Submission #1090729

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1090729	2024-09-18 16:02:50	vjudge1	Safety (NOI18_safety)	C++17	100 / 100	239 ms	21076 KiB

safety

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#include <cassert>
#include <iostream>
#include <set>
int main() {
  std::cin.tie(NULL)->sync_with_stdio(false);
  
  int n;
  long long h;
  std::cin >> n >> h;
  int m = 0;
  long long shift = -h, c = 0;
  std::multiset<long long> m_changes[2]; // xpos for each m changes +1
  for (int i = 0; i < n; i++) {
    long long x;
    std::cin >> x;
    // shift by h
    shift += h;
    c -= h * m;
    // append to line
    m_changes[0].insert(x + shift);
    m_changes[1].insert(x - shift);
    
    // normalize
    while (true) {
      long long x_l = *m_changes[0].rbegin();
      long long x_r = *m_changes[1].begin();
 
 
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