int k, Matrix a, Matrix b) {
	Matrix rez;
	for(int i = 0; i < k; ++i)
		for(int j = 0; j < k; ++j)
			for(int l = 0; l < k; ++l)
				rez.matr[i][j] = min(rez.matr[i][j], a.matr[i][l] + b.matr[l][j]);
	return rez;
}

Matrix aint[1+4*MAX_N];
Matrix tranz[MAX_N];

void init(int K, int nod = 1, int l = 0, int r = MAX_N - 1) {
	if(l < r) {
		int mid = (l + r) / 2;
		init(K, 2 * nod, l, mid);
		init(K, 2 * nod + 1, mid + 1, r);
		aint[nod] = mergeMatrices(K, aint[2 * nod], aint[2 * nod + 1]);
	} else {
		aint[nod] = tranz[l];
	}
}

Matrix query(int K, int i, int j, int l = 0, int r = MAX_N - 1, int nod = 1) {
	if(i <= l && r <= j) {
		return aint[nod];
	} else {
		int mid = (l + r) / 2;
		Matrix rez;
		if(i <= mid) {
			rez = query(K, i, j, l, mid, 2 * nod);
			if(j > mid)
				rez = mergeMatrices(K, rez, query(K, i, j, mid + 1, r, 2 * nod + 1));
		} else
			rez = query(K, i, j, mid + 1, r, 2 * nod + 1);
		return rez;
	}
}

int main() {
	int K, N, M, O;

	scanf("%d%d%d%d", &K, &N, &M, &O);
	for(int i = 0; i < M; ++i) {
		int a, b, t;
		scanf("%d%d%d", &a, &b, &t);
		tranz[a / K].matr[a % K][b % K] = min(tranz[a / K].matr[a % K][b % K], t);
	}

	init(K);

	for(int i = 0; i < O; ++i) {
		int a, b;
		scanf("%d%d", &a, &b);
		if(a / K >= b / K)
			printf("-1\n");
		else {
			Matrix rez = query(K, a / K, b / K - 1);
			if(rez.matr[a % K][b % K] >= INF)
				printf("-1\n");
			else
				printf("%d\n", rez.matr[a % K][b % K]);
		}
	}

