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답안 #259013

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
259013 2020-08-07T03:35:34 Z ttnhuy313 Olympic Bus (JOI20_ho_t4) C++14
100 / 100
 442 ms 5368 KB 
#include <bits/stdc++.h>
using namespace std;
 
#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 75 ms 632 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 86 ms 512 KB Output is correct
4 Correct 80 ms 584 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 416 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 48 ms 632 KB Output is correct
11 Correct 47 ms 512 KB Output is correct
12 Correct 48 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 40 ms 512 KB Output is correct
15 Correct 40 ms 512 KB Output is correct
16 Correct 41 ms 632 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 396 ms 5040 KB Output is correct
2 Correct 397 ms 4856 KB Output is correct
3 Correct 403 ms 5240 KB Output is correct
4 Correct 85 ms 640 KB Output is correct
5 Correct 60 ms 512 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 24 ms 4344 KB Output is correct
10 Correct 25 ms 4352 KB Output is correct
11 Correct 214 ms 4992 KB Output is correct
12 Correct 212 ms 4984 KB Output is correct
13 Correct 228 ms 5112 KB Output is correct
14 Correct 214 ms 5368 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 78 ms 664 KB Output is correct
2 Correct 7 ms 512 KB Output is correct
3 Correct 364 ms 3832 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 442 ms 4728 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 23 ms 4088 KB Output is correct
9 Correct 25 ms 4096 KB Output is correct
10 Correct 234 ms 4736 KB Output is correct
11 Correct 238 ms 4736 KB Output is correct
12 Correct 236 ms 4856 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 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 242 ms 4984 KB Output is correct
20 Correct 235 ms 4728 KB Output is correct
21 Correct 236 ms 4732 KB Output is correct
22 Correct 235 ms 4736 KB Output is correct

Subtask #4
63.0 / 63.0

# 결과 실행 시간 메모리 Grader output
1 Correct 75 ms 632 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 86 ms 512 KB Output is correct
4 Correct 80 ms 584 KB Output is correct
5 Correct 2 ms 512 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 416 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 48 ms 632 KB Output is correct
11 Correct 47 ms 512 KB Output is correct
12 Correct 48 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 40 ms 512 KB Output is correct
15 Correct 40 ms 512 KB Output is correct
16 Correct 41 ms 632 KB Output is correct
17 Correct 396 ms 5040 KB Output is correct
18 Correct 397 ms 4856 KB Output is correct
19 Correct 403 ms 5240 KB Output is correct
20 Correct 85 ms 640 KB Output is correct
21 Correct 60 ms 512 KB Output is correct
22 Correct 1 ms 512 KB Output is correct
23 Correct 1 ms 512 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 24 ms 4344 KB Output is correct
26 Correct 25 ms 4352 KB Output is correct
27 Correct 214 ms 4992 KB Output is correct
28 Correct 212 ms 4984 KB Output is correct
29 Correct 228 ms 5112 KB Output is correct
30 Correct 214 ms 5368 KB Output is correct
31 Correct 78 ms 664 KB Output is correct
32 Correct 7 ms 512 KB Output is correct
33 Correct 364 ms 3832 KB Output is correct
34 Correct 1 ms 512 KB Output is correct
35 Correct 442 ms 4728 KB Output is correct
36 Correct 1 ms 512 KB Output is correct
37 Correct 1 ms 384 KB Output is correct
38 Correct 23 ms 4088 KB Output is correct
39 Correct 25 ms 4096 KB Output is correct
40 Correct 234 ms 4736 KB Output is correct
41 Correct 238 ms 4736 KB Output is correct
42 Correct 236 ms 4856 KB Output is correct
43 Correct 1 ms 384 KB Output is correct
44 Correct 1 ms 384 KB Output is correct
45 Correct 1 ms 384 KB Output is correct
46 Correct 0 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 242 ms 4984 KB Output is correct
50 Correct 235 ms 4728 KB Output is correct
51 Correct 236 ms 4732 KB Output is correct
52 Correct 235 ms 4736 KB Output is correct
53 Correct 414 ms 4768 KB Output is correct
54 Correct 409 ms 4856 KB Output is correct
55 Correct 408 ms 4860 KB Output is correct
56 Correct 82 ms 512 KB Output is correct
57 Correct 82 ms 512 KB Output is correct
58 Correct 220 ms 3960 KB Output is correct
59 Correct 210 ms 3840 KB Output is correct
60 Correct 211 ms 3960 KB Output is correct
61 Correct 213 ms 3960 KB Output is correct
62 Correct 209 ms 3840 KB Output is correct
63 Correct 207 ms 3964 KB Output is correct
64 Correct 299 ms 3960 KB Output is correct
65 Correct 292 ms 4088 KB Output is correct
66 Correct 273 ms 3968 KB Output is correct
67 Correct 19 ms 3956 KB Output is correct
68 Correct 24 ms 4344 KB Output is correct
69 Correct 25 ms 4344 KB Output is correct
70 Correct 213 ms 4968 KB Output is correct
71 Correct 211 ms 4856 KB Output is correct
72 Correct 212 ms 4856 KB Output is correct
73 Correct 213 ms 5244 KB Output is correct
74 Correct 222 ms 5176 KB Output is correct