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Submission #1045228

# Submission time Handle Problem Language Result Execution time Memory
1045228 2024-08-05T19:14:25 Z Unforgettablepl Toll (BOI17_toll) C++17
100 / 100
 228 ms 72204 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

const int INF = 1e10;


int32_t main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	int k,n,m,q;
	cin >> k >> n >> m >> q;
	auto combine = [&](vector<vector<int>> DPa,vector<vector<int>> DPb){
		vector DPres(k,vector(k,INF));
		for(int l=0;l<k;l++){
			for(int r=0;r<k;r++){
				for(int x=0;x<k;x++){
					DPres[l][r]=min(DPres[l][r],DPa[l][x]+DPb[x][r]);
				}
			}
		}
		return DPres;
	};
	int totBlocks = n/k;
	vector lift(totBlocks+1,vector(16,vector(k,vector(k,INF))));
	for(int i=1;i<=m;i++){
		int a,b,t;cin>>a>>b>>t;
		int block = a/k;
		a%=k;b%=k;
		lift[block][0][a][b]=t;
	}
	for(int bit=1;bit<16;bit++){
		for(int i=0;i<=totBlocks;i++){
			if(i+(1<<bit)>totBlocks)continue;
			lift[i][bit]=combine(lift[i][bit-1],lift[i+(1<<(bit-1))][bit-1]);
		}
	}
	for(int i=1;i<=q;i++){
		int a,b;cin>>a>>b;
		int blockA = a/k;a%=k;
		int blockB = b/k;b%=k;
		if(blockA==blockB){cout<<"-1\n";continue;}
		int tar = blockB-blockA;
		vector res(k,vector(k,INF));
		for(int j=0;j<k;j++)res[j][j]=0;
		for(int bit=0;bit<16;bit++)if(tar&(1<<bit)){
			res=combine(res,lift[blockA][bit]);
			blockA+=(1<<bit);
		}
		if(res[a][b]>=INF)cout<<"-1\n";
		else cout<<res[a][b]<<'\n';
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 190 ms 71392 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 3 ms 1628 KB Output is correct
6 Correct 3 ms 1876 KB Output is correct
7 Correct 3 ms 1884 KB Output is correct
8 Correct 214 ms 71424 KB Output is correct
9 Correct 207 ms 71392 KB Output is correct
10 Correct 198 ms 71252 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 145 ms 61264 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 8 ms 1884 KB Output is correct
8 Correct 12 ms 1628 KB Output is correct
9 Correct 228 ms 72144 KB Output is correct
10 Correct 153 ms 55376 KB Output is correct
11 Correct 148 ms 62412 KB Output is correct
12 Correct 132 ms 54356 KB Output is correct
13 Correct 90 ms 39760 KB Output is correct
14 Correct 71 ms 33616 KB Output is correct
15 Correct 87 ms 38736 KB Output is correct
16 Correct 73 ms 38724 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 1884 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 4 ms 1628 KB Output is correct
9 Correct 2 ms 1812 KB Output is correct
10 Correct 184 ms 72036 KB Output is correct
11 Correct 139 ms 62292 KB Output is correct
12 Correct 121 ms 55120 KB Output is correct
13 Correct 122 ms 55380 KB Output is correct
14 Correct 120 ms 54840 KB Output is correct
15 Correct 65 ms 38664 KB Output is correct
16 Correct 71 ms 38480 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 1884 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 4 ms 1628 KB Output is correct
9 Correct 2 ms 1812 KB Output is correct
10 Correct 184 ms 72036 KB Output is correct
11 Correct 139 ms 62292 KB Output is correct
12 Correct 121 ms 55120 KB Output is correct
13 Correct 122 ms 55380 KB Output is correct
14 Correct 120 ms 54840 KB Output is correct
15 Correct 65 ms 38664 KB Output is correct
16 Correct 71 ms 38480 KB Output is correct
17 Correct 143 ms 62348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 460 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 4 ms 1884 KB Output is correct
24 Correct 4 ms 1628 KB Output is correct
25 Correct 6 ms 1628 KB Output is correct
26 Correct 6 ms 1628 KB Output is correct
27 Correct 176 ms 71916 KB Output is correct
28 Correct 127 ms 55204 KB Output is correct
29 Correct 130 ms 55564 KB Output is correct
30 Correct 122 ms 54868 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 190 ms 71392 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 3 ms 1628 KB Output is correct
6 Correct 3 ms 1876 KB Output is correct
7 Correct 3 ms 1884 KB Output is correct
8 Correct 214 ms 71424 KB Output is correct
9 Correct 207 ms 71392 KB Output is correct
10 Correct 198 ms 71252 KB Output is correct
11 Correct 145 ms 61264 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 8 ms 1884 KB Output is correct
18 Correct 12 ms 1628 KB Output is correct
19 Correct 228 ms 72144 KB Output is correct
20 Correct 153 ms 55376 KB Output is correct
21 Correct 148 ms 62412 KB Output is correct
22 Correct 132 ms 54356 KB Output is correct
23 Correct 90 ms 39760 KB Output is correct
24 Correct 71 ms 33616 KB Output is correct
25 Correct 87 ms 38736 KB Output is correct
26 Correct 73 ms 38724 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 2 ms 1884 KB Output is correct
33 Correct 2 ms 1628 KB Output is correct
34 Correct 4 ms 1628 KB Output is correct
35 Correct 2 ms 1812 KB Output is correct
36 Correct 184 ms 72036 KB Output is correct
37 Correct 139 ms 62292 KB Output is correct
38 Correct 121 ms 55120 KB Output is correct
39 Correct 122 ms 55380 KB Output is correct
40 Correct 120 ms 54840 KB Output is correct
41 Correct 65 ms 38664 KB Output is correct
42 Correct 71 ms 38480 KB Output is correct
43 Correct 143 ms 62348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 460 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 4 ms 1884 KB Output is correct
50 Correct 4 ms 1628 KB Output is correct
51 Correct 6 ms 1628 KB Output is correct
52 Correct 6 ms 1628 KB Output is correct
53 Correct 176 ms 71916 KB Output is correct
54 Correct 127 ms 55204 KB Output is correct
55 Correct 130 ms 55564 KB Output is correct
56 Correct 122 ms 54868 KB Output is correct
57 Correct 174 ms 68048 KB Output is correct
58 Correct 191 ms 72204 KB Output is correct
59 Correct 163 ms 62464 KB Output is correct