oj.uz

Submission #702741

# Submission time Handle Problem Language Result Execution time Memory
702741 2023-02-25T02:47:41 Z Zian_Jacobson Toll (BOI17_toll) C++17
100 / 100
 316 ms 51752 KB 
#include<bits/stdc++.h>
using namespace std;
#define cIO ios_base::sync_with_stdio(0);cin.tie(0)
#define fileIO(x) ifstream fin(string(x)+".in"); ofstream fout(string(x)+".out")
#define cont(container, object) (container.find(object)!=container.end())
#define sz(x) (int) (x).size()
#define ll long long
#define v vector
const int max_log = 17;
const int INF = INT_MAX / 3;
v<v<v<int>>> jmp;
int K, N, M, O;
//if WA use ll
int main()
{
	//everything 0-indexed
	fileIO("toll");
	
	cin >> K >> N >> M >> O;
	jmp= v<v<v<int>>>(N+6, v<v<int>>(max_log, v<int>(K, INF)));//[node][2^depth]=vector of costs
	for (int i = 0; i <= M - 1; i++)
	{
		int a, b, t; cin >> a >> b >> t;
		jmp[a][0][b%K] = t;
	}
	//debug
	/*for (int i = 0; i <= N - 1; i++)
	{
		cout << i << ": ";
		for (int j = 0; j <= K - 1; j++)
		{
			if (jmp[i][0][j] == INF) cout << "NUL ";
			else cout << jmp[i][0][j] << " ";
		}
		cout << "\n";
	}*/
	for (int dep=1; dep<=max_log; dep++)
		for (int i = 0; i <= N - 1; i++)
		{
			int mid_start = (i / K + (1<<(dep-1))) * K, mid_end = mid_start + 4;
			int res_start= (i / K + (1 << (dep))) * K, res_end = res_start + 4;
			if (res_start >= N) continue;
			for (int x = 0; x <= K - 1; x++)//x is the index of the middle
			{
				for (int y = 0; y <= K - 1; y++)//y is the index of the result
				{
					jmp[i][dep][y] = min(jmp[i][dep][y],
						jmp[i][dep - 1][x] + jmp[mid_start + x][dep - 1][y]);
				}
				//jmp should not be above INF or something is wrong
			}
		}
	//answer queries
	for (int q = 0; q <= O - 1; q++)
	{
		int a, b; cin >> a >> b;
		int tot_jumps = (int)(b / K) - a / K;
		if (tot_jumps == 0)
		{
			cout << "-1\n";
			continue;
		}
		int b_pos = b % K;
		int cur_pos = (int)(a / K)*K;
		v<int> cur_arr(K, INF); cur_arr[a % K] = 0;
		for (int i = 0; i <= max_log; i++)
		{
			if (tot_jumps & (1 << i))//we should jump i
			{
				v<int> new_arr(K, INF);
				for (int x = 0; x <= K - 1; x++)
					for (int y = 0; y <= K - 1; y++)
						new_arr[y] = min(new_arr[y], jmp[cur_pos + x][i][y] + cur_arr[x]);
				cur_arr = new_arr;
				cur_pos += K*(1 << i);
			}
		}
		if (cur_arr[b_pos] == INF) cout << "-1\n";
		else cout << cur_arr[b_pos] << "\n";
	}
	return 0;
}

