Submission #34868

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
34868	2017-11-16 09:58:27	cheater2k	Factories (JOI14_factories)	C++14	100 / 100	4616 ms	277444 KiB

factories

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#include "factories.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 500005;
int n;
vector< pair<int,int> > G[N];
int t[N], TIME;
int dep[N], e[N << 1], lg[N << 1];
pair<int,int> rmq[N << 1][20];
long long dist[N];
void dfs(int u, int p) {
  t[u] = ++TIME; e[TIME] = u;
  for (auto &edge : G[u]) {
    int v = edge.second, w = edge.first; if (v == p) continue;
    dist[v] = dist[u] + w; dep[v] = dep[u] + 1; dfs(v, u);
    e[++TIME] = u;
  }
}
int get(int l, int r) {
  int k = lg[r - l + 1];
  pair<int,int> res = min(rmq[l][k], rmq[r - (1 << k) + 1][k]);
  return res.second;
}
int lca(int u, int v) {
  if (t[u] > t[v]) swap(u, v);
 
 
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Compilation message (stderr)

factories.cpp: In function 'void Init(int, int*, int*, int*)':
factories.cpp:43:47: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   rmq[i][j] = min(rmq[i][j-1], rmq[i + (1 << j-1)][j-1]);
                                               ^

• Subtask 1: 15 / 15
• Subtask 2: 18 / 18
• Subtask 3: 67 / 67