Submission #517114

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
517114	2022-01-22 14:45:57	tzuyuna	Roadside Advertisements (NOI17_roadsideadverts)	C++14	100 / 100	137 ms	16212 KiB

roadsideadverts

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#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define si second
#define ll long long 
typedef pair<int,int> pi;
struct edge {
  int u, v, c;
};
const int mxn = 100005; 
int N, Q; 
int dist[mxn], twok[mxn][18], depth[mxn], par[mxn];
vector<pi> adj[mxn];
void dfs(int x, int p, int d, long long wd) {
  depth[x] = d;
  dist[x] = wd;
  twok[x][0] = p;
  for (int i = 1; i <= 17; i++) {
    if (twok[x][i - 1] == -1) break;
    twok[x][i] = twok[twok[x][i - 1]][i - 1];
  }
  for (auto it: adj[x]) {
    if (it.first != p) dfs(it.first,x,d+1,wd+it.second);
  }
}
int kth_parent(int x, int k){
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 23 / 23
• Subtask 3: 40 / 40
• Subtask 4: 30 / 30