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Submission #1045230

# Submission time Handle Problem Language Result Execution time Memory
1045230 2024-08-05T19:15:11 Z Unforgettablepl Toll (BOI17_toll) C++17
100 / 100
 260 ms 71288 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;
		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 260 ms 71200 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 3 ms 1628 KB Output is correct
6 Correct 2 ms 1628 KB Output is correct
7 Correct 3 ms 1884 KB Output is correct
8 Correct 188 ms 71248 KB Output is correct
9 Correct 189 ms 71148 KB Output is correct
10 Correct 223 ms 71248 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 60752 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 0 ms 348 KB Output is correct
7 Correct 8 ms 1884 KB Output is correct
8 Correct 10 ms 1744 KB Output is correct
9 Correct 189 ms 71288 KB Output is correct
10 Correct 156 ms 53308 KB Output is correct
11 Correct 150 ms 60844 KB Output is correct
12 Correct 127 ms 53072 KB Output is correct
13 Correct 89 ms 37468 KB Output is correct
14 Correct 71 ms 32148 KB Output is correct
15 Correct 73 ms 37464 KB Output is correct
16 Correct 87 ms 37516 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 3 ms 1872 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1628 KB Output is correct
10 Correct 186 ms 71240 KB Output is correct
11 Correct 135 ms 60752 KB Output is correct
12 Correct 124 ms 53048 KB Output is correct
13 Correct 127 ms 53072 KB Output is correct
14 Correct 127 ms 53204 KB Output is correct
15 Correct 76 ms 37464 KB Output is correct
16 Correct 64 ms 37468 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 3 ms 1872 KB Output is correct
7 Correct 2 ms 1628 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1628 KB Output is correct
10 Correct 186 ms 71240 KB Output is correct
11 Correct 135 ms 60752 KB Output is correct
12 Correct 124 ms 53048 KB Output is correct
13 Correct 127 ms 53072 KB Output is correct
14 Correct 127 ms 53204 KB Output is correct
15 Correct 76 ms 37464 KB Output is correct
16 Correct 64 ms 37468 KB Output is correct
17 Correct 146 ms 60752 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 5 ms 1884 KB Output is correct
24 Correct 5 ms 1676 KB Output is correct
25 Correct 7 ms 1712 KB Output is correct
26 Correct 5 ms 1628 KB Output is correct
27 Correct 199 ms 71284 KB Output is correct
28 Correct 139 ms 53084 KB Output is correct
29 Correct 137 ms 53192 KB Output is correct
30 Correct 134 ms 53080 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 260 ms 71200 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 3 ms 1628 KB Output is correct
6 Correct 2 ms 1628 KB Output is correct
7 Correct 3 ms 1884 KB Output is correct
8 Correct 188 ms 71248 KB Output is correct
9 Correct 189 ms 71148 KB Output is correct
10 Correct 223 ms 71248 KB Output is correct
11 Correct 146 ms 60752 KB Output is correct
12 Correct 0 ms 348 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 10 ms 1744 KB Output is correct
19 Correct 189 ms 71288 KB Output is correct
20 Correct 156 ms 53308 KB Output is correct
21 Correct 150 ms 60844 KB Output is correct
22 Correct 127 ms 53072 KB Output is correct
23 Correct 89 ms 37468 KB Output is correct
24 Correct 71 ms 32148 KB Output is correct
25 Correct 73 ms 37464 KB Output is correct
26 Correct 87 ms 37516 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 3 ms 1872 KB Output is correct
33 Correct 2 ms 1628 KB Output is correct
34 Correct 2 ms 1628 KB Output is correct
35 Correct 2 ms 1628 KB Output is correct
36 Correct 186 ms 71240 KB Output is correct
37 Correct 135 ms 60752 KB Output is correct
38 Correct 124 ms 53048 KB Output is correct
39 Correct 127 ms 53072 KB Output is correct
40 Correct 127 ms 53204 KB Output is correct
41 Correct 76 ms 37464 KB Output is correct
42 Correct 64 ms 37468 KB Output is correct
43 Correct 146 ms 60752 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 5 ms 1884 KB Output is correct
50 Correct 5 ms 1676 KB Output is correct
51 Correct 7 ms 1712 KB Output is correct
52 Correct 5 ms 1628 KB Output is correct
53 Correct 199 ms 71284 KB Output is correct
54 Correct 139 ms 53084 KB Output is correct
55 Correct 137 ms 53192 KB Output is correct
56 Correct 134 ms 53080 KB Output is correct
57 Correct 166 ms 65064 KB Output is correct
58 Correct 204 ms 71172 KB Output is correct
59 Correct 159 ms 61008 KB Output is correct