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Submission #1082408

# Submission time Handle Problem Language Result Execution time Memory
1082408 2024-08-31T09:55:32 Z hahahaha Robot (JOI21_ho_t4) C++17
0 / 100
 261 ms 132124 KB 
#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;
			for (auto eg:egs) {
				G2[i].eb(eg.F,ttlw-eg.S);
			}
		}
	}
	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;
}

Subtask #1
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 94288 KB Output is correct
2 Correct 25 ms 94340 KB Output is correct
3 Correct 28 ms 94344 KB Output is correct
4 Correct 26 ms 94300 KB Output is correct
5 Correct 25 ms 94300 KB Output is correct
6 Correct 31 ms 94264 KB Output is correct
7 Correct 27 ms 94360 KB Output is correct
8 Correct 25 ms 94300 KB Output is correct
9 Incorrect 28 ms 94544 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 108844 KB Output is correct
2 Correct 53 ms 100756 KB Output is correct
3 Correct 95 ms 118740 KB Output is correct
4 Correct 72 ms 103764 KB Output is correct
5 Incorrect 261 ms 132124 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 94288 KB Output is correct
2 Correct 25 ms 94340 KB Output is correct
3 Correct 28 ms 94344 KB Output is correct
4 Correct 26 ms 94300 KB Output is correct
5 Correct 25 ms 94300 KB Output is correct
6 Correct 31 ms 94264 KB Output is correct
7 Correct 27 ms 94360 KB Output is correct
8 Correct 25 ms 94300 KB Output is correct
9 Incorrect 28 ms 94544 KB Output isn't correct
10 Halted 0 ms 0 KB -