結果

問題 No.2354 Poor Sight in Winter
ユーザー woodywoodywoodywoody
提出日時 2023-06-17 02:00:04
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 168 ms / 2,000 ms
コード長 5,496 bytes
コンパイル時間 4,035 ms
コンパイル使用メモリ 236,052 KB
実行使用メモリ 7,608 KB
最終ジャッジ日時 2023-09-07 01:05:08
合計ジャッジ時間 7,325 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge11
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
4,380 KB
testcase_01 AC 1 ms
4,380 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 2 ms
4,380 KB
testcase_04 AC 2 ms
4,380 KB
testcase_05 AC 1 ms
4,380 KB
testcase_06 AC 2 ms
4,376 KB
testcase_07 AC 1 ms
4,384 KB
testcase_08 AC 1 ms
4,380 KB
testcase_09 AC 2 ms
4,380 KB
testcase_10 AC 2 ms
4,380 KB
testcase_11 AC 152 ms
7,032 KB
testcase_12 AC 148 ms
7,064 KB
testcase_13 AC 168 ms
7,516 KB
testcase_14 AC 161 ms
7,408 KB
testcase_15 AC 154 ms
7,464 KB
testcase_16 AC 157 ms
7,608 KB
testcase_17 AC 160 ms
7,328 KB
testcase_18 AC 67 ms
5,812 KB
testcase_19 AC 116 ms
6,676 KB
testcase_20 AC 76 ms
5,748 KB
testcase_21 AC 4 ms
4,380 KB
testcase_22 AC 31 ms
4,380 KB
testcase_23 AC 31 ms
4,380 KB
testcase_24 AC 100 ms
6,340 KB
testcase_25 AC 22 ms
4,376 KB
testcase_26 AC 19 ms
4,380 KB
testcase_27 AC 2 ms
4,376 KB
testcase_28 AC 4 ms
4,384 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include<bits/stdc++.h>
#include<atcoder/all>
#define rep(i,b) for(int i=0;i<b;i++)
#define rrep(i,b) for(int i=b-1;i>=0;i--)
#define rep1(i,b) for(int i=1;i<b;i++)
#define repx(i,x,b) for(int i=x;i<b;i++)
#define rrepx(i,x,b) for(int i=b-1;i>=x;i--)
#define fore(i,a) for(auto& i:a)
#define rng(x) (x).begin(), (x).end()
#define rrng(x) (x).rbegin(), (x).rend()
#define sz(x) ((int)(x).size())
#define pb push_back
#define fi first
#define se second
#define pcnt __builtin_popcountll

using namespace std;
using namespace atcoder;

