Submission #382592

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
382592	2021-03-27 20:44:14	wind_reaper	Railway (BOI17_railway)	C++17	100 / 100	130 ms	23012 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
#include <bits/stdc++.h>
using namespace std;
const int MXN = 100001;
const int lg = 19;
int up[lg][MXN], tin[MXN], tout[MXN], chosen[MXN];
array<int, 2> edges[MXN];
vector<int> adj[MXN];
int timer = 0;
int tree[MXN];
int n, m, k;
void upd(int pos, int val){
  for(; pos <= n; pos += (pos&(-pos)))
    tree[pos] += val;
}
int query(int idx){
  int sum = 0;
  for(; idx > 0; idx -= (idx&(-idx)))
    sum += tree[idx];
  return sum;
}
 
 
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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