結果
問題 | No.1153 ねこちゃんゲーム |
ユーザー | yuto1115 |
提出日時 | 2020-08-07 23:13:04 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 403 ms / 2,500 ms |
コード長 | 3,999 bytes |
コンパイル時間 | 2,455 ms |
コンパイル使用メモリ | 211,252 KB |
実行使用メモリ | 79,592 KB |
最終ジャッジ日時 | 2024-09-24 23:57:30 |
合計ジャッジ時間 | 22,957 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 3 ms
6,940 KB |
testcase_03 | AC | 4 ms
6,940 KB |
testcase_04 | AC | 3 ms
6,940 KB |
testcase_05 | AC | 3 ms
6,944 KB |
testcase_06 | AC | 3 ms
6,944 KB |
testcase_07 | AC | 296 ms
48,692 KB |
testcase_08 | AC | 313 ms
48,640 KB |
testcase_09 | AC | 294 ms
48,608 KB |
testcase_10 | AC | 292 ms
48,640 KB |
testcase_11 | AC | 294 ms
48,640 KB |
testcase_12 | AC | 296 ms
48,512 KB |
testcase_13 | AC | 292 ms
48,640 KB |
testcase_14 | AC | 298 ms
48,736 KB |
testcase_15 | AC | 299 ms
48,640 KB |
testcase_16 | AC | 297 ms
48,572 KB |
testcase_17 | AC | 293 ms
48,768 KB |
testcase_18 | AC | 293 ms
48,640 KB |
testcase_19 | AC | 287 ms
48,636 KB |
testcase_20 | AC | 297 ms
48,696 KB |
testcase_21 | AC | 300 ms
48,768 KB |
testcase_22 | AC | 302 ms
48,744 KB |
testcase_23 | AC | 303 ms
48,768 KB |
testcase_24 | AC | 318 ms
48,768 KB |
testcase_25 | AC | 290 ms
48,740 KB |
testcase_26 | AC | 302 ms
48,676 KB |
testcase_27 | AC | 397 ms
78,836 KB |
testcase_28 | AC | 393 ms
79,592 KB |
testcase_29 | AC | 383 ms
76,504 KB |
testcase_30 | AC | 403 ms
76,160 KB |
testcase_31 | AC | 394 ms
65,024 KB |
testcase_32 | AC | 272 ms
52,172 KB |
testcase_33 | AC | 271 ms
52,264 KB |
testcase_34 | AC | 271 ms
52,284 KB |
testcase_35 | AC | 276 ms
52,172 KB |
testcase_36 | AC | 275 ms
52,308 KB |
testcase_37 | AC | 145 ms
52,360 KB |
testcase_38 | AC | 127 ms
52,152 KB |
testcase_39 | AC | 133 ms
52,152 KB |
testcase_40 | AC | 145 ms
52,504 KB |
testcase_41 | AC | 125 ms
52,424 KB |
コンパイルメッセージ
main.cpp: In member function 'int rerooting::dfs(int, int)': main.cpp:56:5: warning: control reaches end of non-void function [-Wreturn-type] 56 | } | ^ main.cpp: In member function 'int rerooting::find(int, int)': main.cpp:102:5: warning: control reaches end of non-void function [-Wreturn-type] 102 | } | ^ main.cpp: In member function 'void rerooting::dfs2(int, int, int)': main.cpp:68:16: warning: 'mex' may be used uninitialized [-Wmaybe-uninitialized] 68 | ans[v] = mex; main.cpp:63:13: note: 'mex' was declared here 63 | int mex; | ^~~
ソースコード
