結果

問題 No.1607 Kth Maximum Card
ユーザー yuto1115yuto1115
提出日時 2021-07-16 22:30:25
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 2,082 ms / 3,500 ms
コード長 5,804 bytes
コンパイル時間 2,916 ms
コンパイル使用メモリ 220,184 KB
実行使用メモリ 32,292 KB
最終ジャッジ日時 2023-09-20 14:47:45
合計ジャッジ時間 25,709 ms
ジャッジサーバーID
（参考情報） 		judge15 / judge14
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
4,500 KB
testcase_01 AC 1 ms
4,376 KB
testcase_02 AC 2 ms
4,376 KB
testcase_03 AC 1 ms
4,376 KB
testcase_04 AC 2 ms
4,376 KB
testcase_05 AC 1 ms
4,376 KB
testcase_06 AC 2 ms
4,380 KB
testcase_07 AC 2 ms
4,376 KB
testcase_08 AC 2,082 ms
32,292 KB
testcase_09 AC 1,479 ms
26,876 KB
testcase_10 AC 1,878 ms
32,232 KB
testcase_11 AC 295 ms
9,860 KB
testcase_12 AC 1,407 ms
25,700 KB
testcase_13 AC 135 ms
7,316 KB
testcase_14 AC 169 ms
9,060 KB
testcase_15 AC 1,194 ms
25,436 KB
testcase_16 AC 127 ms
7,784 KB
testcase_17 AC 40 ms
4,696 KB
testcase_18 AC 632 ms
18,344 KB
testcase_19 AC 349 ms
12,780 KB
testcase_20 AC 560 ms
15,232 KB
testcase_21 AC 589 ms
16,508 KB
testcase_22 AC 1,520 ms
29,488 KB
testcase_23 AC 1,509 ms
29,532 KB
testcase_24 AC 387 ms
11,596 KB
testcase_25 AC 184 ms
8,756 KB
testcase_26 AC 247 ms
9,432 KB
testcase_27 AC 363 ms
12,360 KB
testcase_28 AC 262 ms
10,488 KB
testcase_29 AC 797 ms
18,872 KB
testcase_30 AC 1,713 ms
30,360 KB
testcase_31 AC 805 ms
17,300 KB
testcase_32 AC 211 ms
17,492 KB
testcase_33 AC 213 ms
17,640 KB
testcase_34 AC 211 ms
17,580 KB
testcase_35 AC 207 ms
17,740 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>
#define overload4(_1, _2, _3, _4, name, ...) name
#define rep1(i, n) for (ll i = 0; i < ll(n); ++i)
#define rep2(i, s, n) for (ll i = ll(s); i < ll(n); ++i)
#define rep3(i, s, n, d) for(ll i = ll(s); i < ll(n); i+=d)
#define rep(...) overload4(__VA_ARGS__,rep3,rep2,rep1)(__VA_ARGS__)
#define rrep1(i, n) for (ll i = ll(n)-1; i >= 0; i--)
#define rrep2(i, n, t) for (ll i = ll(n)-1; i >= (ll)t; i--)
#define rrep3(i, n, t, d) for (ll i = ll(n)-1; i >= (ll)t; i-=d)
#define rrep(...) overload4(__VA_ARGS__,rrep3,rrep2,rrep1)(__VA_ARGS__)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define SUM(a) accumulate(all(a),0LL)
#define MIN(a) *min_element(all(a))
#define MAX(a) *max_element(all(a))
#define popcount(x) __builtin_popcountll(x)
#define pb push_back
#define eb emplace_back
#ifdef __LOCAL
#define debug(...) { cout << #__VA_ARGS__; cout << ": "; print(__VA_ARGS__); cout << flush; }
#else
#define debug(...) void(0)
#endif
#define INT(...) int __VA_ARGS__;scan(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__;scan(__VA_ARGS__)
#define STR(...) string __VA_ARGS__;scan(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__;scan(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__;scan(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__;scan(__VA_ARGS__)
using namespace std;
using ll = long long;
using ld = long double;
using P = pair<int, int>;
using LP = pair<ll, ll>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vd = vector<double>;
using vvd = vector<vd>;
using vs = vector<string>;
using vc = vector<char>;
using vvc = vector<vc>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vp = vector<P>;
using vvp = vector<vp>;

