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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#121329#4839. Smaller LCAmemset0WA 3006ms148208kbC++206.7kb2023-07-07 23:06:242023-07-07 23:06:28

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-07-07 23:06:28]
  • 评测
  • 测评结果:WA
  • 用时:3006ms
  • 内存:148208kb
  • [2023-07-07 23:06:24]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 9;
int n, rt, all, tot, tim, fa[N], siz[N], mxp[N], dfn[N], ans[N];
bool vis[N];
vector<int> cur, G[N];
vector<tuple<int, int, int, int>> qry;
namespace ini {
int tot, fa[N], dfn[N], siz[N];
long long sum, pre[N];
void dfs(int u) {
  dfn[u] = ++tot;
  siz[u] = 1;
  for (int v : G[u])
    if (v != fa[u]) {
      fa[v] = u;
      dfs(v);
      siz[u] += siz[v];
    }
}
void push(int u, int x) {
  pre[dfn[u]] += x;
  pre[dfn[u] + 1] -= x;
}
void push(int u, int v, int x) {
  if (v == fa[u]) {
    pre[0] += x;
    pre[dfn[u]] -= x;
    pre[dfn[u] + siz[u]] += x;
  } else {
    pre[dfn[v]] += x;
    pre[dfn[v] + siz[v]] -= x;
  }
}
inline void push(int u, int v, int w, int x) {
  // fprintf(stderr, "push %d %d %d : %d\n", u, v, w, x);
  pre[0] += x;
  push(u, v, -x);
  // for (int i = 0; i <= n; i++) cerr << pre[i] << " \n"[i == n];
  push(u, w, -x);
  // for (int i = 0; i <= n; i++) cerr << pre[i] << " \n"[i == n];
}
void init() {
  dfs(1);
  // for (int i = 1; i <= n; i++) cerr << dfn[i] << " \n"[i == n];
  // for (int i = 1; i <= n; i++) cerr << siz[i] << " \n"[i == n];
}
void solve() {
  // for (int i = 0; i <= n; i++) cerr << pre[i] << " \n"[i == n];
  for (int i = 1; i <= n; i++) pre[i] += pre[i - 1];
  // for (int i = 0; i <= n; i++) cerr << pre[i] << " \n"[i == n];
  for (int i = 1; i <= n; i++) ans[i] += pre[dfn[i]];
}
} // namespace ini
struct CountNode {
  int n, tim, s[N << 1];
  vector<int> ans, valx, valy;
  vector<pair<int, int>> nod;
  vector<tuple<int, int, int>> qry;
  inline void add(int k) {
    for (; k <= n; k += k & -k) s[k]++;
  }
  inline void ask(int k, int &x) {
    for (; k; k -= k & -k) x += s[k];
  }
  inline void addNode(int x, int y) {
    // cerr << "counter::addNode " << x << " " << y << endl;
    nod.emplace_back(x, y);
    valx.push_back(x), valy.push_back(y);
  }
  inline void addQuery(int x, int y) {
    // cerr << "counter::addQuery " << x << " " << y << endl;
    qry.emplace_back(x, y, qry.size());
    valx.push_back(x), valy.push_back(y);
  }
  inline int getQuery() {
    // cerr << "counter::getQuery " << ans[tim] << endl;
    return ans[tim++];
  }
  void init() {
    // cerr << "counter::init" << endl;
    tim = 0, nod.clear(), qry.clear(), valx.clear(), valy.clear();
  }
  void solve() {
    if (!nod.size() || !qry.size()) return;
    cerr << "counter::solve " << nod.size() << " " << qry.size() << endl;
    ans.resize(qry.size());
    fill(ans.begin(), ans.end(), 0);
    if (nod.size() < 5) {
      for (auto &[xx, yy] : nod) {
        for (auto &[x, y, i] : qry) {
          if (xx <= x && yy <= y) ans[i]++;
        }
      }
      return;
    }
    sort(valx.begin(), valx.end());
    sort(valy.begin(), valy.end());
    valx.erase(unique(valx.begin(), valx.end()), valx.end());
    valy.erase(unique(valy.begin(), valy.end()), valy.end());
    n = valy.size();
    fill(s, s + n + 1, 0);
    for (auto &[x, y] : nod) {
      x = lower_bound(valx.begin(), valx.end(), x) - valx.begin() + 1;
      y = lower_bound(valy.begin(), valy.end(), y) - valy.begin() + 1;
      // cerr << "node " << x << " " << y << endl;
    }
    for (auto &[x, y, i] : qry) {
      x = lower_bound(valx.begin(), valx.end(), x) - valx.begin() + 1;
      y = lower_bound(valy.begin(), valy.end(), y) - valy.begin() + 1;
      // cerr << "query " << x << " " << y << " " << i << endl;
    }
    sort(nod.begin(), nod.end());
    sort(qry.begin(), qry.end());
    int i = 0, j = 0;
    for (int x = 1; x <= valx.size(); x++) {
      while (i < nod.size() && nod[i].first == x) {
        add(nod[i].second), i++;
