結果

問題 No.1065 電柱 / Pole (Easy)
ユーザー Konton7Konton7
提出日時 2020-05-29 22:43:07
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 133 ms / 2,000 ms
コード長 5,391 bytes
コンパイル時間 2,517 ms
コンパイル使用メモリ 210,728 KB
実行使用メモリ 17,408 KB
最終ジャッジ日時 2024-04-24 00:09:04
合計ジャッジ時間 6,698 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
(要ログイン)

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 2 ms
5,248 KB
testcase_01 AC 1 ms
5,376 KB
testcase_02 AC 57 ms
10,368 KB
testcase_03 AC 74 ms
14,412 KB
testcase_04 AC 76 ms
14,284 KB
testcase_05 AC 64 ms
14,416 KB
testcase_06 AC 64 ms
14,284 KB
testcase_07 AC 26 ms
7,040 KB
testcase_08 AC 92 ms
17,152 KB
testcase_09 AC 10 ms
5,376 KB
testcase_10 AC 44 ms
9,472 KB
testcase_11 AC 31 ms
7,552 KB
testcase_12 AC 18 ms
5,376 KB
testcase_13 AC 71 ms
9,728 KB
testcase_14 AC 69 ms
11,900 KB
testcase_15 AC 86 ms
13,064 KB
testcase_16 AC 44 ms
6,784 KB
testcase_17 AC 95 ms
13,628 KB
testcase_18 AC 34 ms
5,888 KB
testcase_19 AC 89 ms
13,828 KB
testcase_20 AC 24 ms
6,272 KB
testcase_21 AC 39 ms
6,272 KB
testcase_22 AC 80 ms
12,416 KB
testcase_23 AC 3 ms
5,376 KB
testcase_24 AC 2 ms
5,376 KB
testcase_25 AC 16 ms
5,376 KB
testcase_26 AC 49 ms
8,832 KB
testcase_27 AC 47 ms
8,064 KB
testcase_28 AC 76 ms
11,532 KB
testcase_29 AC 11 ms
5,376 KB
testcase_30 AC 82 ms
13,872 KB
testcase_31 AC 51 ms
11,052 KB
testcase_32 AC 34 ms
8,192 KB
testcase_33 AC 74 ms
13,812 KB
testcase_34 AC 31 ms
6,400 KB
testcase_35 AC 81 ms
13,208 KB
testcase_36 AC 2 ms
5,376 KB
testcase_37 AC 2 ms
5,376 KB
testcase_38 AC 2 ms
5,376 KB
testcase_39 AC 2 ms
5,376 KB
testcase_40 AC 1 ms
5,376 KB
testcase_41 AC 133 ms
17,408 KB
testcase_42 AC 35 ms
7,680 KB
testcase_43 AC 68 ms
10,752 KB
testcase_44 AC 23 ms
6,272 KB
testcase_45 AC 66 ms
10,496 KB
testcase_46 AC 2 ms
5,376 KB
testcase_47 AC 2 ms
5,376 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>

using namespace std;
using ll = long long;
using VI = vector<int>;
using VL = vector<ll>;
using VS = vector<string>;
using VB = vector<bool>;
using VVI = vector<VI>;
using VVL = vector<VL>;
using PII = std::pair<int, int>;
using PLL = std::pair<ll, ll>;
using TI3 = std::tuple<int, int, int>;
using TI4 = std::tuple<int, int, int, int>;
using TL3 = std::tuple<ll, ll, ll>;
using TL4 = std::tuple<ll, ll, ll, ll>;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
#define rep3(i, s, n, d) for (int i = (s); i < (int)(n); i += (d))
#define allpt(v) (v).begin(), (v).end()
#define allpt_c(v) (v).cbegin(), (v).cend()
#define allpt_r(v) (v).rbegin(), (v).rend()

const int mod1 = 1e9 + 7, mod2 = 998244353, mod3 = 1e9 + 9;
const int mod = mod1;
const ll inf = 1e18;

const string wsp = " ";
const string tb = "\t";
const string rt = "\n";

template <typename T>
void show1dvec(const vector<T> &v)
{
    if (v.size() == 0)
        return;
    int n = v.size() - 1;
    rep(i, n) cout << v[i] << wsp;
    cout << v[n] << rt;

    return;
}

template <typename T>
void show2dvec(const vector<vector<T>> &v)
{
    int n = v.size();
    rep(i, n) show1dvec(v[i]);
}

template <typename T, typename S>
void show1dpair(const vector<pair<T, S>> &v)
{
    int n = v.size();
    rep(i, n) cout << v[i].first << wsp << v[i].second << rt;
    return;
}

