답안 #393471

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
393471	2021-04-23T14:30:22 Z	Nordway	Toll (BOI17_toll)	C++17	100 / 100	158 ms	13248 KB

toll

#include<bits/stdc++.h>

#define x first
#define y second
#define pb push_back
#define mp make_pair
#define sz(v) v.size()
#define up_b upper_bound
#define low_b lower_bound
#define all(v) v.begin(),v.end()

using namespace std;

typedef long long ll;
typedef long double ld;

const int N=5e4+11;
const ll mod=1e9+7;
const int inf=1e9;

int k,n,m,o;

int lef[5][N],rig[5][N];
vector<pair<int,int>>g[N][2];
int ans[N];
int A[N],B[N];

void go(int l,int r,vector<int>orders){
	if(l==r){
		for(int i:orders){
			ans[i]=inf;
		}
		return ;
	}
	int mid=(l+r)/2;
	for(int x=0;x<k;x++){
		for(int i=l*k;i<(r+1)*k;i++){
			lef[x][i]=inf;
			rig[x][i]=inf;
		}
		lef[x][mid*k+x]=0;
		rig[x][mid*k+x]=0;
		for(int i=(mid+1)*k;i<(r+1)*k;i++){
			for(pair<int,int>p:g[i][1]){
				rig[x][i]=min(rig[x][i],rig[x][p.x]+p.y);
			}
		}
		for(int i=mid*k-1;i>=l*k;i--){
			for(pair<int,int>p:g[i][0]){
				lef[x][i]=min(lef[x][i],lef[x][p.x]+p.y);
			}
		}
	}
	vector<int>todo[2];
	for(int i:orders){
		int a=A[i],b=B[i];
		if(a/k<=mid&&mid<b/k){
			ans[i]=inf;
			for(int x=0;x<k;x++){
				ans[i]=min(ans[i],lef[x][a]+rig[x][b]);
			}
			continue;
		}
		todo[a/k>mid].pb(i);
	}
	go(l,mid,todo[0]);
	go(mid+1,r,todo[1]);
}

void solve() {
	cin>>k>>n>>m>>o;
	for(int i=1;i<=m;i++){
		int a,b,t;
		cin>>a>>b>>t;
		g[a][0].pb(mp(b,t));
		g[b][1].pb(mp(a,t));
	}
	vector<int>orders;
	for(int i=0;i<o;i++){
		cin>>A[i]>>B[i];
		orders.pb(i);
	}
	go(0,(n-1)/k,orders);
	for(int i=0;i<o;i++){
		if(ans[i]==inf)ans[i]=-1;
		cout<<ans[i]<<"\n";
	}

}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0),cout.tie(0);
	int T=1;
	//cin>>T;
	while(T--){
		solve();
		cout<<"\n";
	}
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	50 ms	7396 KB	Output is correct
2	Correct	3 ms	2636 KB	Output is correct
3	Correct	2 ms	2636 KB	Output is correct
4	Correct	2 ms	2636 KB	Output is correct
5	Correct	3 ms	2764 KB	Output is correct
6	Correct	3 ms	2776 KB	Output is correct
7	Correct	3 ms	2764 KB	Output is correct
8	Correct	36 ms	7320 KB	Output is correct
9	Correct	35 ms	7196 KB	Output is correct
10	Correct	9 ms	3460 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	71 ms	8448 KB	Output is correct
2	Correct	2 ms	2636 KB	Output is correct
3	Correct	2 ms	2636 KB	Output is correct
4	Correct	2 ms	2636 KB	Output is correct
5	Correct	2 ms	2636 KB	Output is correct
6	Correct	2 ms	2636 KB	Output is correct
7	Correct	6 ms	3148 KB	Output is correct
8	Correct	7 ms	3148 KB	Output is correct
9	Correct	39 ms	7268 KB	Output is correct
10	Correct	98 ms	11304 KB	Output is correct
11	Correct	73 ms	8636 KB	Output is correct
12	Correct	63 ms	8340 KB	Output is correct
13	Correct	158 ms	11668 KB	Output is correct
14	Correct	65 ms	8184 KB	Output is correct
15	Correct	56 ms	7816 KB	Output is correct
16	Correct	58 ms	7816 KB	Output is correct

Subtask #3
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2636 KB	Output is correct
2	Correct	2 ms	2588 KB	Output is correct
3	Correct	2 ms	2636 KB	Output is correct
4	Correct	2 ms	2636 KB	Output is correct
5	Correct	2 ms	2636 KB	Output is correct
6	Correct	2 ms	2764 KB	Output is correct
7	Correct	4 ms	2764 KB	Output is correct
8	Correct	5 ms	3020 KB	Output is correct
9	Correct	4 ms	2892 KB	Output is correct
10	Correct	35 ms	6940 KB	Output is correct
11	Correct	63 ms	8080 KB	Output is correct
12	Correct	104 ms	11032 KB	Output is correct
13	Correct	116 ms	11588 KB	Output is correct
14	Correct	85 ms	9796 KB	Output is correct
15	Correct	72 ms	7672 KB	Output is correct
16	Correct	57 ms	7672 KB	Output is correct

