Submission #199497

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
199497	2020-02-01 16:10:30	houtaru	Triple Jump (JOI19_jumps)	C++17	100 / 100	856 ms	78200 KiB

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#include <bits/stdc++.h>
using namespace std;
typedef array<int, 3> Node; // 0/1/2: c/ab/abc
const int maxn = 1 << 19;
const int INF = 1e9;
int n, q;
int A[maxn];
vector<int> p[maxn];
vector<pair<int, int>> query[maxn];
struct segtree {
  Node T[maxn << 1];
  Node upd(const Node&x, const Node& y) {
    return {max(x[0], y[0]), max(x[1], y[1]), max({x[1] + y[0], x[2], y[2]})};
  }
  
  void init() {
    for (int i = maxn; i < maxn << 1; ++i) T[i] = {A[i - maxn], -INF, -INF};
    for (int i = maxn - 1; i > 0; --i) T[i] = upd(T[2 * i], T[2 * i + 1]);
  }
  void update(int i, int v) {
    i += maxn;
    T[i][1] = max(T[i][1], v);
    T[i][2] = max(T[i][2], T[i][1]  + T[i][0]);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 14 / 14
• Subtask 3: 27 / 27
• Subtask 4: 54 / 54