#include <bits/stdc++.h>
#define eb emplace_back
#define F first
#define S second
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
const ll MAX=1e6+10;
const ll oo=0x3f3f3f3f3f3f3f3f;
ll n,m;
struct edge{
ll d,clr,cst;
edge(ll a,ll b,ll c):d(a),clr(b),cst(c){}
};
vector<edge> G[MAX];
vector<pll> G2[MAX*3];
int main() {
ios_base::sync_with_stdio(0); cin.tie(0);
cin>>n>>m;
for (int i=0;i<m;i++) {
ll a,b,c,p;
cin>>a>>b>>c>>p;
G[a].eb(b,c,p);
G[b].eb(a,c,p);
G2[a].eb(b,p);
G2[b].eb(a,p);
}
int now=n+1;
for (int i=1;i<=n;i++) {
map<int,vector<pll> > ttl;
for (auto eg:G[i]) ttl[eg.clr].eb(eg.d,eg.cst);
for (auto [clr,egs]:ttl) {
ll ttlw=0;
for (auto eg:egs) ttlw+=eg.S;
G2[i].eb(now,0);
for (auto eg:egs) {
G2[now].eb(eg.F,ttlw-eg.S);
G2[eg.F].eb(now,0);
}
++now;
}
}
priority_queue<pll> D;
vector<bool> vis(now+1,0);
vector<ll> d(now+1,oo);
d[1]=0;
D.emplace(0,1);
while (!D.empty()) {
while (!D.empty() and vis[D.top().S]) D.pop();
if (D.empty()) break;
int v=D.top().S;
D.pop();
vis[v]=true;
for (auto [u,w]:G2[v]) {
if (!vis[u] and d[v]+w<d[u]) {
d[u]=d[v]+w;
D.emplace(-d[u],u);
}
}
}
cout<<(d[n]==oo?-1:d[n])<<"\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
28 ms |
94296 KB |
Output is correct |
2 |
Correct |
26 ms |
94312 KB |
Output is correct |
3 |
Correct |
26 ms |
94296 KB |
Output is correct |
4 |
Correct |
23 ms |
94300 KB |
Output is correct |
5 |
Correct |
25 ms |
94300 KB |
Output is correct |
6 |
Correct |
25 ms |
94388 KB |
Output is correct |
7 |
Correct |
25 ms |
94556 KB |
Output is correct |
8 |
Correct |
24 ms |
94344 KB |
Output is correct |
9 |
Correct |
27 ms |
94812 KB |
Output is correct |
10 |
Correct |
26 ms |
94812 KB |
Output is correct |
11 |
Correct |
26 ms |
94812 KB |
Output is correct |
12 |
Correct |
28 ms |
94800 KB |
Output is correct |
13 |
Correct |
26 ms |
94812 KB |
Output is correct |
14 |
Correct |
26 ms |
94804 KB |
Output is correct |
15 |
Correct |
28 ms |
94556 KB |
Output is correct |
16 |
Correct |
26 ms |
94812 KB |
Output is correct |
17 |
Correct |
27 ms |
94760 KB |
Output is correct |
18 |
Correct |
26 ms |
94480 KB |
Output is correct |
19 |
Correct |
25 ms |
94812 KB |
Output is correct |
20 |
Correct |
25 ms |
94544 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
113 ms |
114640 KB |
Output is correct |
2 |
Correct |
72 ms |
103236 KB |
Output is correct |
3 |
Correct |
118 ms |
125132 KB |
Output is correct |
4 |
Correct |
82 ms |
107260 KB |
Output is correct |
5 |
Correct |
406 ms |
154636 KB |
Output is correct |
6 |
Correct |
349 ms |
149808 KB |
Output is correct |
7 |
Correct |
233 ms |
146924 KB |
Output is correct |
8 |
Correct |
293 ms |
146332 KB |
Output is correct |
9 |
Correct |
300 ms |
146216 KB |
Output is correct |
10 |
Correct |
172 ms |
127432 KB |
Output is correct |
11 |
Correct |
117 ms |
120312 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
28 ms |
94296 KB |
Output is correct |
2 |
Correct |
26 ms |
94312 KB |
Output is correct |
3 |
Correct |
26 ms |
94296 KB |
Output is correct |
4 |
Correct |
23 ms |
94300 KB |
Output is correct |
5 |
Correct |
25 ms |
94300 KB |
Output is correct |
6 |
Correct |
25 ms |
94388 KB |
Output is correct |
7 |
Correct |
25 ms |
94556 KB |
Output is correct |
8 |
Correct |
24 ms |
94344 KB |
Output is correct |
9 |
Correct |
27 ms |
94812 KB |
Output is correct |
10 |
Correct |
26 ms |
94812 KB |
Output is correct |
11 |
Correct |
26 ms |
94812 KB |
Output is correct |
12 |
Correct |
28 ms |
94800 KB |
Output is correct |
13 |
Correct |
26 ms |
94812 KB |
Output is correct |
14 |
Correct |
26 ms |
94804 KB |
Output is correct |
15 |
Correct |
28 ms |
94556 KB |
Output is correct |
16 |
Correct |
26 ms |
94812 KB |
Output is correct |
17 |
Correct |
27 ms |
94760 KB |
Output is correct |
18 |
Correct |
26 ms |
94480 KB |
Output is correct |
19 |
Correct |
25 ms |
94812 KB |
Output is correct |
20 |
Correct |
25 ms |
94544 KB |
Output is correct |
21 |
Correct |
113 ms |
114640 KB |
Output is correct |
22 |
Correct |
72 ms |
103236 KB |
Output is correct |
23 |
Correct |
118 ms |
125132 KB |
Output is correct |
24 |
Correct |
82 ms |
107260 KB |
Output is correct |
25 |
Correct |
406 ms |
154636 KB |
Output is correct |
26 |
Correct |
349 ms |
149808 KB |
Output is correct |
27 |
Correct |
233 ms |
146924 KB |
Output is correct |
28 |
Correct |
293 ms |
146332 KB |
Output is correct |
29 |
Correct |
300 ms |
146216 KB |
Output is correct |
30 |
Correct |
172 ms |
127432 KB |
Output is correct |
31 |
Correct |
117 ms |
120312 KB |
Output is correct |
32 |
Correct |
98 ms |
127952 KB |
Output is correct |
33 |
Correct |
111 ms |
124104 KB |
Output is correct |
34 |
Correct |
226 ms |
133528 KB |
Output is correct |
35 |
Correct |
156 ms |
125636 KB |
Output is correct |
36 |
Correct |
201 ms |
130980 KB |
Output is correct |
37 |
Correct |
221 ms |
139716 KB |
Output is correct |
38 |
Correct |
225 ms |
148832 KB |
Output is correct |
39 |
Correct |
136 ms |
140836 KB |
Output is correct |
40 |
Correct |
300 ms |
147772 KB |
Output is correct |
41 |
Correct |
318 ms |
147792 KB |
Output is correct |
42 |
Correct |
298 ms |
143136 KB |
Output is correct |
43 |
Correct |
116 ms |
120264 KB |
Output is correct |
44 |
Correct |
180 ms |
145096 KB |
Output is correct |
45 |
Correct |
276 ms |
135456 KB |
Output is correct |
46 |
Correct |
203 ms |
131636 KB |
Output is correct |
47 |
Correct |
227 ms |
136576 KB |
Output is correct |
48 |
Correct |
359 ms |
159956 KB |
Output is correct |