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Submission #939450

# Submission time Handle Problem Language Result Execution time Memory
939450 2024-03-06T11:25:00 Z koukirocks Robot (JOI21_ho_t4) C++17
100 / 100
 450 ms 160112 KB 
#include <bits/stdc++.h>
#define speed ios_base::sync_with_stdio(0); cin.tie(0)
#define all(x) (x).begin(),(x).end()
 
using namespace std;
typedef long long ll;
typedef double db;
typedef long double ldb;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
 
const ll MAX=1e6+10,P=998244353;
const ll INF=0x3f3f3f3f,oo=0x3f3f3f3f3f3f3f3f;

ll n,m;

struct edge{
	ll des,clr,cst;
	edge(ll _des,ll _clr,ll _cst):des(_des),clr(_clr),cst(_cst){}
};

vector<edge> G[MAX];
vector<pll> G2[MAX*3];

int main() {
	speed;
	cin>>n>>m;
	for (int i=0;i<m;i++) {
		ll a,b,c,p;
		cin>>a>>b>>c>>p;
		G[a].emplace_back(b,c,p);
		G[b].emplace_back(a,c,p);
		G2[a].emplace_back(b,p);
		G2[b].emplace_back(a,p);
	}
	ll now=n+1;
	for (int i=1;i<=n;i++) {
		map<int,vector<pll> > ttl;
		for (auto eg:G[i]) ttl[eg.clr].emplace_back(eg.des,eg.cst);
		for (auto [clr,egs]:ttl) {
			ll ttlw=0;
			for (auto eg:egs) ttlw+=eg.second;
			G2[i].push_back({now,0});
			for (auto eg:egs) {
				G2[now].emplace_back(eg.first,ttlw-eg.second);
				G2[eg.first].emplace_back(now,0);
			}
//			cout<<i<<" "<<clr<<" "<<now<<"\n";
			now++;
		}
	}
//	for (int i=1;i<now;i++) {
//		cout<<i<<".\n";
//		for (auto j:G2[i]) {
//			cout<<j.first<<" "<<j.second<<"\n";
//		}
//		cout<<"----\n";
//	}
	priority_queue<pll> D;
	vector<bool> vis(now+1,0);
	vector<ll> dis(now+1,oo);
	dis[1]=0;
	D.emplace(0,1);
	while (!D.empty()) {
		while (!D.empty() and vis[D.top().second]) D.pop();
		if (D.empty()) break;
		int v=D.top().second;
		D.pop();
		vis[v]=true;
		for (auto [u,w]:G2[v]) {
			if (!vis[u] and dis[v]+w<dis[u]) {
				dis[u]=dis[v]+w;
				D.emplace(-dis[u],u);
			}
		}
	}
	cout<<(dis[n]==oo?-1:dis[n])<<"\n";
	return 0;
}

Subtask #1
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94288 KB Output is correct
2 Correct 22 ms 94300 KB Output is correct
3 Correct 23 ms 94296 KB Output is correct
4 Correct 24 ms 94300 KB Output is correct
5 Correct 21 ms 94296 KB Output is correct
6 Correct 23 ms 94296 KB Output is correct
7 Correct 23 ms 94556 KB Output is correct
8 Correct 24 ms 94300 KB Output is correct
9 Correct 24 ms 94812 KB Output is correct
10 Correct 24 ms 94812 KB Output is correct
11 Correct 26 ms 94808 KB Output is correct
12 Correct 23 ms 94868 KB Output is correct
13 Correct 23 ms 94812 KB Output is correct
14 Correct 23 ms 94808 KB Output is correct
15 Correct 23 ms 94556 KB Output is correct
16 Correct 24 ms 95064 KB Output is correct
17 Correct 23 ms 94556 KB Output is correct
18 Correct 23 ms 94560 KB Output is correct
19 Correct 22 ms 94812 KB Output is correct
20 Correct 24 ms 94552 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 114384 KB Output is correct
2 Correct 60 ms 103496 KB Output is correct
3 Correct 123 ms 125128 KB Output is correct
4 Correct 85 ms 107420 KB Output is correct
5 Correct 450 ms 158992 KB Output is correct
6 Correct 364 ms 151364 KB Output is correct
7 Correct 228 ms 148184 KB Output is correct
8 Correct 338 ms 146768 KB Output is correct
9 Correct 337 ms 146256 KB Output is correct
10 Correct 223 ms 127512 KB Output is correct
11 Correct 138 ms 120228 KB Output is correct

Subtask #3
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94288 KB Output is correct
2 Correct 22 ms 94300 KB Output is correct
3 Correct 23 ms 94296 KB Output is correct
4 Correct 24 ms 94300 KB Output is correct
5 Correct 21 ms 94296 KB Output is correct
6 Correct 23 ms 94296 KB Output is correct
7 Correct 23 ms 94556 KB Output is correct
8 Correct 24 ms 94300 KB Output is correct
9 Correct 24 ms 94812 KB Output is correct
10 Correct 24 ms 94812 KB Output is correct
11 Correct 26 ms 94808 KB Output is correct
12 Correct 23 ms 94868 KB Output is correct
13 Correct 23 ms 94812 KB Output is correct
14 Correct 23 ms 94808 KB Output is correct
15 Correct 23 ms 94556 KB Output is correct
16 Correct 24 ms 95064 KB Output is correct
17 Correct 23 ms 94556 KB Output is correct
18 Correct 23 ms 94560 KB Output is correct
19 Correct 22 ms 94812 KB Output is correct
20 Correct 24 ms 94552 KB Output is correct
21 Correct 117 ms 114384 KB Output is correct
22 Correct 60 ms 103496 KB Output is correct
23 Correct 123 ms 125128 KB Output is correct
24 Correct 85 ms 107420 KB Output is correct
25 Correct 450 ms 158992 KB Output is correct
26 Correct 364 ms 151364 KB Output is correct
27 Correct 228 ms 148184 KB Output is correct
28 Correct 338 ms 146768 KB Output is correct
29 Correct 337 ms 146256 KB Output is correct
30 Correct 223 ms 127512 KB Output is correct
31 Correct 138 ms 120228 KB Output is correct
32 Correct 102 ms 127952 KB Output is correct
33 Correct 119 ms 124108 KB Output is correct
34 Correct 217 ms 133572 KB Output is correct
35 Correct 180 ms 125776 KB Output is correct
36 Correct 239 ms 131008 KB Output is correct
37 Correct 303 ms 142276 KB Output is correct
38 Correct 317 ms 149264 KB Output is correct
39 Correct 139 ms 140784 KB Output is correct
40 Correct 374 ms 147816 KB Output is correct
41 Correct 363 ms 147828 KB Output is correct
42 Correct 364 ms 143196 KB Output is correct
43 Correct 155 ms 120212 KB Output is correct
44 Correct 178 ms 144900 KB Output is correct
45 Correct 308 ms 135368 KB Output is correct
46 Correct 278 ms 131408 KB Output is correct
47 Correct 293 ms 136656 KB Output is correct
48 Correct 439 ms 160112 KB Output is correct