結果
| 問題 |
No.1065 電柱 / Pole (Easy)
|
| コンテスト | |
| ユーザー |
Enjapma_kyopro
|
| 提出日時 | 2020-05-29 21:40:47 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 311 ms / 2,000 ms |
| コード長 | 3,612 bytes |
| コンパイル時間 | 1,880 ms |
| コンパイル使用メモリ | 177,532 KB |
| 実行使用メモリ | 49,900 KB |
| 最終ジャッジ日時 | 2024-11-06 03:03:05 |
| 合計ジャッジ時間 | 8,275 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 46 |
ソースコード
#include <bits/stdc++.h>
#include <unistd.h>
#include <sys/time.h>
#include <stdlib.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef pair<P, ll> T;
typedef pair<long double , ll> Ps;
long long int INF = 2e18;
const ll fact_table = 3200008;
double Pi = 3.1415926535897932384626;
priority_queue <ll> pql;
priority_queue <P> pqp;
priority_queue <P> bag;
//big priority queue
priority_queue <ll,vector<ll>,greater<ll> > pqls;
priority_queue <Ps,vector<Ps>,greater<Ps> > pqps;
//small priority queue
//top pop
ll dx[8]={1,0,-1,0,1,1,-1,-1};
ll dy[8]={0,1,0,-1,1,-1,-1,1};
char dir[] = "DRUL";
//↓,→,↑,←
#define endl "\n"
#ifdef ENJAPMA
#undef endl
#endif
#define p(x) cout<<x<<endl;
#define el cout<<endl;
#define pe(x) cout<<x<<" ";
#define ps(x) cout<<fixed<<setprecision(25)<<x<<endl;
#define pu(x) cout<<(x);
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define CLEAR(a) a = decltype(a)();
#define pc(x) cout << x << ",";
// const ll mod = 998244353ll;
const ll mod = 1000000007ll;
ll mypow(ll number1,ll number2, ll mod){
if(number2 == 0){
return 1ll;
}else{
ll number3 = mypow(number1,number2 / 2, mod);
number3 *= number3;
number3 %= mod;
if(number2%2==1){
number3 *= number1;
number3 %= mod;
}
return number3;
}
}
void YES(bool condition){
if(condition){
p("YES");
}else{
p("NO");
}
return;
}
void Yes(bool condition){
if(condition){
p("Yes");
}else{
p("No");
}
return;
}
/*
ll fact[fact_table + 5],rfact[fact_table + 5];
void c3_init(){
fact[0] = rfact[0] = 1;
for(ll i=1; i<=fact_table; i++){
fact[i] = (fact[i-1]*i) % mod;
}
rfact[fact_table] = mypow(fact[fact_table],mod - 2, mod);
for(ll i=fact_table; i>=1; i--){
rfact[i-1] = rfact[i] * i;
rfact[i-1] %= mod;
}
return;}
ll c3(ll n,ll r){
return (((fact[n] * rfact[r]) % mod ) * rfact[n-r]) % mod;}
*/
bool multicase = false;
ll n,m,num,a,b,c,d,e,h,q;
ll w, k, ans;
long double x[500005], y[500005];
vector<Ps> G[500005];
long double table[500005];
long double distance(ll a, ll b){
long double xa = x[a], xb = x[b], ya = y[a], yb = y[b];
return sqrt((xa-xb) * (xa-xb) + (ya-yb) * (ya-yb));
}
void solve(){
cin >> n >> m;
ll s, t;
cin >> s >> t;
for(ll i=1;i<=n;i++){
cin >> x[i] >> y[i];
}
for(ll i=1;i<=m;i++){
cin >> a >> b;
long double cost = distance(a, b);
G[a].pb(Ps(cost, b));
G[b].pb(Ps(cost, a));
}
for(ll i=1;i<=n;i++){
table[i] = 9999999999.99;
}
table[s] = 0.0;
pqps.push(Ps(0.0, s));
while(!pqps.empty()){
Ps p = pqps.top();
pqps.pop();
ll v = p.second;
long double nowcost = p.first;
if(nowcost > table[v])continue;
for(int i=0;i<G[v].size();i++){
ll nv = G[v][i].second;
long double newcost = table[v] + G[v][i].first;
if(table[nv] > newcost){
table[nv] = newcost;
pqps.push(Ps(newcost, nv));
}
}
}
long double ans = table[t];
ps(ans);
return;
}
int main(){
// init();
ios::sync_with_stdio(false);
cin.tie(nullptr);
ll q, testcase = 1;
if(multicase){
cin >> q;
}else{
q = 1;
}
while(q--){
// pu("Case ");pu("#");pu(testcase);pu(": ");
solve();
testcase++;
}
// solve();
return 0;
}
Enjapma_kyopro