結果
問題 | No.1207 グラフX |
ユーザー | uchiiii |
提出日時 | 2020-08-30 17:35:35 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 258 ms / 2,000 ms |
コード長 | 5,645 bytes |
コンパイル時間 | 3,511 ms |
コンパイル使用メモリ | 226,868 KB |
実行使用メモリ | 51,072 KB |
最終ジャッジ日時 | 2024-11-15 14:04:07 |
合計ジャッジ時間 | 13,384 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 182 ms
18,912 KB |
testcase_01 | AC | 191 ms
18,916 KB |
testcase_02 | AC | 184 ms
18,912 KB |
testcase_03 | AC | 184 ms
19,052 KB |
testcase_04 | AC | 180 ms
18,912 KB |
testcase_05 | AC | 253 ms
51,072 KB |
testcase_06 | AC | 254 ms
51,072 KB |
testcase_07 | AC | 258 ms
51,072 KB |
testcase_08 | AC | 145 ms
14,568 KB |
testcase_09 | AC | 154 ms
17,120 KB |
testcase_10 | AC | 243 ms
36,864 KB |
testcase_11 | AC | 257 ms
51,072 KB |
testcase_12 | AC | 146 ms
15,188 KB |
testcase_13 | AC | 71 ms
10,112 KB |
testcase_14 | AC | 174 ms
18,400 KB |
testcase_15 | AC | 164 ms
15,908 KB |
testcase_16 | AC | 73 ms
10,368 KB |
testcase_17 | AC | 118 ms
14,000 KB |
testcase_18 | AC | 95 ms
14,060 KB |
testcase_19 | AC | 109 ms
11,924 KB |
testcase_20 | AC | 178 ms
18,676 KB |
testcase_21 | AC | 15 ms
8,144 KB |
testcase_22 | AC | 116 ms
14,140 KB |
testcase_23 | AC | 128 ms
15,164 KB |
testcase_24 | AC | 88 ms
13,448 KB |
testcase_25 | AC | 180 ms
18,548 KB |
testcase_26 | AC | 133 ms
15,732 KB |
testcase_27 | AC | 161 ms
17,296 KB |
testcase_28 | AC | 149 ms
17,176 KB |
testcase_29 | AC | 154 ms
17,200 KB |
testcase_30 | AC | 75 ms
11,660 KB |
testcase_31 | AC | 59 ms
9,420 KB |
testcase_32 | AC | 63 ms
11,912 KB |
testcase_33 | AC | 67 ms
11,688 KB |
testcase_34 | AC | 146 ms
15,920 KB |
testcase_35 | AC | 16 ms
8,192 KB |
testcase_36 | AC | 144 ms
16,952 KB |
testcase_37 | AC | 119 ms
14,524 KB |
testcase_38 | AC | 33 ms
9,728 KB |
testcase_39 | AC | 71 ms
12,556 KB |
testcase_40 | AC | 45 ms
8,320 KB |
testcase_41 | AC | 106 ms
12,176 KB |
testcase_42 | AC | 5 ms
8,084 KB |
testcase_43 | AC | 6 ms
8,064 KB |
testcase_44 | AC | 6 ms
8,192 KB |
testcase_45 | AC | 185 ms
18,904 KB |
testcase_46 | AC | 168 ms
18,904 KB |
testcase_47 | AC | 166 ms
18,776 KB |
testcase_48 | AC | 169 ms
18,908 KB |
ソースコード
#pragma GCC target("avx2") #pragma GCC optimize("03") #pragma GCC optimize("unroll-loops") #include <bits/stdc++.h> using namespace std; typedef long double ld; typedef long long ll; typedef unsigned long long ull; #define endl "\n" #define FOR(i,a,b) for(int i=(a);i<=(b);i++) #define rep(i,n) for(int i=0;i<(n);i++) #define PII pair<int, int> #define PLL pair<ll, ll> #define ALL(x) (x).begin(), (x).end() constexpr int INF=1<<30; constexpr ll LINF=1LL<<60; constexpr ll mod=1e9+7; constexpr int NIL = -1; template<class T>vector<T> vec(int len, T elem) { return vector<T>(len, elem); } // auto dp = vec(52, vec(103, vec(103, INF))); template<class T>inline bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; } template<class T>inline bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; } template<class T>inline int popcount(T a) {return __builtin_popcount(a);} template<class T>inline T emod(T a, T p) { return (a%p + p) % p;} template <typename T> istream &operator>>(istream &is, vector<T> &vec) { for (auto &v : vec) is >> v; return is; } template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) {os << '\n'; for (auto v : vec) os << v << ' '; os << '\n'; return