結果

問題 No.1473 おでぶなおばけさん
ユーザー oteraotera
提出日時 2021-04-09 22:49:01
言語 C++17
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 106 ms / 2,000 ms
コード長 6,192 bytes
コンパイル時間 4,092 ms
コンパイル使用メモリ 216,952 KB
実行使用メモリ 13,112 KB
最終ジャッジ日時 2023-09-07 12:25:45
合計ジャッジ時間 7,914 ms
ジャッジサーバーID
(参考情報)
judge15 / judge12
このコードへのチャレンジ(β)

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
4,376 KB
testcase_01 AC 2 ms
4,376 KB
testcase_02 AC 100 ms
12,472 KB
testcase_03 AC 74 ms
11,268 KB
testcase_04 AC 51 ms
8,264 KB
testcase_05 AC 16 ms
5,048 KB
testcase_06 AC 87 ms
11,412 KB
testcase_07 AC 93 ms
13,112 KB
testcase_08 AC 106 ms
13,044 KB
testcase_09 AC 96 ms
13,012 KB
testcase_10 AC 42 ms
7,028 KB
testcase_11 AC 44 ms
7,936 KB
testcase_12 AC 43 ms
7,252 KB
testcase_13 AC 27 ms
5,784 KB
testcase_14 AC 20 ms
4,968 KB
testcase_15 AC 37 ms
6,964 KB
testcase_16 AC 40 ms
6,488 KB
testcase_17 AC 4 ms
4,380 KB
testcase_18 AC 6 ms
4,376 KB
testcase_19 AC 45 ms
7,180 KB
testcase_20 AC 64 ms
10,108 KB
testcase_21 AC 69 ms
8,888 KB
testcase_22 AC 89 ms
11,736 KB
testcase_23 AC 76 ms
10,408 KB
testcase_24 AC 70 ms
10,076 KB
testcase_25 AC 92 ms
10,884 KB
testcase_26 AC 96 ms
11,184 KB
testcase_27 AC 30 ms
5,672 KB
testcase_28 AC 96 ms
12,780 KB
testcase_29 AC 65 ms
9,020 KB
testcase_30 AC 76 ms
10,092 KB
testcase_31 AC 95 ms
12,836 KB
testcase_32 AC 70 ms
11,732 KB
testcase_33 AC 57 ms
10,112 KB
testcase_34 AC 32 ms
6,648 KB
testcase_35 AC 31 ms
6,716 KB
testcase_36 AC 60 ms
8,112 KB
testcase_37 AC 70 ms
9,880 KB
testcase_38 AC 12 ms
4,404 KB
testcase_39 AC 41 ms
6,676 KB
testcase_40 AC 40 ms
6,444 KB
testcase_41 AC 37 ms
6,484 KB
testcase_42 AC 38 ms
6,352 KB
testcase_43 AC 48 ms
10,124 KB
testcase_44 AC 48 ms
10,140 KB
testcase_45 AC 48 ms
10,020 KB
testcase_46 AC 60 ms
9,680 KB
testcase_47 AC 76 ms
10,936 KB
testcase_48 AC 68 ms
10,412 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 #