      }
      while (j < qry.size() && get<0>(qry[j]) == x) {
        ask(get<1>(qry[j]), ans[get<2>(qry[j])]), j++;
      }
    }
  }
} counter;
void getroot(int u) {
  siz[u] = 1, mxp[u] = 0;
  for (int v : G[u])
    if (!vis[v] && v != fa[u]) {
      fa[v] = u;
      getroot(v);
      siz[u] += siz[v];
      mxp[u] = max(mxp[u], siz[v]);
    }
  mxp[u] = max(mxp[u], all - siz[u]);
  if (!rt || mxp[u] < mxp[rt]) rt = u;
}
void getnode(int u) {
  // cerr << "get node " << u << endl;
  cur.push_back(u);
  dfn[u] = ++tot, siz[u] = 1;
  for (int v : G[u]) {
    if (!vis[v] && v != fa[u]) {
      fa[v] = u;
      getnode(v);
      siz[u] += siz[v];
    }
  }
}
void getquery(int u) {
  // cerr << "get query " << u << endl;
  for (int v : G[u])
    if (!vis[v] && v != fa[u]) {
      counter.addQuery(dfn[v] + siz[v] - 1, u - 1);
      counter.addQuery(dfn[v] - 1, u - 1);
      getquery(v);
    }
}
void pushans(int u) {
  // cerr << "push ans " << u << " " << w << " " << tot << endl;
  for (int v : G[u])
    if (!vis[v] && v != fa[u]) {
      int cur = counter.getQuery();
      cur -= counter.getQuery();
      ini::push(u, v, fa[u], cur);
      pushans(v);
    }
}
void solve(int u) {
  // cerr << "=== solve " << u << " ===" << endl;
  vis[u] = 1;
  vector<int> ch;
  set<pair<int, int>> pre = {{u, 0}};
  map<int, vector<pair<int, int>>> p;
  tot = 1, dfn[u] = siz[u] = 1;
  for (int v : G[u]) {
    if (!vis[v]) ch.push_back(v);
  }
  for (int v : ch) {
    fa[v] = u;
    cur.clear(), getnode(v);
    siz[u] += siz[v];
    p[v] = {};
    for (int x : cur)
      for (auto &[y, w] : pre) {
        if ((long long)x * y < n) {
          p[v].emplace_back(x, y);
          if (w) p[w].emplace_back(y, x);
          if (u > (long long)x * y) {
            ini::push(u, v, w, 1);
          }
        } else {
          break;
        }
      }
    for (int x : cur) pre.insert(make_pair(x, v));
  }
  qry.clear(), tim = 0;
  counter.init();
  for (int v : ch)
    for (auto &[x, y] : p[v]) {
      counter.addNode(dfn[x], x * y);
    }
  for (int v : ch) getquery(v);
  counter.solve();
  for (int v : ch) pushans(v);
  // cerr << tim << " " << qry.size() << endl;
  for (int v : ch) {
    rt = 0, all = siz[v], getroot(v);
    // fprintf(stderr, "%d -> %d :: rt = %d, all = %d, mxp = %d\n", u, v, rt, all, mxp[rt]);
    solve(rt);
  }
}
int main() {
#ifdef memset0
  freopen("1.in", "r", stdin);
  // freopen("2.in", "r", stdin);
  // freopen("2.out", "w", stdout);
#endif
  ios::sync_with_stdio(0), cin.tie(0);
  cin >> n;
  for (int u, v, i = 1; i < n; i++) {
    cin >> u >> v;
    G[u].push_back(v);
    G[v].push_back(u);
  }
  ini::init();
  rt = 0, all = n, getroot(1), solve(rt);
  ini::solve();
  long long tot = (long long)n * (n - 1) / 2 + n;
  // for (int i = 1; i <= n; i++) cerr << ans[i] << " \n"[i == n];
  cerr << "time: " << clock() / (double)CLOCKS_PER_SEC << endl;
  for (int i = 1; i <= n; i++) cout << (tot - ans[i]) << '\n';
  cerr << "time: " << clock() / (double)CLOCKS_PER_SEC << endl;
}

详细

Test #1:

score: 100
Accepted
time: 3ms
memory: 22252kb

input:

5
1 2
4 2
2 5
3 5

output:

15
15
15
15
14

result:

ok 5 number(s): "15 15 15 15 14"

Test #2:

score: -100
Wrong Answer
time: 3006ms
memory: 148208kb

input:

300000
40632 143306
32259 40632
225153 143306
269774 225153
289668 40632
191636 269774
85717 191636
58564 191636
156509 143306
289939 40632
247103 269774
40257 40632
98149 289668
142277 143306
291616 40257
46813 225153
56324 143306
277154 142277
53903 289668
114266 32259
152231 58564
241151 152231
4...

output:

44999407603
44999574536
44999586043
44999585060
44999023019
44999455346
44999341802
44999096072
44998997364
44999089389
44999570576
44999096792
44999219846
44999278447
44999392621
44999330700
44999080158
44999253593
44999264466
44999083957
44999520350
44999249314
44999324112
44999092905
44999323047
...

result:

wrong answer 1st numbers differ - expected: '44999437117', found: '44999407603'