답안 #255139

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
255139	2020-07-31T10:24:00 Z	Goolakh	Olympic Bus (JOI20_ho_t4)	C++17	100 / 100	461 ms	5364 KB

ho_t4

#include <bits/stdc++.h>
using namespace std;
 
#pragma GCC optimize("O2,no-stack-protector,unroll-loops,fast-math") 
 
#define F first
#define S second
#define pb push_back
#define SZ(x) (ll)(x.size())
#define all(x) x.begin(),x.end()
#define MP make_pair
 
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
 
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll maxn=2e2+10, maxm=5e4+10, lg=21, mod=1e9+7, inf=1e18;

ll n,m,V[maxm],U[maxm],C[maxm],ans[maxm];
bool mk[maxn];
void dij(ll sr,vector<ll> adj[],ll dis[],ll par[]){
	for(int i=0;i<=n;i++) dis[i]=inf, par[i]=mk[i]=0;
	dis[sr]=0;
	while(1){
		ll v=0;
		for(int i=1;i<=n;i++)if(!mk[i] && dis[i]<dis[v]) v=i;
		if(!v) return;
		mk[v]=1;
		for(auto i:adj[v]){
			ll u=V[i]^U[i]^v;
			if(dis[v]+C[i]<dis[u]) dis[u]=dis[v]+C[par[u]=i];
		}
	}
}

ll dis[3][maxn],py[3][maxn];
vector<ll> g[maxn],rg[maxn],gg[maxn];
bool dd[maxm];
void solve(ll a,ll b){
	dij(a,g,dis[0],py[0]), dij(b,rg,dis[1],py[1]);
	ans[0]+=dis[0][b];
	memset(dd,0,sizeof(dd)); for(int i=1;i<=n;i++) dd[py[0][i]]=dd[py[1][i]]=1;
	for(int i=1;i<=m;i++){
		if(dis[0][U[i]]>=inf || dis[1][V[i]]>=inf){
			ans[i]+=inf;
			continue;
		}
		if(!dd[i]) ans[i]+=min(dis[0][b],dis[0][U[i]]+C[i]+dis[1][V[i]]);
		else{
			for(int i=1;i<=n;i++) gg[i].clear();
			for(int j=1;j<=m;j++)if(i!=j) gg[V[j]].pb(j);
			gg[U[i]].pb(i);
			dij(a,gg,dis[2],py[2]);
			ans[i]+=dis[2][b];
		}
	}
}

int main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	
	//memset(ans,69,sizeof(ans));
	cin>>n>>m;
	for(int i=1;i<=m;i++){
		cin>>V[i]>>U[i]>>C[i]>>ans[i];
		g[V[i]].pb(i), rg[U[i]].pb(i);
	}
	solve(1,n), solve(n,1);
	ll jj=inf;
	for(int i=0;i<=m;i++) jj=min(jj,ans[i]);
	cout<<(jj>=inf ? -1:jj);
	
	return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	64 ms	640 KB	Output is correct
2	Correct	1 ms	512 KB	Output is correct
3	Correct	59 ms	512 KB	Output is correct
4	Correct	58 ms	512 KB	Output is correct
5	Correct	2 ms	512 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	512 KB	Output is correct
10	Correct	38 ms	512 KB	Output is correct
11	Correct	36 ms	512 KB	Output is correct
12	Correct	37 ms	512 KB	Output is correct
13	Correct	1 ms	512 KB	Output is correct
14	Correct	30 ms	512 KB	Output is correct
15	Correct	30 ms	512 KB	Output is correct
16	Correct	30 ms	512 KB	Output is correct

Subtask #2
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	400 ms	5024 KB	Output is correct
2	Correct	396 ms	4856 KB	Output is correct
3	Correct	401 ms	5160 KB	Output is correct
4	Correct	65 ms	640 KB	Output is correct
5	Correct	46 ms	632 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	1 ms	512 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	35 ms	4344 KB	Output is correct
10	Correct	24 ms	4352 KB	Output is correct
11	Correct	224 ms	4984 KB	Output is correct
12	Correct	213 ms	5240 KB	Output is correct
13	Correct	217 ms	5112 KB	Output is correct
14	Correct	214 ms	5364 KB	Output is correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	67 ms	512 KB	Output is correct
2	Correct	6 ms	512 KB	Output is correct
3	Correct	373 ms	3832 KB	Output is correct
4	Correct	1 ms	512 KB	Output is correct
5	Correct	461 ms	4700 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	20 ms	4096 KB	Output is correct
9	Correct	22 ms	4096 KB	Output is correct
10	Correct	240 ms	4736 KB	Output is correct
11	Correct	245 ms	4728 KB	Output is correct
12	Correct	240 ms	4864 KB	Output is correct
13	Correct	0 ms	384 KB	Output is correct
14	Correct	0 ms	384 KB	Output is correct
15	Correct	0 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	0 ms	384 KB	Output is correct
18	Correct	0 ms	384 KB	Output is correct
19	Correct	238 ms	4864 KB	Output is correct
20	Correct	244 ms	4600 KB	Output is correct
21	Correct	243 ms	4600 KB	Output is correct
22	Correct	239 ms	4844 KB	Output is correct