/**
 *    author:  otera
 *    created: 09.04.2021 22:38:55 
**/
#include<bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;
using ull = unsigned long long;
using uint = unsigned;
const int inf=1e9+7;
const ll INF=1LL<<60;
#define repa(i, n) for(int i = 0; i < n; ++ i)
#define repb(i, a, b) for(int i = a; i < b; ++ i)
#define repc(i, a, b, c) for(int i = a; i < b; i += c)
#define overload4(a, b, c, d, e, ...) e
#define rep(...) overload4(__VA_ARGS__, repc, repb, repa)(__VA_ARGS__)
#define rep1a(i, n) for(int i = 0; i <= n; ++ i)
#define rep1b(i, a, b) for(int i = a; i <= b; ++ i)
#define rep1c(i, a, b, c) for(int i = a; i <= b; i += c)
#define rep1(...) overload4(__VA_ARGS__, rep1c, rep1b, rep1a)(__VA_ARGS__)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define per1(i,n) for(int i=n;i>=1;i--)
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
#define pb push_back
#define eb emplace_back
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define lb(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define ub(c, x) distance((c).begin(), upper_bound(all(c), (x)))
#define Sort(a) sort(all(a))
#define Rev(a) reverse(all(a))
#define Uniq(a) sort(all(a));a.erase(unique(all(a)),end(a))
#define si(c) (int)(c).size()
inline ll popcnt(ull a){ return __builtin_popcountll(a); }
#define tpow(n) (1LL<<(n))
#define unless(A) if(!(A))
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
ll intpow(ll a, ll b, ll m) {ll ans = 1; while(b){ if(b & 1) (ans *= a) %= m; (a *= a) %= m; b /= 2; } return ans; }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
#define INT(...) int __VA_ARGS__;in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__;in(__VA_ARGS__)
#define ULL(...) ull __VA_ARGS__;in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__;in(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__;in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__;in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__;in(__VA_ARGS__)
#define vec(type,name,...) vector<type>name(__VA_ARGS__)
#define VEC(type,name,size) vector<type>name(size);in(name)
#define vv(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define VV(type,name,h,w) vector<vector<type>>name(h,vector<type>(w));in(name)
#define vvv(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))
template <class T> using vc = vector<T>;
template <class T> using vvc = vector<vc<T>>;
template <class T> using vvvc = vector<vvc<T>>;
template <class T> using vvvvc = vector<vvvc<T>>;
template <class T> using pq = priority_queue<T>;
template <class T> using pqg = priority_queue<T, vector<T>, greater<T>>;
template<class T> void scan(T& a){ cin >> a; }
template<class T> void scan(vector<T>& a){ for(auto&& i : a) scan(i); }
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){ scan(head); in(tail...); }
void print(){ cout << ' '; }
template<class T> void print(const T& a){ cout << a; }
template<class T> void print(const vector<T>& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ cout << ' '; print(*i); } }
int out(){ cout << '\n'; return 0; }
template<class T> int out(const T& t){ print(t); cout << '\n'; return 0; }
template<class Head, class... Tail> int out(const Head& head, const Tail&... tail){ print(head); cout << ' '; out(tail...); return 0; }
#define CHOOSE(a) CHOOSE2 a
#define CHOOSE2(a0,a1,a2,a3,a4,x,...) x
#define debug_1(x1) cout<<#x1<<": "<<x1<<endl
#define debug_2(x1,x2) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<endl
#define debug_3(x1,x2,x3) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<endl
#define debug_4(x1,x2,x3,x4) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<endl
#define debug_5(x1,x2,x3,x4,x5) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<", "#x5<<": "<<x5<<endl
#ifdef DEBUG
#define debug(...) CHOOSE((__VA_ARGS__,debug_5,debug_4,debug_3,debug_2,debug_1,~))(__VA_ARGS__)
#define dump(...) { print(#__VA_ARGS__); print(":"); out(__VA_ARGS__); }
#else
#define debug(...)
#define dump(...)
#endif

#define int long long

struct UnionFind {
    vector<int> par, w;
    
    UnionFind(int n) : par(n, -1), w(n, 0) { }
    void init(int n) { par.assign(n, -1); w.assign(n, 0); }
    
    int root(int x) {
        if (par[x] < 0) return x;
        else return par[x] = root(par[x]);
    }
    
    bool issame(int x, int y) {
        return root(x) == root(y);
    }
    
    bool merge(int x, int y) {
        x = root(x); y = root(y);
        if (x == y) {
            ++w[x];
            return false;
        }
        if (par[x] > par[y]) swap(x, y); // merge technique
        par[x] += par[y];
        par[y] = x;
        w[x] += w[y];
        ++w[x];
        return true;
    }
    
    int size(int x) {
        return -par[root(x)];
    }
 
    int wei(int x) {
        return w[root(x)];
    }
};

typedef pair<int, P> P2;

void solve() {
    INT(n, m);
    vc<P2> es(m);
    vvc<P> g(n);
    rep(i, m) {
        INT(s, t, d);
        -- s, -- t;
        es[i] = P2{d, P{s, t}};
        g[s].eb(t, d);
        g[t].eb(s, d);
    }
    Sort(es); Rev(es);
    UnionFind uf(n);
    int w = inf;
    rep(i, m) {
        int s = es[i].sc.fr, t = es[i].sc.sc, d = es[i].fr;
        uf.merge(s, t);
        if(uf.issame(0, n - 1)) {
            w = d;
            break;
        }
    } 
    pqg<P> pque;
    pque.push({0, 0});
    vc<int> di(n, inf); di[0] = 0;
    while(pque.size()) {
        auto p = pque.top(); pque.pop();
        int v = p.sc, d = p.fr;
        if(d > di[v]) continue;
        for(auto e: g[v]) {
            if(e.sc >= w) {
                if(chmin(di[e.fr], d + 1)) {
                    pque.push({d + 1, e.fr});
                }
            }
        }
    }
    out(w, di[n - 1]);
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    // cout << fixed << setprecision(20);
    // INT(t); rep(i, t)solve();
    solve();
    return 0;
}
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