Submission #258249

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
258249	2020-08-05 15:20:31	atoiz	Sky Walking (IOI19_walk)	C++14	100 / 100	2178 ms	83776 KiB

walk

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#include "walk.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <cstdio>
#include <cmath>
#include <tuple>
#include <cassert>
#include <numeric>
 
using namespace std;
using ll = long long;
 
const int MAXY = 1000100100;
const ll INFLL = 1e16;
int N, M, T;
vector<int> X, H, L, R, Y;
vector<int> valY;
 
int dist(int i, int j) { return abs(X[i] - X[j]); }
// int pos(int y) { return (int) (upper_bound(valY.begin(), valY.end(), y) - valY.begin() - 1); } // first <=
 
struct SegmentTree {
  vector<ll> lazy, arr;
  vector<int> cnt;
  SegmentTree(): lazy((T + 2) * 4, INFLL), arr((T + 2) * 4, INFLL), cnt((T + 2) * 4, 0) {}
 
  void push(int rt, int lo, int hi) {
    if (lazy[rt] != INFLL && cnt[rt]) {
      if (lo == hi) arr[lo] = min(arr[lo], lazy[rt]);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 14 / 14
• Subtask 3: 15 / 15
• Subtask 4: 18 / 18
• Subtask 5: 43 / 43