Submission #463808

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
463808	2021-08-11 19:21:52	xyzyzl	Railway (BOI17_railway)	C++14	100 / 100	286 ms	23736 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
const int MAXN = 100005;
#define bitinc(x) x&-x
int n, m, k;
vector<int> adj[MAXN];
int par[100005][20];
int tmp = 0, in[200005], ot[200005], bit[200005];
int sum(int ind)
{
  int sm = 0;
  while(ind > 0)
  {
    sm += bit[ind];
    ind -= bitinc(ind);
  }
  return sm;
}
void upd(int ind, int val)
{
  while(ind <= n)
  {
    bit[ind] += val;
    ind += bitinc(ind);
  }
}
 
 
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• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25