Submission #658636

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
658636	2022-11-13 22:56:13	lunchbox1	Dynamic Diameter (CEOI19_diameter)	C++17	100 / 100	463 ms	46988 KiB

diameter

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/*
 Dynamic Diameter
 https://oj.uz/problem/view/CEOI19_diameter
*/
#include <bits/stdc++.h>
using namespace std;
const int N = 1e5, N_ = N * 2 - 1;
struct dat {
 long long a, b, ab, bc, abc;
 void lazy(long long x) {
  a += x;
  b -= 2 * x;
  ab -= x;
  bc -= x;
 }
 dat operator+(const dat& o) const {
  return {
   max(a, o.a),
   max(b, o.b),
   max(a + o.b, max(ab, o.ab)),
   max(b + o.a, max(bc, o.bc)),
   max(max(a + o.bc, ab + o.a), max(abc, o.abc))
  };
 }
} t[N_ * 4];
long long lz[N_ * 4];
 
 
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