結果
問題 | No.1420 国勢調査 (Easy) |
ユーザー | hitonanode |
提出日時 | 2021-03-06 13:42:46 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 50 ms / 2,000 ms |
コード長 | 6,121 bytes |
コンパイル時間 | 2,588 ms |
コンパイル使用メモリ | 205,728 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-08 11:21:44 |
合計ジャッジ時間 | 5,618 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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 32 ms
5,248 KB |
testcase_03 | AC | 32 ms
5,248 KB |
testcase_04 | AC | 31 ms
5,248 KB |
testcase_05 | AC | 32 ms
5,248 KB |
testcase_06 | AC | 32 ms
5,248 KB |
testcase_07 | AC | 11 ms
5,248 KB |
testcase_08 | AC | 23 ms
5,248 KB |
testcase_09 | AC | 12 ms
5,248 KB |
testcase_10 | AC | 23 ms
5,248 KB |
testcase_11 | AC | 6 ms
5,248 KB |
testcase_12 | AC | 5 ms
5,248 KB |
testcase_13 | AC | 11 ms
5,248 KB |
testcase_14 | AC | 5 ms
5,248 KB |
testcase_15 | AC | 12 ms
5,248 KB |
testcase_16 | AC | 12 ms
5,248 KB |
testcase_17 | AC | 12 ms
5,248 KB |
testcase_18 | AC | 11 ms
5,248 KB |
testcase_19 | AC | 11 ms
5,248 KB |
testcase_20 | AC | 11 ms
5,248 KB |
testcase_21 | AC | 12 ms
5,248 KB |
testcase_22 | AC | 47 ms
5,248 KB |
testcase_23 | AC | 47 ms
5,248 KB |
testcase_24 | AC | 47 ms
5,248 KB |
testcase_25 | AC | 50 ms
5,248 KB |
testcase_26 | AC | 47 ms
5,248 KB |
testcase_27 | AC | 18 ms
5,248 KB |
testcase_28 | AC | 19 ms
5,248 KB |
testcase_29 | AC | 11 ms
5,248 KB |
testcase_30 | AC | 20 ms
5,248 KB |
testcase_31 | AC | 18 ms
5,248 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using lint = long long; using pint = pair<int, int>; using plint = pair<lint, lint>; struct fast_ios { fast_ios(){ cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(20); }; } fast_ios_; #define ALL(x) (x).begin(), (x).end() #define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i<i##_end_;i++) #define IFOR(i, begin, end) for(int i=(end)-1,i##_begin_=(begin);i>=i##_begin_;i--) #define REP(i, n) FOR(i,0,n) #define IREP(i, n) IFOR(i,0,n) template <typename T, typename V> void ndarray(vector<T>& vec, const V& val, int len) { vec.assign(len, val); } template <typename T, typename V, typename... Args> void ndarray(vector<T>& vec, const V& val, int len, Args... args) { vec.resize(len), for_each(begin(vec), end(vec), [&](T& v) { ndarray(v, val, args...); }); } template <typename T> bool chmax(T &m, const T q) { if (m < q) {m = q; return true;} else return false; } template <typename T> bool chmin(T &m, const T q) { if (m > q) {m = q; return true;} else return false; } int floor_lg(long long x) { return x <= 0 ? -1 : 63 - __builtin_clzll(x); } template <typename T1, typename T2> pair<T1, T2> operator+(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first + r.first, l.second + r.second); } template <typename T1, typename T2> pair<T1, T2> operator-(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first - r.first, l.second - r.second); } template <typename T> vector<T> sort_unique(vector<T> vec) { sort(vec.begin(), vec.end()), vec.erase(unique(vec.begin(), vec.end()), vec.end()); return vec; } 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 << '['; for (auto v : vec) os << v << ','; os << ']'; return os; } template <typename T, size_t sz> ostream &operator<<(ostream &os, const array<T, sz> &arr) { os << '['; for (auto v : arr) os << v << ','; os << ']'; return os; } #if __cplusplus >= 201703L template <typename... T> istream &operator>>(istream &is, tuple<T...> &tpl) { std::apply([&is](auto &&... args) { ((is >> args), ...);}, tpl); return is; } template <typename... T> ostream &operator<<(ostream &os, const tuple<T...> &tpl) { std::apply([&os](auto &&... args) { ((os << args << ','), ...);}, tpl); return os; } #endif 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, typename TH> ostream &operator<<(ostream &os, const unordered_set<T, TH> &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, typename TH> ostream &operator<<(ostream &os, const unordered_map<TK, TV, TH> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; } #ifdef HITONANODE_LOCAL const string COLOR_RESET = "\033[0m", BRIGHT_GREEN = "\033[1;32m", BRIGHT_RED = "\033[1;31m", BRIGHT_CYAN = "\033[1;36m", NORMAL_CROSSED = "\033[0;9;37m", RED_BACKGROUND = "\033[1;41m", NORMAL_FAINT = "\033[0;2m"; #define dbg(x) cerr << BRIGHT_CYAN << #x << COLOR_RESET << " = " << (x) << NORMAL_FAINT << " (L" << __LINE__ << ") " << __FILE__ << COLOR_RESET << endl #else #define dbg(x) (x) #endif void bad() { puts("-1"); exit(0); } // UnionFind Tree (0-indexed), based on size of each disjoint set struct UnionFind { std::vector<int> par, cou; UnionFind(int N = 0) : par(N), cou(N, 1) { iota(par.begin(), par.end(), 0); } int find(int x) { return (par[x] == x) ? x : (par[x] = find(par[x])); } bool unite(int x, int y) { x = find(x), y = find(y); if (x == y) return false; if (cou[x] < cou[y]) std::swap(x, y); par[y] = x, cou[x] += cou[y]; return true; } int count(int x) { return cou[find(x)]; } bool same(int x, int y) { return find(x) == find(y); } }; // Weighted UnionFind template <typename T> struct WeightedUnionFind { std::vector<int> par, sz; std::vector<T> pot; WeightedUnionFind(int N = 0) : par(N), sz(N, 1), pot(N) { std::iota(par.begin(), par.end(), 0); } int find(int x) { if (par[x] != x) { int r = find(par[x]); pot[x] = pot[x] ^ pot[par[x]], par[x] = r; } return par[x]; } bool unite(int s, int t, T rel_diff) { // Relate s and t by t = s + rel_diff // Return false iff contradiction happens. rel_diff = rel_diff ^ weight(s) ^ weight(t); if ((s = find(s)) == (t = find(t))) return rel_diff == 0; if (sz[s] < sz[t]) std::swap(s, t); par[t] = s, sz[s] ^= sz[t], pot[t] = rel_diff; return true; } T weight(int x) { find(x); return pot[x]; } T diff(int s, int t) { return weight(t) ^ weight(s); } int count(int x) { return sz[find(x)]; } bool same(int s, int t) { return find(s) == find(t); } }; int main() { int N, M; cin >> N >> M; vector<int> ret(N); WeightedUnionFind<int> uf(N); while (M--) { int a, b, y; cin >> a >> b >> y; a--, b--; if (!uf.unite(a, b, y)) bad(); } REP(i, N) cout << uf.weight(i) << '\n'; }