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답안 #1115842

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1115842 2024-11-21T02:36:45 Z vjudge1 Toll (BOI17_toll) C++17
100 / 100
 166 ms 72520 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define fi first
#define se second
#define all(v) v.begin(), v.end()
#define faster ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define read_input(file) if (fopen(file".inp", "r")) freopen(file".inp", "r", stdin);
#define file(file) freopen (file".inp", "r", stdin); freopen (file".out", "w", stdout);

const int N = 5e4, inf = 1e12;
int n, m, o, k;

struct matrix{
	vector <vector<int>> d;
	void init(int n, int m, int v){
		d.resize(n, vector<int>(m, v));
	}
};

matrix operator* (const matrix &a, const matrix &b){
	matrix c;
	c.init(a.d.size(), b.d[0].size(), inf);
	for (int i = 0; i < (int)a.d.size(); ++i)
		for (int j = 0; j < (int)b.d[0].size(); ++j)
			for (int k = 0; k < (int)a.d[0].size(); ++k)
				c.d[i][j] = min(c.d[i][j], a.d[i][k] + b.d[k][j]);
	return c;
}

matrix M[N + 5];
matrix binlift[N + 5][17];

void solve(){
	cin >> k >> n >> m >> o;
	int sum = n / k;
	for (int i = 0; i <= sum; ++i)
		M[i].init(k, k, inf);
	for (int i = 1; i <= m; ++i){
		int u, v, w;
		cin >> u >> v >> w;
		M[u / k].d[u % k][v % k] = w;
	}
	for (int i = 0; i <= sum; ++i) binlift[i][0] = M[i];
	for (int i = 1; i <= 16; ++i)
		for (int j = 0; j <= sum - (1 << i); ++j)
			binlift[j][i] = binlift[j][i - 1] * binlift[j + (1 << (i - 1))][i - 1];
	while (o--){
		int u, v;
		cin >> u >> v;
		if (u > v){
			cout << "-1\n";
			continue;
		}
		matrix nw;
		nw.init(k, k, inf);
		nw.d[0][u % k] = 0;
		int s = u / k, t = v / k;
		for (int i = 16; i >= 0; --i)
			if (s + (1 << i) <= t){
				nw = nw * binlift[s][i];
				s += (1 << i);
			}
		cout << (nw.d[0][v % k] >= inf ? -1 : nw.d[0][v % k]) << "\n";
	}
}

signed main(){
    faster;
    // file("file");
    // read_input("file");
    int tt = 1;
    // cin >> tt;
    while (tt--){
        solve();
    }
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 115 ms 70732 KB Output is correct
2 Correct 5 ms 21752 KB Output is correct
3 Correct 5 ms 21584 KB Output is correct
4 Correct 5 ms 21584 KB Output is correct
5 Correct 7 ms 22208 KB Output is correct
6 Correct 7 ms 22264 KB Output is correct
7 Correct 7 ms 22096 KB Output is correct
8 Correct 119 ms 70660 KB Output is correct
9 Correct 121 ms 70560 KB Output is correct
10 Correct 109 ms 70728 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 110 ms 67472 KB Output is correct
2 Correct 8 ms 21752 KB Output is correct
3 Correct 6 ms 21584 KB Output is correct
4 Correct 5 ms 21584 KB Output is correct
5 Correct 6 ms 21584 KB Output is correct
6 Correct 6 ms 21584 KB Output is correct
7 Correct 13 ms 22096 KB Output is correct
8 Correct 13 ms 22096 KB Output is correct
9 Correct 123 ms 70612 KB Output is correct
10 Correct 141 ms 61836 KB Output is correct
11 Correct 113 ms 67656 KB Output is correct
12 Correct 128 ms 61768 KB Output is correct
13 Correct 94 ms 48724 KB Output is correct
14 Correct 75 ms 44608 KB Output is correct
15 Correct 78 ms 48676 KB Output is correct
16 Correct 82 ms 48844 KB Output is correct

Subtask #3
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 21584 KB Output is correct
2 Correct 6 ms 21584 KB Output is correct
3 Correct 6 ms 21584 KB Output is correct
4 Correct 5 ms 21584 KB Output is correct
5 Correct 6 ms 21584 KB Output is correct
6 Correct 7 ms 22116 KB Output is correct
7 Correct 7 ms 22096 KB Output is correct
8 Correct 7 ms 22096 KB Output is correct
9 Correct 8 ms 22096 KB Output is correct
10 Correct 113 ms 70548 KB Output is correct
11 Correct 99 ms 67404 KB Output is correct
12 Correct 117 ms 61772 KB Output is correct
13 Correct 119 ms 61668 KB Output is correct
14 Correct 111 ms 61824 KB Output is correct
15 Correct 72 ms 48716 KB Output is correct
16 Correct 74 ms 48712 KB Output is correct

