#838145 (C++14) No.2200 Weird Shortest Path

• 問題: No.2200 Weird Shortest Path
• ユーザー: warabi0906
• 提出日時: 2023-02-08 19:44:04
• 言語: C++14 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 189 ms / 2,000 ms
• コード長: 1,614 bytes
• コンパイル時間: 3,302 ms
• コンパイル使用メモリ: 236,532 KB
• 実行使用メモリ: 8,404 KB
• 最終ジャッジ日時: 2024-07-06 05:50:34
• 合計ジャッジ時間: 9,264 ms
• ジャッジサーバーID （参考情報）: judge5 / judge4

ファイルパターン	結果
sample	AC * 2
other	AC * 44

ソースコード

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#include <bits/stdc++.h>
#include "atcoder/all"
#define debug cout << "OK" << endl;
template<typename T>
inline bool chmax(T& a, const T b) { if (a < b) { a = b; return true; } return false; }
template<typename T>
inline bool chmin(T& a, const T b) { if (a > b) { a = b; return true; } return false; }
inline int Code(char c) {
    if ('A' <= c and c <= 'Z')return (int)(c - 'A');
    if ('a' <= c and c <= 'z')return (int)(c - 'a');
    if ('0' <= c and c <= '9')return (int)(c - '0');
    assert(false);
}
using namespace std;
using namespace atcoder;
#define int long long
constexpr int MOD = 998244353;
constexpr int INF = (1LL << 63);
using minit = modint998244353;
template<typename T>
ostream& operator << (ostream& st, const vector<T>& v) {
    for (const T value : v) {
        st << value << " ";
    }
    return st;
}
template<typename T>
istream& operator >> (istream& st, vector<T>& v) {
    for (T& value : v) {
        st >> value;
    }
    return st;
}
//
//
void solve() {
    int N, M;
    cin >> N >> M;
    vector<pair<int, pair<int, int>>> E(M);
    for (int e = 0; e < M; e++) {
        int u, v, w;
        cin >> u >> v >> w;
        u--; v--;
        E[e] = { w,{u,v} };
    }
    sort(E.begin(), E.end());
    dsu d(N);
    int ans = 0;
    for (int i = 0; i < M; i++) {
        if (d.same(E[i].second.first, E[i].second.second))continue;
        ans += (int)d.size(E[i].second.first) * (int)d.size(E[i].second.second) * E[i].first;
        d.merge(E[i].second.first, E[i].second.second);
    }
    cout << ans << endl;
}
signed main() {
    int T = 1;
    // cin >> T;
    for (int i = 0; i < T; i++)
        solve();
    return 0;
}
/*
* わらびのコードこーどすぺーす
 (σ･∀･)σｹﾞｯﾂ!!
*/
 
 
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