Submission #345799

#	Time	Username	Problem	Language	Result	Execution time	Memory
345799		casperwang	Dancing Elephants (IOI11_elephants)	C++14	26 / 100	9029 ms	1644 KiB

elephants

#include "elephants.h"
#include <bits/stdc++.h>
#define All(x) x.begin(), x.end()
#define pii pair<int,int>
#define ff first
#define ss second
using namespace std;
#define debug(args...) kout("[ " + string(#args) + " ]", args)
void kout() { cerr << endl; }
template <class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ',kout(b...); }
template <class T> void pary(T L, T R) { while (L != R) cerr << *L << " \n"[++L==R]; }
 
const int MAXN = 150000;
int n, len;
map <int,int> arr;
vector <int> a;
int ans;
 
void init(int N, int L, int X[]) {
  n = N, len = L;
  ans = 0;
  arr.clear();
  a.clear(), a.resize(N);
  for (int i = 0; i < n; i++)
    a[i] = X[i], arr[a[i]]++;
}
 
int solve() {
  auto it = arr.begin();
  int cnt = 0;
  while (it != arr.end()) {
    cnt++;
    it = arr.upper_bound(it->ff + len);
  }
  return cnt;
}
 
int update(int i, int y) {
  arr[a[i]]--;
  if (!arr[a[i]]) arr.erase(a[i]);
  a[i] = y;
  arr[a[i]]++;
  return solve();
}

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