	return 0;
}

Compilation message

toll.cpp: In function 'int main()':
toll.cpp:60:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d", &K, &N, &M, &O);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:63:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &a, &b, &t);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~
toll.cpp:71:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 25848 KB Output is correct
2 Correct 26 ms 24824 KB Output is correct
3 Correct 30 ms 24824 KB Output is correct
4 Correct 30 ms 24824 KB Output is correct
5 Correct 32 ms 24824 KB Output is correct
6 Correct 28 ms 24824 KB Output is correct
7 Correct 28 ms 24824 KB Output is correct
8 Correct 65 ms 25720 KB Output is correct
9 Correct 64 ms 25720 KB Output is correct
10 Correct 44 ms 24952 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 26488 KB Output is correct
2 Correct 27 ms 24708 KB Output is correct
3 Correct 27 ms 24824 KB Output is correct
4 Correct 28 ms 24956 KB Output is correct
5 Correct 30 ms 24824 KB Output is correct
6 Correct 33 ms 24828 KB Output is correct
7 Correct 33 ms 24952 KB Output is correct
8 Correct 34 ms 24952 KB Output is correct
9 Correct 60 ms 25720 KB Output is correct
10 Correct 110 ms 27128 KB Output is correct
11 Correct 84 ms 26488 KB Output is correct
12 Correct 71 ms 26360 KB Output is correct
13 Correct 99 ms 27232 KB Output is correct
14 Correct 66 ms 26232 KB Output is correct
15 Correct 68 ms 25976 KB Output is correct
16 Correct 68 ms 25976 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 24824 KB Output is correct
2 Correct 27 ms 24860 KB Output is correct
3 Correct 28 ms 24824 KB Output is correct
4 Correct 30 ms 24924 KB Output is correct
5 Correct 34 ms 24824 KB Output is correct
6 Correct 27 ms 24796 KB Output is correct
7 Correct 28 ms 24824 KB Output is correct
8 Correct 39 ms 24824 KB Output is correct
9 Correct 34 ms 24824 KB Output is correct
10 Correct 50 ms 25592 KB Output is correct
11 Correct 69 ms 26232 KB Output is correct
12 Correct 84 ms 27000 KB Output is correct
13 Correct 94 ms 27228 KB Output is correct
14 Correct 78 ms 26564 KB Output is correct
15 Correct 64 ms 25976 KB Output is correct
16 Correct 64 ms 25976 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 24824 KB Output is correct
2 Correct 27 ms 24860 KB Output is correct
3 Correct 28 ms 24824 KB Output is correct
4 Correct 30 ms 24924 KB Output is correct
5 Correct 34 ms 24824 KB Output is correct
6 Correct 27 ms 24796 KB Output is correct
7 Correct 28 ms 24824 KB Output is correct
8 Correct 39 ms 24824 KB Output is correct
9 Correct 34 ms 24824 KB Output is correct
10 Correct 50 ms 25592 KB Output is correct
11 Correct 69 ms 26232 KB Output is correct
12 Correct 84 ms 27000 KB Output is correct
13 Correct 94 ms 27228 KB Output is correct
14 Correct 78 ms 26564 KB Output is correct
15 Correct 64 ms 25976 KB Output is correct
16 Correct 64 ms 25976 KB Output is correct
17 Correct 88 ms 26360 KB Output is correct
18 Correct 31 ms 24828 KB Output is correct
19 Correct 31 ms 24764 KB Output is correct
20 Correct 30 ms 24824 KB Output is correct
21 Correct 33 ms 24952 KB Output is correct
22 Correct 33 ms 24784 KB Output is correct
23 Correct 44 ms 24824 KB Output is correct
24 Correct 35 ms 24824 KB Output is correct
25 Correct 39 ms 24824 KB Output is correct
26 Correct 35 ms 24824 KB Output is correct
27 Correct 63 ms 25656 KB Output is correct
28 Correct 103 ms 27000 KB Output is correct
29 Correct 96 ms 27256 KB Output is correct
30 Correct 80 ms 26616 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 25848 KB Output is correct
2 Correct 26 ms 24824 KB Output is correct
3 Correct 30 ms 24824 KB Output is correct
4 Correct 30 ms 24824 KB Output is correct
5 Correct 32 ms 24824 KB Output is correct
6 Correct 28 ms 24824 KB Output is correct
7 Correct 28 ms 24824 KB Output is correct
8 Correct 65 ms 25720 KB Output is correct
9 Correct 64 ms 25720 KB Output is correct
10 Correct 44 ms 24952 KB Output is correct
11 Correct 78 ms 26488 KB Output is correct
12 Correct 27 ms 24708 KB Output is correct
13 Correct 27 ms 24824 KB Output is correct
14 Correct 28 ms 24956 KB Output is correct
15 Correct 30 ms 24824 KB Output is correct
16 Correct 33 ms 24828 KB Output is correct
17 Correct 33 ms 24952 KB Output is correct
18 Correct 34 ms 24952 KB Output is correct
19 Correct 60 ms 25720 KB Output is correct
20 Correct 110 ms 27128 KB Output is correct
21 Correct 84 ms 26488 KB Output is correct
22 Correct 71 ms 26360 KB Output is correct
23 Correct 99 ms 27232 KB Output is correct
24 Correct 66 ms 26232 KB Output is correct
25 Correct 68 ms 25976 KB Output is correct
26 Correct 68 ms 25976 KB Output is correct
27 Correct 32 ms 24824 KB Output is correct
28 Correct 27 ms 24860 KB Output is correct
29 Correct 28 ms 24824 KB Output is correct
30 Correct 30 ms 24924 KB Output is correct
31 Correct 34 ms 24824 KB Output is correct
32 Correct 27 ms 24796 KB Output is correct
33 Correct 28 ms 24824 KB Output is correct
34 Correct 39 ms 24824 KB Output is correct
35 Correct 34 ms 24824 KB Output is correct
36 Correct 50 ms 25592 KB Output is correct
37 Correct 69 ms 26232 KB Output is correct
38 Correct 84 ms 27000 KB Output is correct
39 Correct 94 ms 27228 KB Output is correct
40 Correct 78 ms 26564 KB Output is correct
41 Correct 64 ms 25976 KB Output is correct
42 Correct 64 ms 25976 KB Output is correct
43 Correct 88 ms 26360 KB Output is correct
44 Correct 31 ms 24828 KB Output is correct
45 Correct 31 ms 24764 KB Output is correct
46 Correct 30 ms 24824 KB Output is correct
47 Correct 33 ms 24952 KB Output is correct
48 Correct 33 ms 24784 KB Output is correct
49 Correct 44 ms 24824 KB Output is correct
50 Correct 35 ms 24824 KB Output is correct
51 Correct 39 ms 24824 KB Output is correct
52 Correct 35 ms 24824 KB Output is correct
53 Correct 63 ms 25656 KB Output is correct
54 Correct 103 ms 27000 KB Output is correct
55 Correct 96 ms 27256 KB Output is correct
56 Correct 80 ms 26616 KB Output is correct
57 Correct 134 ms 28144 KB Output is correct
58 Correct 66 ms 25720 KB Output is correct
59 Correct 85 ms 26616 KB Output is correct