結果
問題 | No.2277 Honest or Dishonest ? |
ユーザー | t98slider |
提出日時 | 2023-04-21 21:44:49 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 35 ms / 2,000 ms |
コード長 | 4,494 bytes |
コンパイル時間 | 2,167 ms |
コンパイル使用メモリ | 176,340 KB |
実行使用メモリ | 9,088 KB |
最終ジャッジ日時 | 2024-11-08 06:27:11 |
合計ジャッジ時間 | 4,986 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 28 ms
5,504 KB |
testcase_04 | AC | 30 ms
7,296 KB |
testcase_05 | AC | 16 ms
7,936 KB |
testcase_06 | AC | 24 ms
5,248 KB |
testcase_07 | AC | 20 ms
5,248 KB |
testcase_08 | AC | 16 ms
9,088 KB |
testcase_09 | AC | 21 ms
6,784 KB |
testcase_10 | AC | 15 ms
5,248 KB |
testcase_11 | AC | 8 ms
5,248 KB |
testcase_12 | AC | 14 ms
5,248 KB |
testcase_13 | AC | 26 ms
5,248 KB |
testcase_14 | AC | 17 ms
5,248 KB |
testcase_15 | AC | 14 ms
7,040 KB |
testcase_16 | AC | 20 ms
5,248 KB |
testcase_17 | AC | 10 ms
5,248 KB |
testcase_18 | AC | 29 ms
7,296 KB |
testcase_19 | AC | 28 ms
7,168 KB |
testcase_20 | AC | 23 ms
6,016 KB |
testcase_21 | AC | 20 ms
5,248 KB |
testcase_22 | AC | 19 ms
5,632 KB |
testcase_23 | AC | 26 ms
5,248 KB |
testcase_24 | AC | 18 ms
5,760 KB |
testcase_25 | AC | 24 ms
7,808 KB |
testcase_26 | AC | 13 ms
9,088 KB |
testcase_27 | AC | 12 ms
5,248 KB |
testcase_28 | AC | 13 ms
6,656 KB |
testcase_29 | AC | 19 ms
7,424 KB |
testcase_30 | AC | 14 ms
5,248 KB |
testcase_31 | AC | 23 ms
5,248 KB |
testcase_32 | AC | 17 ms
7,296 KB |
testcase_33 | AC | 28 ms
7,040 KB |
testcase_34 | AC | 29 ms
5,888 KB |
testcase_35 | AC | 8 ms
6,528 KB |
testcase_36 | AC | 19 ms
5,248 KB |
testcase_37 | AC | 27 ms
5,248 KB |
testcase_38 | AC | 7 ms
5,248 KB |
testcase_39 | AC | 10 ms
5,248 KB |
testcase_40 | AC | 7 ms
5,632 KB |
testcase_41 | AC | 30 ms
5,888 KB |
testcase_42 | AC | 22 ms
5,376 KB |
testcase_43 | AC | 35 ms
7,808 KB |
testcase_44 | AC | 35 ms
7,936 KB |
testcase_45 | AC | 35 ms
7,808 KB |
testcase_46 | AC | 35 ms
7,808 KB |
testcase_47 | AC | 35 ms
7,808 KB |
testcase_48 | AC | 35 ms
7,808 KB |
testcase_49 | AC | 35 ms
7,808 KB |
testcase_50 | AC | 35 ms
7,808 KB |
testcase_51 | AC | 35 ms
7,936 KB |
testcase_52 | AC | 35 ms
7,808 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; struct Weighted_dsu { public: Weighted_dsu() : _n(0) {} Weighted_dsu(int n) : _n(n), parent_or_size(n, -1),diff_weight(n,0) {} bool merge(int a, int b, int w) { int x = leader(a), y = leader(b); if(x==y){ if(diff(a,b)==w)return true; return false; } w ^= diff_weight[a], w ^= diff_weight[b]; if (-parent_or_size[x] < -parent_or_size[y]) std::swap(x, y); parent_or_size[x] += parent_or_size[y]; parent_or_size[y] = x; diff_weight[y] ^= w; return true; } int diff(int x, int y) { leader(x),leader(y); return diff_weight[y] ^ diff_weight[x]; } bool same(int a, int b) { return leader(a) == leader(b); } int leader(int a) { if (parent_or_size[a] < 0) return a; int r = leader(parent_or_size[a]); diff_weight[a] ^= diff_weight[parent_or_size[a]]; return