template <typename T, typename S>
void pairzip(const vector<pair<T, S>> &v, vector<T> &t, vector<T> &s)
{
    int n = v.size();
    rep(i, n)
    {
        t.push_back(v[i].first);
        s.push_back(v[i].second);
    }
    return;
}

template <typename T>
void maxvec(vector<T> &v)
{
    T s = v[0];
    int n = v.size();
    rep(i, n - 1)
    {
        if (s > v[i + 1])
        {
            v[i + 1] = s;
        }
        s = v[i + 1];
    }
}

template <typename T, typename S>
bool myfind(T t, S s)
{
    return find(t.cbegin(), t.cend(), s) != t.cend();
}

bool check(int y, int x, int h, int w)
{
    return 0 <= y && y < h && 0 <= x && x < w;
}

template <typename T>
vector<T> cumsum(const vector<T> &v)
{
    T s = 0;
    vector<T> ret;

    rep(i, v.size())
    {
        s += v[i];
        s %= mod;
        ret.emplace_back(s);
    }
    return ret;
}

bool iskadomatsu(int a, int b, int c)
{
    return (a != b && b != c && c != a) && ((a > b && b < c) || (a < b && b > c));
}

VS split(string s, char c)
{
    VS ret;
    string part;
    s += c;
    rep(i, s.length())
    {
        if (s[i] == c)
        {
            ret.emplace_back(part);
            part = "";
        }
        else if (s[i] != c)
        {
            part += s[i];
        }
    }
    return ret;
}

string removezero(string &s)
{
    string ret;
    for (auto z : s)
        if (z != '0')
            ret += z;
    return ret;
}

ll sumdigit(ll x)
{
    ll ans{0};
    while (x > 0)
    {
        ans += x % 10;
        x /= 10;
    }
    return ans;
}

template <typename T, typename S, typename R>
ll pow_mod(T p, S q, R mod = 1ll)
{
    ll ret = 1, r = p;
    while (q)
    {
        if (q % 2)
            ret *= r, ret %= mod;
        r = (r * r) % mod, q /= 2;
    }
    return ret % mod;
}

void make_frac_tables(VL &frac_list, VL &frac_inv_list)
{
    rep(i, frac_list.size() - 1)
    {
        frac_list[i + 1] *= frac_list[i] * (i + 1);
        frac_list[i + 1] %= mod;
        frac_inv_list[i + 1] *= frac_inv_list[i] * pow_mod(i + 1, mod - 2, mod);
        frac_inv_list[i + 1] %= mod;
    }
}

ll comb(int a, int b, const VL &frac_list, const VL &frac_inv_list)
{
    if (a < b)
        return 0;
    ll ret = frac_list[a];
    ret *= frac_inv_list[b];
    ret %= mod;
    ret *= frac_inv_list[a - b];
    ret %= mod;
    return ret;
}

const double maxint = 1e9;
vector<double> shortest;
VVI connective;
vector<PII> xy_list;

double dist(int p, int q)
{
    double d, dx, dy;
    dx = xy_list[p].first - xy_list[q].first;
    dy = xy_list[p].second - xy_list[q].second;
    d = sqrt(pow(dx, 2) + pow(dy, 2));
    return d;
}

void djkstra(int s, int t)
{
    vector<int> search = {s};
    vector<int> new_search;
    fill(allpt(shortest), maxint);
    shortest[s] = 0;
    double d;
    while (!search.empty())
    {

        for (auto i : search)
        {
            for (auto j : connective[i])
            {
                d = dist(i, j);
                if (shortest[j] > d + shortest[i])
                {
                    shortest[j] = d + shortest[i];
                    new_search.emplace_back(j);
                }
            }
        }
        search.clear();
        search = new_search;
        new_search.clear();
    }

    printf("%.10f\n", shortest[t]);
}



int main()
{

    cin.tie(0);
    ios::sync_with_stdio(false);

#ifdef DEBUG
    cout << "DEBUG MODE" << endl;
    ifstream in("input.txt"); //for debug
    cin.rdbuf(in.rdbuf());    //for debug
#endif

    int n = 0, m, a, b, s, t;
    cin >> n >> m >> s >> t;

    connective.resize(n + 1);
    shortest.resize(n + 1);
    xy_list.resize(n + 1);

    rep2(i, 1, n + 1)
    {
        cin >> a >> b;
        xy_list[i] = (make_pair(a, b));
    }

    rep(i, m)
    {
        cin >> a >> b;
        connective[a].emplace_back(b);
        connective[b].emplace_back(a);
    }

    djkstra(s, t);


    return 0;
}
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