結果
問題 | No.470 Inverse S+T Problem |
ユーザー | tokusakurai |
提出日時 | 2020-08-30 10:26:50 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 84 ms / 2,000 ms |
コード長 | 3,299 bytes |
コンパイル時間 | 2,463 ms |
コンパイル使用メモリ | 226,968 KB |
実行使用メモリ | 9,344 KB |
最終ジャッジ日時 | 2024-06-01 23:03:15 |
合計ジャッジ時間 | 3,848 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 84 ms
9,344 KB |
testcase_07 | AC | 80 ms
9,188 KB |
testcase_08 | AC | 84 ms
9,344 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 1 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 2 ms
6,944 KB |
testcase_15 | AC | 2 ms
6,940 KB |
testcase_16 | AC | 2 ms
6,940 KB |
testcase_17 | AC | 2 ms
6,940 KB |
testcase_18 | AC | 2 ms
6,944 KB |
testcase_19 | AC | 2 ms
6,948 KB |
testcase_20 | AC | 2 ms
6,940 KB |
testcase_21 | AC | 2 ms
6,940 KB |
testcase_22 | AC | 2 ms
6,944 KB |
testcase_23 | AC | 2 ms
6,944 KB |
testcase_24 | AC | 1 ms
6,940 KB |
testcase_25 | AC | 2 ms
6,940 KB |
testcase_26 | AC | 2 ms
6,944 KB |
testcase_27 | AC | 2 ms
6,944 KB |
testcase_28 | AC | 14 ms
6,940 KB |
testcase_29 | AC | 3 ms
6,940 KB |
testcase_30 | AC | 9 ms
6,944 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for(int i = 0; i < n; i++) #define rep2(i, x, n) for(int i = x; i <= n; i++) #define rep3(i, x, n) for(int i = x; i >= n; i--) #define elif else if #define sp(x) fixed << setprecision(x) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; const ll MOD = 1000000007; //const ll MOD = 998244353; const int inf = (1<<30)-1; const ll INF = (1LL<<60)-1; const double pi = acos(-1.0); const double EPS = 1e-10; template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;}; template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;}; struct Graph{ vector<vector<int>> es; const int n; Graph(int n) : n(n){ es.resize(n); } void add_edge(int from, int to, bool directed = false){ es[from].pb(to); if(!directed) es[to].pb(from); } }; struct Strongly_Connected_Components{ vector<vector<int>> es, rs; vector<int> vs, comp; vector<bool> used; const int n; Strongly_Connected_Components(int n) : n(n){ es.resize(n), rs.resize(n); vs.resize(n), comp.resize(n), used.resize(n); } void add_edge(int from, int to, bool directed = false){ es[from].pb(to), rs[to].pb(from); if(!directed) es[to].pb(from), rs[from].pb(to); } void dfs(int now){ used[now] = true; for(auto &e: es[now]) if(!used[e]) dfs(e); vs.pb(now); } void rdfs(int now, int cnt){ used[now] = true, comp[now] = cnt; for(auto &e: rs[now]) if(!used[e]) rdfs(e, cnt); } Graph decompose(){ fill(all(used), false); rep(i, n) if(!used[i]) dfs(i); fill(all(used), false), reverse(all(vs)); int cnt = 0; for(auto &e: vs) if(!used[e]) rdfs(e, cnt++); Graph G(cnt); rep(i, n){ for(auto &e: es[i]){ int u = comp[i], v = comp[e]; if(u != v) G.add_edge(u, v, true); } } return G; } int operator [] (int k) const{ return comp[k]; } }; int main(){ int N; cin >> N; map<string, vector<int>> mp; string S[N]; rep(i, N){ cin >> S[i]; mp[S[i].substr(0, 2)].pb(i), mp[S[i].substr(2, 1)].pb(i); mp[S[i].substr(0, 1)].pb(N+i), mp[S[i].substr(1, 2)].pb(N+i); } if(N > 52) {cout << "Impossible" << endl; return 0;} Strongly_Connected_Components G(2*N); for(auto &e: mp){ int n = sz(e.second); rep(i, n){ rep(j, n){ if(i == j) continue; int p = e.second[i], q = e.second[j]; G.add_edge(p, (N+q)%(2*N), true); } } } G.decompose(); int l[N]; rep(i, N){ if(G[i] == G[N+i]) {cout << "Impossible" << endl; return 0;} if(G[i] > G[N+i]) l[i] = 1; else l[i] = 0; } rep(i, N){ if(l[i]) cout << S[i].substr(0, 2) << ' ' << S[i].substr(2, 1) << endl; else cout << S[i].substr(0, 1) << ' ' << S[i].substr(1, 2) << endl; } }