結果
問題 | No.1843 Tree ANDistance |
ユーザー | kai4096_don |
提出日時 | 2022-02-18 21:44:29 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 551 ms / 2,000 ms |
コード長 | 4,021 bytes |
コンパイル時間 | 3,667 ms |
コンパイル使用メモリ | 240,076 KB |
実行使用メモリ | 30,720 KB |
最終ジャッジ日時 | 2024-06-29 08:35:27 |
合計ジャッジ時間 | 14,775 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 464 ms
30,720 KB |
testcase_01 | AC | 460 ms
30,720 KB |
testcase_02 | AC | 452 ms
30,720 KB |
testcase_03 | AC | 457 ms
30,592 KB |
testcase_04 | AC | 462 ms
30,592 KB |
testcase_05 | AC | 465 ms
30,592 KB |
testcase_06 | AC | 476 ms
30,720 KB |
testcase_07 | AC | 443 ms
29,312 KB |
testcase_08 | AC | 463 ms
30,080 KB |
testcase_09 | AC | 435 ms
29,184 KB |
testcase_10 | AC | 423 ms
28,800 KB |
testcase_11 | AC | 459 ms
30,336 KB |
testcase_12 | AC | 416 ms
28,160 KB |
testcase_13 | AC | 435 ms
28,416 KB |
testcase_14 | AC | 17 ms
5,376 KB |
testcase_15 | AC | 18 ms
5,376 KB |
testcase_16 | AC | 9 ms
5,376 KB |
testcase_17 | AC | 8 ms
5,376 KB |
testcase_18 | AC | 5 ms
5,376 KB |
testcase_19 | AC | 20 ms
5,376 KB |
testcase_20 | AC | 10 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | AC | 1 ms
5,376 KB |
testcase_24 | AC | 1 ms
5,376 KB |
testcase_25 | AC | 1 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 1 ms
5,376 KB |
testcase_28 | AC | 496 ms
24,448 KB |
testcase_29 | AC | 332 ms
17,792 KB |
testcase_30 | AC | 360 ms
18,048 KB |
testcase_31 | AC | 551 ms
26,496 KB |
testcase_32 | AC | 509 ms
25,216 KB |
testcase_33 | AC | 176 ms
10,624 KB |
testcase_34 | AC | 398 ms
20,608 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> #include <atcoder/all> using namespace std; using namespace atcoder; const long nPrime = 1000000007; //const long nPrime = 998244353; typedef long long ll; struct UnionFind { vector<int> size, parents; UnionFind() {} UnionFind(int n) { size.resize(n, 1); parents.resize(n, 0); for (int i = 0; i < n; i++) { MakeTree(i); } } void MakeTree(int x) { parents[x] = x; } bool IsSame(int x, int y) { return FindRoot(x) == FindRoot(y); } void Unite(int x, int y) { x = FindRoot(x); y = FindRoot(y); if(x==y){ return; } if (size[x] > size[y]) { parents[y] = x; size[x] += size[y]; size[y] = -1; } else { parents[x] = y; size[y] += size[x]; size[x] = -1; } } int FindRoot(int x) { if (x != parents[x]) parents[x] = FindRoot(parents[x]); return parents[x]; } int GetSize(int x){ return size[FindRoot(x)]; } }; const long long nMod = nPrime; class ModInt { long long x; public: ModInt(long long x=0) : x((x%nMod+nMod)%nMod) {} ModInt operator-() const { return ModInt(-x); } ModInt& operator+=(const ModInt& a) { if ((x += a.x) >= nMod) x -= nMod; return *this; } ModInt& operator-=(const ModInt& a) { if ((x += nMod-a.x) >= nMod) x -= nMod; return *this; } ModInt& operator*=(const ModInt& a) { (x *= a.x) %= nMod; return *this; } ModInt operator+(const ModInt& a) const { ModInt res(*this); return res+=a; } ModInt operator-(const ModInt& a) const { ModInt res(*this); return res-=a; } ModInt operator*(const ModInt& a) const { ModInt res(*this); return res*=a; } ModInt Pow(long long t) const { if (!t) return 1; ModInt a = Pow(t>>1); a *= a; if (t&1) a *= *this; return a; } // for prime nMod ModInt Inv() const { return Pow(nMod-2); } ModInt& operator/=(const ModInt& a) { return (*this) *= a.Inv(); } ModInt operator/(const ModInt& a) const { ModInt res(*this); return res/=a; } friend ostream& operator<<(ostream& os, const ModInt& m){ os << m.x; return os; } }; void MakeTable(vector<ModInt> &viInv, vector<ModInt> &viFctr, vector<ModInt> &viFctrInv, bool bUseFctr = false, const long nTableSize = 1000000){ viInv.resize(nTableSize+1, 1); for(long i = 1; i < nTableSize+1; i++){ viInv[i] /= i; } if(!bUseFctr){ return; } viFctr.resize(nTableSize+1, 1); viFctrInv.resize(nTableSize+1, 1); for(long i = 1; i < nTableSize+1; i++){ viFctr[i] = viFctr[i-1] * i; } viFctrInv[nTableSize] /= viFctr[nTableSize]; for(long i = nTableSize; i >= 1; i--){ viFctrInv[i-1] = viFctrInv[i]*i; } } int main() { long n; cin >> n; vector<pair<pair<long,long>,long>> viEdge(n-1); for(long i = 0; i < n-1; i++){ long a,b,c; cin >> a >> b >> c; a--,b--; viEdge[i] = make_pair(make_pair(a,b),c); } ModInt nAns = 0; vector<UnionFind> vzGroup(31,UnionFind(n)); for(long i = 0; i <= 30; i++){ for(long j = 0; j < n-1; j++){ long a = viEdge[j].first.first; long b = viEdge[j].first.second; long c = viEdge[j].second; if((c&(1<<i))!=0){ vzGroup[i].Unite(a,b); } } ModInt iThis = 0; for(long j = 0; j < n; j++){ if(vzGroup[i].FindRoot(j)==j){ ModInt m = vzGroup[i].GetSize(j); iThis += m*(m-1)/2; } } nAns += iThis*(1<<i); } cout << nAns << endl; return 0; }