using ll = long long;
using ld = long double;
template<typename T> using mpq = priority_queue<T, vector<T>, greater<T>>;
template<typename T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<typename T> bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<typename T> ll sumv(const vector<T>&a){ll res(0);for(auto&&x:a)res+=x;return res;}
bool yn(bool a) { if(a) {cout << "Yes" << endl; return true;} else {cout << "No" << endl; return false;}}
#define dame { cout << "No" << endl; return;}
#define dame1 { cout << -1 << endl; return;}
#define cout2(x,y) cout << x << " " << y << endl;
#define coutp(p) cout << p.fi << " " << p.se << endl;
#define out cout << ans << endl;
#define outd cout << fixed << setprecision(20) << ans << endl;
#define outm cout << ans.val() << endl;
#define outv fore(yans , ans) cout << yans << "\n";
#define outdv fore(yans , ans) cout << yans.val() << "\n";
#define coutv(v) {fore(vy , v) {cout << vy << " ";} cout << endl;}
#define coutv2(v) fore(vy , v) cout << vy << "\n";
#define coutvm(v) {fore(vy , v) {cout << vy.val() << " ";} cout << endl;}
#define coutvm2(v) fore(vy , v) cout << vy.val() << "\n";
using pll = pair<ll,ll>;using pil = pair<int,ll>;using pli = pair<ll,int>;using pii = pair<int,int>;using pdd = pair<ld,ld>;
using vi = vector<int>;using vd = vector<ld>;using vl = vector<ll>;using vs = vector<string>;using vb = vector<bool>;
using vpii = vector<pii>;using vpli = vector<pli>;using vpll = vector<pll>;using vpil = vector<pil>;
using vvi = vector<vector<int>>;using vvl = vector<vector<ll>>;using vvs = vector<vector<string>>;using vvb = vector<vector<bool>>;
using vvpii = vector<vector<pii>>;using vvpli = vector<vector<pli>>;using vvpll = vector<vpll>;using vvpil = vector<vpil>;
using mint = modint998244353;
//using mint = modint1000000007;
//using mint = dynamic_modint<0>;
using vm = vector<mint>;
using vvm = vector<vector<mint>>;
vector<int> dx={1,0,-1,0,1,1,-1,-1},dy={0,1,0,-1,1,-1,1,-1};
ll gcd(ll a, ll b) { return a?gcd(b%a,a):b;}
ll lcm(ll a, ll b) { return a/gcd(a,b)*b;}
#define yes {cout <<"Yes"<<endl;}
#define yesr { cout <<"Yes"<<endl; return;}
#define no {cout <<"No"<<endl;}
#define nor { cout <<"No"<<endl; return;}
const double eps = 1e-10;
const ll LINF = 1001002003004005006ll;
const int INF = 1001001001;
#ifdef MY_LOCAL_DEBUG
#define show(x) cerr<<#x<<" = "<<x<<endl
#define showp(p) cerr<<#p<<" = "<<p.fi<<" : "<<p.se<<endl
#define show2(x,y) cerr<<#x<<" = "<<x<<" : "<<#y<<" = "<<y<<endl
#define show3(x,y,z) cerr<<#x<<" = "<<x<<" : "<<#y<<" = "<<y<<" : "<<#z<<" = "<<z<<endl
#define show4(x,y,z,x2) cerr<<#x<<" = "<<x<<" : "<<#y<<" = "<<y<<" : "<<#z<<" = "<<z<<" : "<<#x2<<" = "<<x2<<endl
#define test(x) cout << "test" << x << endl
#define showv(v) {fore(vy , v) {cout << vy << " ";} cout << endl;}
#define showv2(v) fore(vy , v) cout << vy << "\n";
#define showvm(v) {fore(vy , v) {cout << vy.val() << " ";} cout << endl;}
#define showvm2(v) fore(vy , v) cout << vy.val() << "\n";
#else
#define show(x)
#define showp(p)
#define show2(x,y)
#define show3(x,y,z)
#define show4(x,y,z,x2)
#define test(x)
#define showv(v)
#define showv2(v)
#define showvm(v)
#define showvm2(v)
#endif

struct edge{
    int from,to;
    ll cost;

    edge(int from_=0,int to_=0,ll cost_=0) : from(from_),to(to_),cost(cost_) {}
};

void solve(){
    int n,k; cin>>n>>k;
    int sx,sy,gx,gy;
    {
        int a,b,c,d; cin>>a>>b>>c>>d;
        sx = a+b;
        sy = a-b;
        gx = c+d;
        gy = c-d;
    }
    vi x(n+2),y(n+2);
    rep(i,n){
        int a,b; cin>>a>>b;
        x[i] = a+b;
        y[i] = a-b;
    }
    int st = n;
    int go = st+1;
    x[n] = sx;
    y[n] = sy;
    x[n+1] = gx;
    y[n+1] = gy;
    n += 2;
    auto check = [&](int mid)->bool{
        assert(mid>0);
        vector<vector<edge>> e(n);
        rep(i,n) rep(j,n){
            if (i==j) continue;
            int d = max(abs(x[i]-x[j]),abs(y[i]-y[j]))-1;
            e[i].pb(edge(i,j,d/(mid)));
        }
        vector<ll> dist(n+2,LINF);
        mpq<pli> q;
        
        dist[st] = 0;
        q.push({dist[st] , st});
        
        while(!q.empty()){
            pli p = q.top();
            q.pop();
            ll dist_dum = p.first;
            int from = p.second;
        
            if (dist[from] < dist_dum) continue;
        
            fore(ey , e[from]){
                int to = ey.to;
                ll cost = ey.cost;
        
                if (chmin(dist[to] , dist_dum + cost)){
                    q.push({dist[to] , to});
                }
            }
        }
        return (dist[go]<=k);
    };
    int l = 0,u = INF;
    while(u-l>1){
        int mid = (l+u)/2;
        if (check(mid)) u = mid;
        else l = mid;
    }
    cout << u << endl;
    

    return;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    //cin>>t;

    rep(i,t){
        solve();
    }

    return 0;
}
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