Compilation message

toll.cpp: In function 'int main()':
toll.cpp:40:48: warning: unused variable 'mid_end' [-Wunused-variable]
   40 |    int mid_start = (i / K + (1<<(dep-1))) * K, mid_end = mid_start + 4;
      |                                                ^~~~~~~
toll.cpp:41:47: warning: unused variable 'res_end' [-Wunused-variable]
   41 |    int res_start= (i / K + (1 << (dep))) * K, res_end = res_start + 4;
      |                                               ^~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 49456 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 4 ms 1212 KB Output is correct
6 Correct 5 ms 1236 KB Output is correct
7 Correct 4 ms 1216 KB Output is correct
8 Correct 152 ms 49364 KB Output is correct
9 Correct 156 ms 49396 KB Output is correct
10 Correct 110 ms 48488 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 185 ms 50056 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 21 ms 1364 KB Output is correct
8 Correct 23 ms 1392 KB Output is correct
9 Correct 135 ms 49280 KB Output is correct
10 Correct 238 ms 50736 KB Output is correct
11 Correct 192 ms 50324 KB Output is correct
12 Correct 182 ms 49648 KB Output is correct
13 Correct 190 ms 31520 KB Output is correct
14 Correct 162 ms 30540 KB Output is correct
15 Correct 129 ms 30320 KB Output is correct
16 Correct 121 ms 30352 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 2 ms 1236 KB Output is correct
7 Correct 3 ms 1236 KB Output is correct
8 Correct 5 ms 1212 KB Output is correct
9 Correct 4 ms 1236 KB Output is correct
10 Correct 122 ms 49208 KB Output is correct
11 Correct 162 ms 49984 KB Output is correct
12 Correct 212 ms 50608 KB Output is correct
13 Correct 228 ms 50984 KB Output is correct
14 Correct 207 ms 50280 KB Output is correct
15 Correct 115 ms 30368 KB Output is correct
16 Correct 133 ms 30364 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 2 ms 1236 KB Output is correct
7 Correct 3 ms 1236 KB Output is correct
8 Correct 5 ms 1212 KB Output is correct
9 Correct 4 ms 1236 KB Output is correct
10 Correct 122 ms 49208 KB Output is correct
11 Correct 162 ms 49984 KB Output is correct
12 Correct 212 ms 50608 KB Output is correct
13 Correct 228 ms 50984 KB Output is correct
14 Correct 207 ms 50280 KB Output is correct
15 Correct 115 ms 30368 KB Output is correct
16 Correct 133 ms 30364 KB Output is correct
17 Correct 179 ms 49968 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 304 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 7 ms 1236 KB Output is correct
24 Correct 9 ms 1320 KB Output is correct
25 Correct 11 ms 1364 KB Output is correct
26 Correct 10 ms 1236 KB Output is correct
27 Correct 124 ms 49196 KB Output is correct
28 Correct 223 ms 50664 KB Output is correct
29 Correct 262 ms 50892 KB Output is correct
30 Correct 207 ms 50308 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 49456 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 4 ms 1212 KB Output is correct
6 Correct 5 ms 1236 KB Output is correct
7 Correct 4 ms 1216 KB Output is correct
8 Correct 152 ms 49364 KB Output is correct
9 Correct 156 ms 49396 KB Output is correct
10 Correct 110 ms 48488 KB Output is correct
11 Correct 185 ms 50056 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 304 KB Output is correct
17 Correct 21 ms 1364 KB Output is correct
18 Correct 23 ms 1392 KB Output is correct
19 Correct 135 ms 49280 KB Output is correct
20 Correct 238 ms 50736 KB Output is correct
21 Correct 192 ms 50324 KB Output is correct
22 Correct 182 ms 49648 KB Output is correct
23 Correct 190 ms 31520 KB Output is correct
24 Correct 162 ms 30540 KB Output is correct
25 Correct 129 ms 30320 KB Output is correct
26 Correct 121 ms 30352 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 312 KB Output is correct
32 Correct 2 ms 1236 KB Output is correct
33 Correct 3 ms 1236 KB Output is correct
34 Correct 5 ms 1212 KB Output is correct
35 Correct 4 ms 1236 KB Output is correct
36 Correct 122 ms 49208 KB Output is correct
37 Correct 162 ms 49984 KB Output is correct
38 Correct 212 ms 50608 KB Output is correct
39 Correct 228 ms 50984 KB Output is correct
40 Correct 207 ms 50280 KB Output is correct
41 Correct 115 ms 30368 KB Output is correct
42 Correct 133 ms 30364 KB Output is correct
43 Correct 179 ms 49968 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 1 ms 308 KB Output is correct
46 Correct 1 ms 304 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 7 ms 1236 KB Output is correct
50 Correct 9 ms 1320 KB Output is correct
51 Correct 11 ms 1364 KB Output is correct
52 Correct 10 ms 1236 KB Output is correct
53 Correct 124 ms 49196 KB Output is correct
54 Correct 223 ms 50664 KB Output is correct
55 Correct 262 ms 50892 KB Output is correct
56 Correct 207 ms 50308 KB Output is correct
57 Correct 316 ms 51752 KB Output is correct
58 Correct 154 ms 49400 KB Output is correct
59 Correct 208 ms 50228 KB Output is correct