//@formatter:off #include<bits/stdc++.h> #define rep(i,n) for (int i = 0; i < int(n); ++i) #define rrep(i,n) for (int i = int(n)-1; i >= 0; i--) #define rep2(i,s,n) for (int i = int(s); i < int(n); ++i) #define all(a) a.begin(),a.end() #define rall(a) a.rbegin(),a.rend() #define pb push_back #define eb emplace_back #define vi vector<int> #define vvi vector<vector<int>> #define vl vector<ll> #define vvl vector<vector<ll>> #define vd vector<double> #define vvd vector<vector<double>> #define vs vector<string> #define vc vector<char> #define vvc vector<vector<char>> #define vb vector<bool> #define vvb vector<vector<bool>> #define vp vector<P> #define vvp vector<vector<P>> using namespace std; using ll = long long; using P = pair<int,int>; using LP = pair<ll,ll>; template<class S,class T> istream& operator>>(istream &is,pair<S,T> &p) { return is >> p.first >> p.second; } template<class S,class T> ostream& operator<<(ostream &os,const pair<S,T> &p) { return os<<'{'<<p.first<<","<<p.second<<'}'; } template<class T> istream& operator>>(istream &is,vector<T> &v) { for(T &t:v){is>>t;} return is; } template<class T> ostream& operator<<(ostream &os,const vector<T> &v) { os<<'[';rep(i,v.size())os<<v[i]<<(i==int(v.size()-1)?']':','); return os; } void Yes(bool b) { cout << (b ? "Yes" : "No") << '\n'; } void YES(bool b) { cout << (b ? "YES" : "NO") << '\n'; } template<class T> bool chmin(T& a,T b) {if(a > b){a = b; return true;} return false;} template<class T> bool chmax(T& a,T b) {if(a < b){a = b; return true;} return false;} const int inf = 1001001001; const ll linf = 1001001001001001001; //@formatter:on class rerooting { int n; vvi tree; vector<vector<int>> dp; vector<int> ans; int dfs(int v = 0, int p = -1) { int sz = tree[v].size(); vb ex(sz + 1); dp[v].resize(sz); rep(i, sz) { int u = tree[v][i]; if (u == p) continue; dp[v][i] = dfs(u, v); if (dp[v][i] <= sz) ex[dp[v][i]] = true; } rep(i, tree[v].size() + 1) if (!ex[i]) return i; } void dfs2(int dpP, int v = 0, int p = -1) { int sz = tree[v].size(); rep(i, sz) if (tree[v][i] == p) dp[v][i] = dpP; vi ex(sz + 1); rep(i, sz) if (dp[v][i] <= sz) ex[dp[v][i]]++; int mex; rep(i, sz + 1) if (!ex[i]) { mex = i; break; } ans[v] = mex; rep(i, sz) { int u = tree[v][i]; if (u == p) continue; int t; if (dp[v][i] > mex) t = mex; else { assert(dp[v][i] < mex and ex[dp[v][i]]); if (ex[dp[v][i]] > 1) t = mex; else t = dp[v][i]; } dfs2(t, u, v); } } void init() { dfs(); dfs2(0); } public: rerooting(int n, vvi tree) : n(n), tree(tree), ans(n), dp(n) { init(); }; int get_ans(int i) { return ans[i]; } int find(int pos, int gr) { rep(i, tree[pos].size()) { if (dp[pos][i] == gr) return tree[pos][i]; } } }; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); int n, m; cin >> n >> m; vi a(m); cin >> a; rep(i, m) a[i]--; vvi G(n); rep(_, n - 1) { int u, v; cin >> u >> v; u--; v--; G[u].pb(v); G[v].pb(u); } rerooting rt(n, G); int x = 0; vi b(m); rep(i, m) { b[i] = rt.get_ans(a[i]); x ^= b[i]; } if (x == 0) { cout << "-1 -1" << endl; return 0; } int mx = 0, nx = x; while (nx > 1) { mx++; nx >>= 1; } rep(i, m) if (b[i] >> mx & 1) { cout << i + 1 << ' '; int gr = x ^ b[i]; assert(gr < b[i]); cout << rt.find(a[i], gr) + 1 << endl; return 0; } }