template<class S, class T>
istream &operator>>(istream &is, pair<S, T> &p) { return is >> p.first >> p.second; }

template<class S, class T>
ostream &operator<<(ostream &os, const pair<S, T> &p) { return os << '{' << p.first << ", " << p.second << '}'; }

template<class S, class T, class U>
istream &operator>>(istream &is, tuple<S, T, U> &t) { return is >> get<0>(t) >> get<1>(t) >> get<2>(t); }

template<class S, class T, class U>
ostream &operator<<(ostream &os, const tuple<S, T, U> &t) {
    return os << '{' << get<0>(t) << ", " << get<1>(t) << ", " << get<2>(t) << '}';
}

template<class T>
istream &operator>>(istream &is, vector<T> &v) {
    for (T &t:v) { is >> t; }
    return is;
}

template<class T>
ostream &operator<<(ostream &os, const vector<T> &v) {
    os << '[';
    rep(i, v.size())os << v[i] << (i == int(v.size() - 1) ? "" : ", ");
    return os << ']';
}

template<class T>
void vecout(const vector<T> &v, char div = '\n') {
    rep(i, v.size()) cout << v[i] << (i == int(v.size() - 1) ? '\n' : div);
}

template<class T>
bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

void scan() {}

template<class Head, class... Tail>
void scan(Head &head, Tail &... tail) {
    cin >> head;
    scan(tail...);
}

template<class T>
void print(const T &t) { cout << t << '\n'; }

template<class Head, class... Tail>
void print(const Head &head, const Tail &... tail) {
    cout << head << ' ';
    print(tail...);
}

template<class... T>
void fin(const T &... a) {
    print(a...);
    exit(0);
}

struct Init_io {
    Init_io() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
        cout.tie(nullptr);
        cout << boolalpha << fixed << setprecision(15);
        cerr << boolalpha << fixed << setprecision(15);
    }
} init_io;

const string yes[] = {"no", "yes"};
const string Yes[] = {"No", "Yes"};
const string YES[] = {"NO", "YES"};
const int inf = 1001001001;
const ll linf = 1001001001001001001;

template<class T, class S>
vector<T> cumsum(const vector<S> &v, bool shift_one = true) {
    int n = v.size();
    vector<T> res;
    if (shift_one) {
        res.resize(n + 1);
        rep(i, n) res[i + 1] = res[i] + v[i];
    } else {
        res.resize(n);
        if (n) {
            res[0] = v[0];
            rep(i, 1, n) res[i] = res[i - 1] + v[i];
        }
    }
    return res;
}

vvi graph(int n, int m, bool directed = false, int origin = 1) {
    vvi G(n);
    rep(_, m) {
        INT(u, v);
        u -= origin, v -= origin;
        G[u].pb(v);
        if (!directed) G[v].pb(u);
    }
    return G;
}

template<class T>
vector<vector<pair<int, T>>> weighted_graph(int n, int m, bool directed = false, int origin = 1) {
    vector<vector<pair<int, T>>> G(n);
    rep(_, m) {
        int u, v;
        T w;
        scan(u, v, w);
        u -= origin, v -= origin;
        G[u].eb(v, w);
        if (!directed) G[v].eb(u, w);
    }
    return G;
}

// (to, len)
using vve = vector<vector<pair<int, ll>>>;

vl dijkstra(int start, const vve &G) {
    int n = G.size();
    vl dist(n, linf);
    priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> q;
    q.emplace(0LL, start);
    dist[start] = 0;
    while (!q.empty()) {
        auto[d, u] = q.top();
        q.pop();
        if (dist[u] < d) continue;
        for (auto[v, len] : G[u]) {
            if (chmin(dist[v], d + len)) {
                q.emplace(d + len, v);
            }
        }
    }
    return dist;
}

int main() {
    INT(n, m, k);
    vvp G = weighted_graph<int>(n, m);
    int ok = 200010, ng = -1;
    auto f = [&](int x) -> bool {
        vve g(n);
        rep(i, n) {
            for (auto[j, c] : G[i]) {
                g[i].eb(j, c > x);
            }
        }
        return dijkstra(0, g).back() < k;
    };
    while (abs(ok - ng) > 1) {
        int mid = (ng + ok) / 2;
        if (f(mid)) ok = mid;
        else ng = mid;
    }
    print(ok);
}
0