os;} template <typename T> ostream &operator<<(ostream &os, const deque<T> &vec) { os << "deq["; for (auto v : vec) os << v << ','; os << ']'; return os; } template <typename T> ostream &operator<<(ostream &os, const set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const unordered_set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa) { os << '(' << pa.first << ',' << pa.second << ')'; return os; } template <typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; } template <typename TK, typename TV> ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; } //------------------- struct mint { ll x; mint(ll x=0):x(x%mod){} bool operator==(const mint a)const{return x==a.x;} bool operator!=(const mint a)const{return x!=a.x;} bool operator>=(const mint a){return (x >= a.x)? 1: 0;} bool operator<(const mint a){return !(*this>=a);} bool operator>(const mint a){return (x > a.x)? 1:0;} bool operator<=(const mint a){return !(*this>a);} mint& operator+=(const mint a) { if ((x += a.x) >= mod) x -= mod; return *this; } mint& operator-=(const mint a) { if ((x += mod-a.x) >= mod) x -= mod; return *this; } mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this; } mint& operator/=(const mint a) { return (*this) *= a.inv(); } mint operator+(const mint a) const { mint res(*this); return res+=a; } mint operator-(const mint a) const { mint res(*this); return res-=a; } mint operator*(const mint a) const { mint res(*this); return res*=a; } mint operator/(const mint a) const { mint res(*this); return res/=a; } mint pow(ll t) const { if (!t) return 1; mint a = pow(t>>1); a *= a; //2 square if (t&1) a *= *this; return a; } // for prime mod mint inv() const { return pow(mod-2); } friend ostream& operator<<(ostream& os, const mint& m){ os << m.x; return os; } }; class UnionFind { private: unsigned size_; std::vector<int> par, rank; //par = root? -size: par public: UnionFind() : size_(0), par(std::vector<int>()), rank(std::vector<int>()) {}; UnionFind(unsigned size__) : size_(size__) { par.resize(size_+1); rank.resize(size_+1); for (unsigned i = 0; i <= size_; i++) par[i] = -1, rank[i] = 0; } //unsigned size() { return size_; } unsigned root(unsigned x) {return par[x] < 0 ? x : par[x] = root(par[x]); } bool same(unsigned x, unsigned y) { return root(x) == root(y); } void unite(unsigned x, unsigned y) { x = root(x), y = root(y); if (x == y) return; if (rank[x] < rank[y])par[y] += par[x], par[x] = y; else if (rank[x] == rank[y])par[x] += par[y], par[y] = x, rank[x]++; else par[x] += par[y], par[y] = x; } int size(int x){ return -par[root(x)];} bool operator==(const UnionFind &u) { return par == u.par; } bool operator!=(const UnionFind &u) { return par != u.par; } }; constexpr int MX = 2e5+5; vector<PLL> G[MX]; mint ans = 0; ll n,m,x; ll dfs(int c, int par) { ll res=0; for(auto [to, cost]: G[c]) { if(to==par) continue; ll cur = dfs(to, c); ans += mint(x).pow(cost) * (n - cur) * cur; // cout << cur << endl; res += cur; } return res+1; } int main() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(15); cin >> n >> m >> x; UnionFind uf(n); rep(i, m) { int x1,y1; cin >> x1 >> y1; x1--; y1--; ll z; cin >> z; if(!uf.same(x1,y1)) { uf.unite(x1,y1); G[x1].emplace_back(y1, z); G[y1].emplace_back(x1, z); } } // rep(i, n) { // cout << G[i] << endl; // } dfs(0, -1); cout << ans << endl; return 0; }