oj.uz

Submission #529371

# Submission time Handle Problem Language Result Execution time Memory
529371 2022-02-22T22:30:35 Z flappybird Dancing Elephants (IOI11_elephants) C++17
26 / 100
 9000 ms 12660 KB 
#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
#define MAX 150010
#define B 400

int N;
int L;
int arr[MAX];
int cnt;
map<int, int> ncnt;
int gcnt;
set<int> allv;
set<pair<int, pi>> bukkit[MAX];

//refresh bukkit
void refb(int b) {
	int K = bukkit[b].size();
	set<pair<int, pi>> s1;
	for (auto it = prev(bukkit[b].end());; it--) {
		int x = it->first;
		int e = x + L;
		auto ub = s1.lower_bound(make_pair(e + 1, pi(0, 0)));
		pair<int, pi> ins;
		ins.first = x;
		if (ub == s1.end()) ins.second = pi(1, e);
		else ins.second = pi(ub->second.first + 1, ub->second.second);
		s1.insert(ins);
		if (it == bukkit[b].begin()) break;
	}
	bukkit[b].swap(s1);
}

void ref() {
	gcnt = 0;
	for (auto v : allv) {
		if (bukkit[gcnt].size() == B) gcnt++;
		bukkit[gcnt].insert(make_pair(v, pi(0, 0)));
	}
	gcnt++;
	for (int i = 0; i < gcnt; i++) refb(i);
}

int calc() {
	int en = -1, i;
	int cnt = 0;
	for (i = 0; i < gcnt; i++) {
		if (bukkit[i].empty()) continue;
		auto ub = bukkit[i].lower_bound(make_pair(en + 1, pi(0, 0)));
		cnt += ub->second.first;
		en = ub->second.second;
	}
	return cnt;
}

void init(int N, int L, int X[]) {
	::N = N;
	::L = L;
	int i;
	for (i = 0; i < N; i++) arr[i] = X[i], allv.insert(arr[i]), ncnt[arr[i]]++;
	ref();
}

bool cmp(set<pair<int, pi>>& s1, set<pair<int, pi>>& s2) {
	return s1.begin()->first < s2.begin()->first;
}

int update(int i, int y) {
	cnt++;
	if (cnt == B) ref();
	int x = arr[i];
	arr[i] = y;
	ncnt[x]--;
	if (ncnt[x] == 0) {
		int i, ind = 0;
		for (i = 0; i < gcnt; i++) if (bukkit[i].size() && bukkit[i].begin()->first <= x) ind = i;
		auto it = bukkit[ind].lower_bound(make_pair(x, pi(0, 0)));
		bukkit[ind].erase(it);
		allv.erase(x);
		refb(ind);
	}
	if (ncnt[y] == 0) {
		allv.insert(y);
		int i, ind = 0;
		for (i = 0; i < gcnt; i++) if (bukkit[i].size() && bukkit[i].begin()->first <= y) ind = i;
		bukkit[ind].insert(make_pair(y, pi(0, 0)));
		allv.insert(y);
		refb(ind);
	}
	ncnt[y]++;
	return calc();
}

Compilation message

elephants.cpp: In function 'void refb(int)':
elephants.cpp:21:6: warning: unused variable 'K' [-Wunused-variable]
   21 |  int K = bukkit[b].size();
      |      ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7364 KB Output is correct
2 Correct 3 ms 7372 KB Output is correct
3 Correct 4 ms 7372 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7364 KB Output is correct
2 Correct 3 ms 7372 KB Output is correct
3 Correct 4 ms 7372 KB Output is correct
4 Correct 6 ms 7372 KB Output is correct
5 Correct 6 ms 7372 KB Output is correct
6 Correct 4 ms 7372 KB Output is correct

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7364 KB Output is correct
2 Correct 3 ms 7372 KB Output is correct
3 Correct 4 ms 7372 KB Output is correct
4 Correct 6 ms 7372 KB Output is correct
5 Correct 6 ms 7372 KB Output is correct
6 Correct 4 ms 7372 KB Output is correct
7 Execution timed out 9042 ms 12660 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7364 KB Output is correct
2 Correct 3 ms 7372 KB Output is correct
3 Correct 4 ms 7372 KB Output is correct
4 Correct 6 ms 7372 KB Output is correct
5 Correct 6 ms 7372 KB Output is correct
6 Correct 4 ms 7372 KB Output is correct
7 Execution timed out 9042 ms 12660 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #5
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7364 KB Output is correct
2 Correct 3 ms 7372 KB Output is correct
3 Correct 4 ms 7372 KB Output is correct
4 Correct 6 ms 7372 KB Output is correct
5 Correct 6 ms 7372 KB Output is correct
6 Correct 4 ms 7372 KB Output is correct
7 Execution timed out 9042 ms 12660 KB Time limit exceeded
8 Halted 0 ms 0 KB -