parent_or_size[a] = r; } int size(int a) { return -parent_or_size[leader(a)]; } std::vector<std::vector<int>> groups() { std::vector<int> leader_buf(_n), group_size(_n); for (int i = 0; i < _n; i++) { leader_buf[i] = leader(i); group_size[leader_buf[i]]++; } std::vector<std::vector<int>> result(_n); for (int i = 0; i < _n; i++) { result[i].reserve(group_size[i]); } for (int i = 0; i < _n; i++) { result[leader_buf[i]].push_back(i); } result.erase( std::remove_if(result.begin(), result.end(), [&](const std::vector<int>& v) { return v.empty(); }), result.end()); return result; } private: int _n; std::vector<int> parent_or_size; std::vector<int> diff_weight; }; template<const unsigned int MOD> struct prime_modint { using mint = prime_modint; unsigned int v; prime_modint() : v(0) {} prime_modint(unsigned int a) { a %= MOD; v = a; } prime_modint(unsigned long long a) { a %= MOD; v = a; } prime_modint(int a) { a %= (int)(MOD); if(a < 0)a += MOD; v = a; } prime_modint(long long a) { a %= (int)(MOD); if(a < 0)a += MOD; v = a; } static constexpr int mod() { return MOD; } mint& operator++() {v++; if(v == MOD)v = 0; return *this;} mint& operator--() {if(v == 0)v = MOD; v--; return *this;} mint operator++(int) { mint result = *this; ++*this; return result; } mint operator--(int) { mint result = *this; --*this; return result; } mint& operator+=(const mint& rhs) { v += rhs.v; if(v >= MOD) v -= MOD; return *this; } mint& operator-=(const mint& rhs) { if(v < rhs.v) v += MOD; v -= rhs.v; return *this; } mint& operator*=(const mint& rhs) { v = (unsigned int)((unsigned long long)(v) * rhs.v % MOD); return *this; } mint& operator/=(const mint& rhs) { return *this = *this * rhs.inv(); } mint operator+() const { return *this; } mint operator-() const { return mint() - *this; } mint pow(long long n) const { assert(0 <= n); mint r = 1, x = *this; while (n) { if (n & 1) r *= x; x *= x; n >>= 1; } return r; } mint inv() const { assert(v); return pow(MOD - 2); } friend mint operator+(const mint& lhs, const mint& rhs) { return mint(lhs) += rhs; } friend mint operator-(const mint& lhs, const mint& rhs) { return mint(lhs) -= rhs; } friend mint operator*(const mint& lhs, const mint& rhs) { return mint(lhs) *= rhs; } friend mint operator/(const mint& lhs, const mint& rhs) { return mint(lhs) /= rhs; } friend bool operator==(const mint& lhs, const mint& rhs) { return (lhs.v == rhs.v); } friend bool operator!=(const mint& lhs, const mint& rhs) { return (lhs.v != rhs.v); } friend std::ostream& operator << (std::ostream &os, const mint& rhs) noexcept { return os << rhs.v; } }; //using mint = prime_modint<1000000007>; using mint = prime_modint<998244353>; int main(){ ios::sync_with_stdio(false); cin.tie(0); int N, Q; cin >> N >> Q; Weighted_dsu uf(N); int u, v, c; mint ans = 1; while(Q--){ cin >> u >> v >> c; u--, v--; if(!uf.merge(u, v, c)){ ans = 0; break; } } ans *= mint(2).pow(uf.groups().size()); cout << ans << '\n'; }