Subtask #4
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 21584 KB Output is correct
2 Correct 6 ms 21584 KB Output is correct
3 Correct 6 ms 21584 KB Output is correct
4 Correct 5 ms 21584 KB Output is correct
5 Correct 6 ms 21584 KB Output is correct
6 Correct 7 ms 22116 KB Output is correct
7 Correct 7 ms 22096 KB Output is correct
8 Correct 7 ms 22096 KB Output is correct
9 Correct 8 ms 22096 KB Output is correct
10 Correct 113 ms 70548 KB Output is correct
11 Correct 99 ms 67404 KB Output is correct
12 Correct 117 ms 61772 KB Output is correct
13 Correct 119 ms 61668 KB Output is correct
14 Correct 111 ms 61824 KB Output is correct
15 Correct 72 ms 48716 KB Output is correct
16 Correct 74 ms 48712 KB Output is correct
17 Correct 107 ms 67404 KB Output is correct
18 Correct 6 ms 21584 KB Output is correct
19 Correct 6 ms 21584 KB Output is correct
20 Correct 6 ms 21584 KB Output is correct
21 Correct 6 ms 21584 KB Output is correct
22 Correct 6 ms 21584 KB Output is correct
23 Correct 9 ms 22096 KB Output is correct
24 Correct 9 ms 22096 KB Output is correct
25 Correct 11 ms 22096 KB Output is correct
26 Correct 10 ms 22096 KB Output is correct
27 Correct 113 ms 70692 KB Output is correct
28 Correct 123 ms 61768 KB Output is correct
29 Correct 133 ms 61768 KB Output is correct
30 Correct 147 ms 61768 KB Output is correct

Subtask #5
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 115 ms 70732 KB Output is correct
2 Correct 5 ms 21752 KB Output is correct
3 Correct 5 ms 21584 KB Output is correct
4 Correct 5 ms 21584 KB Output is correct
5 Correct 7 ms 22208 KB Output is correct
6 Correct 7 ms 22264 KB Output is correct
7 Correct 7 ms 22096 KB Output is correct
8 Correct 119 ms 70660 KB Output is correct
9 Correct 121 ms 70560 KB Output is correct
10 Correct 109 ms 70728 KB Output is correct
11 Correct 110 ms 67472 KB Output is correct
12 Correct 8 ms 21752 KB Output is correct
13 Correct 6 ms 21584 KB Output is correct
14 Correct 5 ms 21584 KB Output is correct
15 Correct 6 ms 21584 KB Output is correct
16 Correct 6 ms 21584 KB Output is correct
17 Correct 13 ms 22096 KB Output is correct
18 Correct 13 ms 22096 KB Output is correct
19 Correct 123 ms 70612 KB Output is correct
20 Correct 141 ms 61836 KB Output is correct
21 Correct 113 ms 67656 KB Output is correct
22 Correct 128 ms 61768 KB Output is correct
23 Correct 94 ms 48724 KB Output is correct
24 Correct 75 ms 44608 KB Output is correct
25 Correct 78 ms 48676 KB Output is correct
26 Correct 82 ms 48844 KB Output is correct
27 Correct 5 ms 21584 KB Output is correct
28 Correct 6 ms 21584 KB Output is correct
29 Correct 6 ms 21584 KB Output is correct
30 Correct 5 ms 21584 KB Output is correct
31 Correct 6 ms 21584 KB Output is correct
32 Correct 7 ms 22116 KB Output is correct
33 Correct 7 ms 22096 KB Output is correct
34 Correct 7 ms 22096 KB Output is correct
35 Correct 8 ms 22096 KB Output is correct
36 Correct 113 ms 70548 KB Output is correct
37 Correct 99 ms 67404 KB Output is correct
38 Correct 117 ms 61772 KB Output is correct
39 Correct 119 ms 61668 KB Output is correct
40 Correct 111 ms 61824 KB Output is correct
41 Correct 72 ms 48716 KB Output is correct
42 Correct 74 ms 48712 KB Output is correct
43 Correct 107 ms 67404 KB Output is correct
44 Correct 6 ms 21584 KB Output is correct
45 Correct 6 ms 21584 KB Output is correct
46 Correct 6 ms 21584 KB Output is correct
47 Correct 6 ms 21584 KB Output is correct
48 Correct 6 ms 21584 KB Output is correct
49 Correct 9 ms 22096 KB Output is correct
50 Correct 9 ms 22096 KB Output is correct
51 Correct 11 ms 22096 KB Output is correct
52 Correct 10 ms 22096 KB Output is correct
53 Correct 113 ms 70692 KB Output is correct
54 Correct 123 ms 61768 KB Output is correct
55 Correct 133 ms 61768 KB Output is correct
56 Correct 147 ms 61768 KB Output is correct
57 Correct 166 ms 72520 KB Output is correct
58 Correct 139 ms 70600 KB Output is correct
59 Correct 120 ms 67508 KB Output is correct