結果
問題 | No.1207 グラフX |
ユーザー | homesentinel |
提出日時 | 2020-08-30 14:29:53 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 212 ms / 2,000 ms |
コード長 | 5,932 bytes |
コンパイル時間 | 1,457 ms |
コンパイル使用メモリ | 134,248 KB |
実行使用メモリ | 38,584 KB |
最終ジャッジ日時 | 2024-11-15 07:39:37 |
合計ジャッジ時間 | 9,743 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 159 ms
26,564 KB |
testcase_01 | AC | 162 ms
26,684 KB |
testcase_02 | AC | 150 ms
26,544 KB |
testcase_03 | AC | 159 ms
26,680 KB |
testcase_04 | AC | 162 ms
26,680 KB |
testcase_05 | AC | 201 ms
38,336 KB |
testcase_06 | AC | 212 ms
38,456 KB |
testcase_07 | AC | 203 ms
38,452 KB |
testcase_08 | AC | 118 ms
18,952 KB |
testcase_09 | AC | 133 ms
23,584 KB |
testcase_10 | AC | 202 ms
32,692 KB |
testcase_11 | AC | 205 ms
38,584 KB |
testcase_12 | AC | 123 ms
22,644 KB |
testcase_13 | AC | 64 ms
9,996 KB |
testcase_14 | AC | 149 ms
25,912 KB |
testcase_15 | AC | 132 ms
23,364 KB |
testcase_16 | AC | 64 ms
10,736 KB |
testcase_17 | AC | 99 ms
17,160 KB |
testcase_18 | AC | 85 ms
16,408 KB |
testcase_19 | AC | 96 ms
15,472 KB |
testcase_20 | AC | 158 ms
26,348 KB |
testcase_21 | AC | 12 ms
5,248 KB |
testcase_22 | AC | 96 ms
17,064 KB |
testcase_23 | AC | 107 ms
22,060 KB |
testcase_24 | AC | 73 ms
15,052 KB |
testcase_25 | AC | 146 ms
26,004 KB |
testcase_26 | AC | 113 ms
22,724 KB |
testcase_27 | AC | 139 ms
24,476 KB |
testcase_28 | AC | 129 ms
23,828 KB |
testcase_29 | AC | 132 ms
24,048 KB |
testcase_30 | AC | 63 ms
13,412 KB |
testcase_31 | AC | 53 ms
8,832 KB |
testcase_32 | AC | 52 ms
13,124 KB |
testcase_33 | AC | 59 ms
13,416 KB |
testcase_34 | AC | 120 ms
23,240 KB |
testcase_35 | AC | 12 ms
5,248 KB |
testcase_36 | AC | 122 ms
23,412 KB |
testcase_37 | AC | 101 ms
18,184 KB |
testcase_38 | AC | 28 ms
7,000 KB |
testcase_39 | AC | 60 ms
13,572 KB |
testcase_40 | AC | 42 ms
7,040 KB |
testcase_41 | AC | 83 ms
14,904 KB |
testcase_42 | AC | 2 ms
5,248 KB |
testcase_43 | AC | 2 ms
5,248 KB |
testcase_44 | AC | 2 ms
5,248 KB |
testcase_45 | AC | 142 ms
26,688 KB |
testcase_46 | AC | 141 ms
26,680 KB |
testcase_47 | AC | 143 ms
26,816 KB |
testcase_48 | AC | 142 ms
26,684 KB |
ソースコード
#include <algorithm> #include <bitset> #include <complex> #include <deque> #include <exception> #include <fstream> #include <functional> #include <iomanip> #include <ios> #include <iosfwd> #include <iostream> #include <istream> #include <iterator> #include <limits> #include <list> #include <locale> #include <map> #include <memory> #include <new> #include <numeric> #include <ostream> #include <queue> #include <set> #include <sstream> #include <stack> #include <stdexcept> #include <streambuf> #include <string> #include <typeinfo> #include <utility> #include <valarray> #include <vector> #include <climits> #include <cstring> #include <cassert> using namespace std; #define SZ(x) (int)(x.size()) #define REP(i, n) for(int i=0;i<n;++i) #define FOR(i, a, b) for(int i=a;i<b;++i) #define RREP(i, n) for(int i=n-1;i>=0;--i) #define RFOR(i, a, b) for(int i=b-1;i>=a;--i) #define all(x) begin(x),end(x) #define dump(x) cerr<<#x<<" = "<<(x)<<endl #define debug(x) cerr<<#x<<" = "<<(x)<<" (L"<<__LINE__<<")"<< endl; using ll = long long; using vi = vector<int>; using vvi = vector<vi>; using vll = vector<ll>; using vvll = vector<vll>; using P = pair<int, int>; const double eps = 1e-8; const ll MOD = 1000000007; const int INF = INT_MAX / 2; const ll LINF = LLONG_MAX / 2; template<class