Submission #798204

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
798204	2023-07-30 13:28:50	vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	34 / 100	654 ms	262144 KiB

sortbooks

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#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e6+3, maxm = 1e6+3, maxw = 1e9+3;
int n, m;
int w[maxn];
int mxsum[4*maxn];
set<int> els[4*maxn];
void build(int l, int r, int v) {
  if (l == r) {
    mxsum[v] = -1;
    els[v].insert(-w[l]);
  } else {
    int mid = (l+r)/2;
    build(l, mid, v*2);
    build(mid+1, r, v*2+1);
    auto it = els[v*2+1].upper_bound(*els[v*2].begin());
    mxsum[v] = max({mxsum[v*2], mxsum[v*2+1], (it == els[v*2+1].end() ? -1 : -*els[v*2].begin() - *it)});
    for (int x : els[v*2]) els[v].insert(x);
    for (int x : els[v*2+1]) els[v].insert(x);
  }
}
int query2(int l, int r, int v, int lb, int rb) {
  if (r < lb || l > rb) return -1;
  if (l >= lb && r <= rb) return -*els[v].begin();
  int mid = (l+r)/2;
  return max(query2(l, mid, v*2, lb, rb), query2(mid+1, r, v*2+1, lb, rb));
}
 
 
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• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 0 / 13
• Subtask 4: 17 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23