Subtask #4
31.0 / 31.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2636 KB	Output is correct
2	Correct	2 ms	2588 KB	Output is correct
3	Correct	2 ms	2636 KB	Output is correct
4	Correct	2 ms	2636 KB	Output is correct
5	Correct	2 ms	2636 KB	Output is correct
6	Correct	2 ms	2764 KB	Output is correct
7	Correct	4 ms	2764 KB	Output is correct
8	Correct	5 ms	3020 KB	Output is correct
9	Correct	4 ms	2892 KB	Output is correct
10	Correct	35 ms	6940 KB	Output is correct
11	Correct	63 ms	8080 KB	Output is correct
12	Correct	104 ms	11032 KB	Output is correct
13	Correct	116 ms	11588 KB	Output is correct
14	Correct	85 ms	9796 KB	Output is correct
15	Correct	72 ms	7672 KB	Output is correct
16	Correct	57 ms	7672 KB	Output is correct
17	Correct	73 ms	8196 KB	Output is correct
18	Correct	2 ms	2636 KB	Output is correct
19	Correct	2 ms	2636 KB	Output is correct
20	Correct	2 ms	2636 KB	Output is correct
21	Correct	2 ms	2636 KB	Output is correct
22	Correct	2 ms	2636 KB	Output is correct
23	Correct	4 ms	2820 KB	Output is correct
24	Correct	4 ms	2892 KB	Output is correct
25	Correct	5 ms	3020 KB	Output is correct
26	Correct	6 ms	2892 KB	Output is correct
27	Correct	41 ms	7044 KB	Output is correct
28	Correct	111 ms	11048 KB	Output is correct
29	Correct	114 ms	11784 KB	Output is correct
30	Correct	81 ms	9924 KB	Output is correct

Subtask #5
44.0 / 44.0

#	결과	실행 시간	메모리	Grader output
1	Correct	50 ms	7396 KB	Output is correct
2	Correct	3 ms	2636 KB	Output is correct
3	Correct	2 ms	2636 KB	Output is correct
4	Correct	2 ms	2636 KB	Output is correct
5	Correct	3 ms	2764 KB	Output is correct
6	Correct	3 ms	2776 KB	Output is correct
7	Correct	3 ms	2764 KB	Output is correct
8	Correct	36 ms	7320 KB	Output is correct
9	Correct	35 ms	7196 KB	Output is correct
10	Correct	9 ms	3460 KB	Output is correct
11	Correct	71 ms	8448 KB	Output is correct
12	Correct	2 ms	2636 KB	Output is correct
13	Correct	2 ms	2636 KB	Output is correct
14	Correct	2 ms	2636 KB	Output is correct
15	Correct	2 ms	2636 KB	Output is correct
16	Correct	2 ms	2636 KB	Output is correct
17	Correct	6 ms	3148 KB	Output is correct
18	Correct	7 ms	3148 KB	Output is correct
19	Correct	39 ms	7268 KB	Output is correct
20	Correct	98 ms	11304 KB	Output is correct
21	Correct	73 ms	8636 KB	Output is correct
22	Correct	63 ms	8340 KB	Output is correct
23	Correct	158 ms	11668 KB	Output is correct
24	Correct	65 ms	8184 KB	Output is correct
25	Correct	56 ms	7816 KB	Output is correct
26	Correct	58 ms	7816 KB	Output is correct
27	Correct	2 ms	2636 KB	Output is correct
28	Correct	2 ms	2588 KB	Output is correct
29	Correct	2 ms	2636 KB	Output is correct
30	Correct	2 ms	2636 KB	Output is correct
31	Correct	2 ms	2636 KB	Output is correct
32	Correct	2 ms	2764 KB	Output is correct
33	Correct	4 ms	2764 KB	Output is correct
34	Correct	5 ms	3020 KB	Output is correct
35	Correct	4 ms	2892 KB	Output is correct
36	Correct	35 ms	6940 KB	Output is correct
37	Correct	63 ms	8080 KB	Output is correct
38	Correct	104 ms	11032 KB	Output is correct
39	Correct	116 ms	11588 KB	Output is correct
40	Correct	85 ms	9796 KB	Output is correct
41	Correct	72 ms	7672 KB	Output is correct
42	Correct	57 ms	7672 KB	Output is correct
43	Correct	73 ms	8196 KB	Output is correct
44	Correct	2 ms	2636 KB	Output is correct
45	Correct	2 ms	2636 KB	Output is correct
46	Correct	2 ms	2636 KB	Output is correct
47	Correct	2 ms	2636 KB	Output is correct
48	Correct	2 ms	2636 KB	Output is correct
49	Correct	4 ms	2820 KB	Output is correct
50	Correct	4 ms	2892 KB	Output is correct
51	Correct	5 ms	3020 KB	Output is correct
52	Correct	6 ms	2892 KB	Output is correct
53	Correct	41 ms	7044 KB	Output is correct
54	Correct	111 ms	11048 KB	Output is correct
55	Correct	114 ms	11784 KB	Output is correct
56	Correct	81 ms	9924 KB	Output is correct
57	Correct	154 ms	13248 KB	Output is correct
58	Correct	36 ms	7376 KB	Output is correct
59	Correct	70 ms	8592 KB	Output is correct

답안 #393471

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 10.0 / 10.0

Subtask #3 8.0 / 8.0

Subtask #4 31.0 / 31.0

Subtask #5 44.0 / 44.0

Subtask #1
7.0 / 7.0

Subtask #2
10.0 / 10.0

Subtask #3
8.0 / 8.0

Subtask #4
31.0 / 31.0

Subtask #5
44.0 / 44.0