T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return true; } return false; } template<class T> bool chmin(T &a, const T &b) { if (b < a) { a = b; return true; } return false; } template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> p) { os << p.first << ":" << p.second; return os; } template<class T> ostream &operator<<(ostream &os, const vector<T> &v) { os << "["; REP(i, SZ(v)) { if (i) os << ", "; os << v[i]; } return os << "]"; } template<class T1, class T2> ostream &operator<<(ostream &os, const map<T1, T2> &mp) { os << "["; for (auto it = mp.begin(); it != mp.end(); ++it) { if (it != mp.begin()) { os << ", "; } os << *it; } return os << "]"; } // edit using Int = ll; class Mint { using u64 = std::uint_fast64_t; u64 Modulus = MOD; public: u64 a; constexpr Mint(const u64 x = 0) noexcept: a(x % Modulus) {} constexpr u64 &value() noexcept { return a; } constexpr const u64 &value() const noexcept { return a; } constexpr Mint operator+(const Mint rhs) const noexcept { return Mint(*this) += rhs; } constexpr Mint operator-(const Mint rhs) const noexcept { return Mint(*this) -= rhs; } constexpr Mint operator*(const Mint rhs) const noexcept { return Mint(*this) *= rhs; } constexpr Mint operator/(const Mint rhs) const noexcept { return Mint(*this) /= rhs; } constexpr Mint &operator+=(const Mint rhs) noexcept { a += rhs.a; if (a >= Modulus) { a -= Modulus; } return *this; } constexpr Mint &operator-=(const Mint rhs) noexcept { if (a < rhs.a) { a += Modulus; } a -= rhs.a; return *this; } constexpr Mint &operator*=(const Mint rhs) noexcept { a = a * rhs.a % Modulus; return *this; } constexpr Mint &operator/=(Mint rhs) noexcept { u64 exp = Modulus - 2; while (exp) { if (exp % 2) { *this *= rhs; } rhs *= rhs; exp /= 2; } return *this; } constexpr Mint &pow(int rhs) noexcept { u64 exp = static_cast<u64>(rhs); Mint base(a); a = 1; while (exp) { if (exp % 2) { *this *= base; } base *= base; exp /= 2; } return *this; } }; struct UnionFind { vector<int> par, sz; UnionFind(int n) : par(n), sz(n, 1) { for (int i = 0; i < n; ++i) par[i] = i; } int root(int x) { if (par[x] == x) return x; return par[x] = root(par[x]); } void merge(int x, int y) { x = root(x); y = root(y); if (x == y) return; if (sz[x] < sz[y]) swap(x, y); par[y] = x; sz[x] += sz[y]; sz[y] = 0; } bool issame(int x, int y) { return root(x) == root(y); } int size(int x) { return sz[root(x)]; } }; vector<vector<int>> tree; vector<int> nodes; int dfs(int v, int p = -1) { int ret = 1; for (auto e : tree[v]) { if (e != p) { ret += dfs(e, v); } } nodes[v] = ret; return ret; } void solve() { int N, M; ll X; cin >> N >> M >> X; tree.resize(N); nodes.resize(N); vector<tuple<ll, ll, ll>> tapi(M); REP(i, M) { ll x, y, z; cin >> x >> y >> z; x--, y--; tapi[i] = tie(x, y, z); } sort(all(tapi), [](auto l, auto r) { return get<2>(l) < get<2>(r); }); UnionFind uf(N); vector<tuple<ll, ll, ll>> edges; for (int i = 0; i < M; ++i) { ll x, y, z; tie(x, y, z) = tapi[i]; if (!uf.issame(x, y)) { uf.merge(x, y); tree[x].push_back(y); tree[y].push_back(x); edges.push_back(tuple<ll, ll, ll>(x, y, z)); } } dfs(0); Mint ans = 0; for (auto edge : edges) { ll x, y, z; tie(x, y, z) = edge; if (nodes[x] < nodes[y]) swap(x, y); ll sz1 = N - nodes[y]; ll sz2 = nodes[y]; Mint cost = Mint(X).pow(z) * sz1 * sz2; ans += cost; } cout << ans.value() << endl; } int main() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(10); // std::ifstream in("input.txt"); // std::cin.rdbuf(in.rdbuf()); solve(); return 0; }