Submission #211311

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
211311	2020-03-20 03:32:19	Kevin_Zhang_TW	Unique Cities (JOI19_ho_t5)	C++17	100 / 100	418 ms	40812 KiB

joi2019_ho_t5

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#include<bits/stdc++.h>
#define pb emplace_back
using namespace std;
using ll = long long;
const int maxn = 300010;
int n, m;
int c[maxn];
vector<int> edge[maxn];
int len[maxn], fp[maxn], dep[maxn], son[maxn];
namespace st{
  int st[maxn], stl;
  int cnt[maxn], _res;
  void _add_in(int a, int d) {
    if (cnt[a] == 0) ++_res;
    if ((cnt[a]+=d) == 0) --_res;
  }
  void push(int id) {
    _add_in(c[id], 1);
    st[stl++] = id;
  }
  void pop() {
    assert(--stl >= 0);
    _add_in(c[st[stl]], -1);
  }
  int back() {
    return st[stl-1];
  }
  void pop_dep(int d) {
    while (stl && dep[back()] >= d) pop();
  }
 
 
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• Subtask 1: 4 / 4
• Subtask 2: 32 / 32
• Subtask 3: 32 / 32
• Subtask 4: 32 / 32