Subtask #4
63.0 / 63.0

#	결과	실행 시간	메모리	Grader output
1	Correct	64 ms	640 KB	Output is correct
2	Correct	1 ms	512 KB	Output is correct
3	Correct	59 ms	512 KB	Output is correct
4	Correct	58 ms	512 KB	Output is correct
5	Correct	2 ms	512 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	1 ms	512 KB	Output is correct
10	Correct	38 ms	512 KB	Output is correct
11	Correct	36 ms	512 KB	Output is correct
12	Correct	37 ms	512 KB	Output is correct
13	Correct	1 ms	512 KB	Output is correct
14	Correct	30 ms	512 KB	Output is correct
15	Correct	30 ms	512 KB	Output is correct
16	Correct	30 ms	512 KB	Output is correct
17	Correct	400 ms	5024 KB	Output is correct
18	Correct	396 ms	4856 KB	Output is correct
19	Correct	401 ms	5160 KB	Output is correct
20	Correct	65 ms	640 KB	Output is correct
21	Correct	46 ms	632 KB	Output is correct
22	Correct	1 ms	512 KB	Output is correct
23	Correct	1 ms	512 KB	Output is correct
24	Correct	0 ms	384 KB	Output is correct
25	Correct	35 ms	4344 KB	Output is correct
26	Correct	24 ms	4352 KB	Output is correct
27	Correct	224 ms	4984 KB	Output is correct
28	Correct	213 ms	5240 KB	Output is correct
29	Correct	217 ms	5112 KB	Output is correct
30	Correct	214 ms	5364 KB	Output is correct
31	Correct	67 ms	512 KB	Output is correct
32	Correct	6 ms	512 KB	Output is correct
33	Correct	373 ms	3832 KB	Output is correct
34	Correct	1 ms	512 KB	Output is correct
35	Correct	461 ms	4700 KB	Output is correct
36	Correct	0 ms	384 KB	Output is correct
37	Correct	0 ms	384 KB	Output is correct
38	Correct	20 ms	4096 KB	Output is correct
39	Correct	22 ms	4096 KB	Output is correct
40	Correct	240 ms	4736 KB	Output is correct
41	Correct	245 ms	4728 KB	Output is correct
42	Correct	240 ms	4864 KB	Output is correct
43	Correct	0 ms	384 KB	Output is correct
44	Correct	0 ms	384 KB	Output is correct
45	Correct	0 ms	384 KB	Output is correct
46	Correct	1 ms	384 KB	Output is correct
47	Correct	0 ms	384 KB	Output is correct
48	Correct	0 ms	384 KB	Output is correct
49	Correct	238 ms	4864 KB	Output is correct
50	Correct	244 ms	4600 KB	Output is correct
51	Correct	243 ms	4600 KB	Output is correct
52	Correct	239 ms	4844 KB	Output is correct
53	Correct	411 ms	4736 KB	Output is correct
54	Correct	410 ms	4728 KB	Output is correct
55	Correct	406 ms	4756 KB	Output is correct
56	Correct	60 ms	584 KB	Output is correct
57	Correct	62 ms	512 KB	Output is correct
58	Correct	202 ms	3836 KB	Output is correct
59	Correct	209 ms	3840 KB	Output is correct
60	Correct	212 ms	3960 KB	Output is correct
61	Correct	207 ms	3860 KB	Output is correct
62	Correct	200 ms	3832 KB	Output is correct
63	Correct	202 ms	3840 KB	Output is correct
64	Correct	284 ms	3968 KB	Output is correct
65	Correct	274 ms	3968 KB	Output is correct
66	Correct	256 ms	3968 KB	Output is correct
67	Correct	18 ms	3956 KB	Output is correct
68	Correct	24 ms	4344 KB	Output is correct
69	Correct	27 ms	4344 KB	Output is correct
70	Correct	216 ms	4960 KB	Output is correct
71	Correct	218 ms	4856 KB	Output is correct
72	Correct	216 ms	4856 KB	Output is correct
73	Correct	215 ms	4984 KB	Output is correct
74	Correct	216 ms	5112 KB	Output is correct

답안 #255139

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 11.0 / 11.0

Subtask #3 21.0 / 21.0

Subtask #4 63.0 / 63.0

Subtask #1
5.0 / 5.0

Subtask #2
11.0 / 11.0

Subtask #3
21.0 / 21.0

Subtask #4
63.0 / 63.0