Submission #445492

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
445492	2021-07-18 10:16:20	ivan_tudor	Mergers (JOI19_mergers)	C++14	0 / 100	98 ms	75432 KiB

mergers

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#include<bits/stdc++.h>
using namespace std;
const int N = 500005;
vector<int> gr[N];
int par[20][N];
int in[N], out[N];
int sum[N];
int frv[N];
void dfs_prec(int nod, int dad,int &cur){
  par[0][nod] = dad;
  in[nod] = ++cur;
  for(auto x:gr[nod]){
    if(x != dad){
      dfs_prec(x, nod, cur);
    }
  }
  out[nod] = cur;
}
void prec_lca(int n){
  for(int log = 1; log < 20; log ++){
    for(int nod = 1; nod <=n; nod++)
      par[log][nod] = par[log -1][par[log - 1][nod]];
  }
}
bool is_dad(int nod, int son){
  if(in[nod]<= in[son] && out[nod] <= out[son])
    return true;
  return false;
}
int get_lca(int a, int b){
 
 
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Compilation message (stderr)

mergers.cpp: In function 'int dfs(int, int, int)':
mergers.cpp:67:1: warning: no return statement in function returning non-void [-Wreturn-type]
   67 | }
      | ^
mergers.cpp: In function 'int main()':
mergers.cpp:74:7: warning: unused variable 'nrt' [-Wunused-variable]
   74 |   int nrt;
      |       ^~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 24
• Subtask 3: 0 / 14
• Subtask 4: 0 / 22
• Subtask 5: 0 / 30