Submission #647000

#	Time	Username	Problem	Language	Result	Execution time	Memory
647000		inksamurai	Ceste (COCI17_ceste)	C++17	0 / 160	471 ms	764 KiB

ceste

#include <bits/stdc++.h>
#define int ll
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define vec(...) vector<__VA_ARGS__>
#define _3SJjfN1 ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
using pii=pair<int,int>;
using vi=vector<int>;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}
// e

signed main(){
_3SJjfN1;
	int n,m;
	cin>>n>>m;
	using T=pair<pii,int>;
	vec(vec(T)) adj(n);
	vec(pii) es;
	rep(i,m){
		int u,v,c0,c1;
		cin>>u>>v>>c0>>c1;
		u-=1,v-=1;
		adj[u].pb(T(pii(c0,c1),v));
		adj[v].pb(T(pii(c0,c1),u));
		es.pb(pii(c0,c1));
	}
	const int inf=1e18;
	vi pns(n,inf);
	auto dijkstra=[&](int p,int q)->void{
		struct state{
			int x,y,p,q,v;
			state(int _x=0,int _y=0,int _p=0,int _q=0,int _v=0):
			x(_x),y(_y),p(_p),q(_q),v(_v){};
			bool operator<(const state&a)const{
				return pii((x+p)*(y+q),v)>pii((a.x+p)*(a.y+q),a.v);
			}
		};
		priority_queue<state> pq;
		pq.push(state(0,0,p,q,0));
		vec(pii) d(n,{inf,inf});
		d[0]=pii(0,0);
		while(sz(pq)){
			auto top=pq.top();
			int v=top.v,x=top.x,y=top.y;
			pq.pop();
			if(d[v]!=pii(x,y)) continue;
			for(auto e:adj[v]){
				int c0=e.fi.fi,c1=e.fi.se,u=e.se;
				// if(v==0) print(u);
				if(d[u].fi==inf or (d[u].fi+p)*(d[u].se+q)>(x+c0+p)*(y+c1+q)){
					d[u]={x+c0,y+c1};
					pq.push(state(x+c0,y+c1,p,q,u));
				}
			}	
		}
		rep(v,n){
			pns[v]=min(pns[v],d[v].fi*d[v].se);
		}
	};
	// dijkstra(3,2);
	for(auto p:es){
		print(p.fi,p.se);
		dijkstra(p.fi,p.se);
	}
	rng(v,1,n){
		print(pns[v]==inf?-1:pns[v]);
	}
}

• Subtask 1: 0 / 16
• Subtask 2: 0 / 16
• Subtask 3: 0 / 16
• Subtask 4: 0 / 16
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 16
• Subtask 8: 0 / 16
• Subtask 9: 0 / 16
• Subtask 10: 0 / 16