Submission #671766

#	Time	Username	Problem	Language	Result	Execution time	Memory
671766		Hacv16	Dancing Elephants (IOI11_elephants)	C++17	26 / 100	9058 ms	2984 KiB

elephants

#include "elephants.h"
#include<bits/stdc++.h>
 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
 
#define sz(x) (int) x.size()
#define all(x) x.begin(), x.end()
 
using namespace std;
 
typedef long long ll;
const int MAX = 2e6 + 15;
 
int n, l, pos[MAX], X[] = {10, 15, 17, 20};
vector<int> x;
 
void init(int n_, int l_, int x_[]){
  n = n_, l = l_;
  x.resize(n);

  for(int i = 0; i < n; i++)
     x[i] = x_[i], pos[i] = x[i];
}

vector<int> Merge(vector<int>& x, vector<int>& y, vector<int>& z){
  vector<int> aux(sz(x) + sz(y)), ret(sz(x) + sz(y) + sz(z));

  merge(all(x), all(y), aux.begin());
  merge(all(aux), all(z), ret.begin());

  return ret;
}
 
int update(int i, int y){ 
  vector<int> a, b, c;

  int id = 0;
  while(x[id] < pos[i]) id++;

  for(int j = 0; j < id; j++)
    a.push_back(x[j]);

  for(int j = id + 1; j < n; j++)
    b.push_back(x[j]);

  c.push_back(y);

  vector<int> aux = Merge(a, b, c);
  swap(aux, x);

  int ans = 0, r = -1;
 
  for(int j = 0; j < n; j++) 
    if(x[j] > r) ans++, r = x[j] + l;
 
  pos[i] = y;

  return ans;
}

/*int main(){
  init(4, 10, X);
 
  cout << update(2, 16) << '\n';
  cout << update(1, 25) << '\n';
  cout << update(3, 35) << '\n';
  cout << update(0, 38) << '\n';
  cout << update(2, 0) << '\n';
 
  return 0;
}*/

• Subtask 1: 10 / 10
• Subtask 2: 16 / 16
• Subtask 3: 0 / 24
• Subtask 4: 0 / 47
• Subtask 5: 0 / 3