oj.uz

Submission #423233

# Submission time Handle Problem Language Result Execution time Memory
423233 2021-06-10T20:22:01 Z arayi Dancing Elephants (IOI11_elephants) C++17
26 / 100
 9000 ms 14676 KB 
#include "elephants.h"
#include <map>
#include <unordered_map>
#include <set>
#include <iostream>
using namespace std;

const int N = 2e5 + 30;
const int T = 80;
int n, l, fr, sc, ii;
int x[N];
unordered_map <int, int> mp, cl;
int nax[N], haj[N], a[N], b[N], x1[N];
set <int> fp;

void go(int x)
{
	int sm = 1, s = 0;
	int nx = x, v = x;
	while (s < T)
	{
		s++;
		if (x1[v] > x1[nx] + l) sm++, nx = v;
		if (x1[v] == sc) break;
		v = haj[v];
	}
	a[x] = sm;
	b[x] = x1[nx] + l;
}
void add(int x)
{
	mp[x] = ++ii; x1[ii] = x;
	auto i1 = fp.lower_bound(x);
	if (i1 != fp.end()) haj[ii] = mp[*i1], nax[mp[*i1]] = ii;
	if (i1 != fp.begin()) nax[ii] = mp[*(--i1)], haj[mp[*i1]] = ii;
	fp.insert(x);
	i1 = fp.end();
	fr = *fp.begin(), sc = *(--i1);
	int v = ii;
	for (int i = 0; i <= T + 2; i++)
	{
		go(v);
		if (x1[v] == fr) break;
		v = nax[v];
	}
}
void rmv(int x)
{
	int ii = mp[x];
	mp[x] = 0;
	if (x != sc && x != fr) haj[nax[ii]] = haj[ii], nax[haj[ii]] = nax[ii];
	fp.erase(x);
	auto i1 = fp.end();
	fr = *fp.begin(), sc = *(--i1);
	int v = ii;
	for (int i = 0; i <= T + 2; i++)
	{
		if (x1[v] == fr) break;
		v = nax[v];
		go(v);
	}
}
int ans()
{
	int v = mp[fr], ret = 0;
	while (x1[v] <= sc)
	{
		ret += a[v];
		if (b[v] >= sc) break;
		v = mp[*fp.lower_bound(b[v] + 1)];
	}
	return ret;
}
void init(int N, int L, int X[])
{
	n = N; l = L;
	for (int i = 0; i < n; i++)
	{
		x[i] = X[i];
		if (cl[x[i]] == 0) add(x[i]);
		cl[x[i]]++;
	}
}

int update(int i, int y)
{
	cl[x[i]]--;
	if (cl[x[i]] == 0) rmv(x[i]);
	x[i] = y;
	cl[y]++;
	if (cl[y] == 1) add(y);
	return ans();
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 3 ms 332 KB Output is correct
5 Correct 3 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 3 ms 332 KB Output is correct
5 Correct 3 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2920 ms 7764 KB Output is correct
8 Correct 3583 ms 8648 KB Output is correct
9 Correct 8670 ms 11288 KB Output is correct
10 Correct 8200 ms 14520 KB Output is correct
11 Correct 5256 ms 14676 KB Output is correct
12 Execution timed out 9044 ms 14136 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 3 ms 332 KB Output is correct
5 Correct 3 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2920 ms 7764 KB Output is correct
8 Correct 3583 ms 8648 KB Output is correct
9 Correct 8670 ms 11288 KB Output is correct
10 Correct 8200 ms 14520 KB Output is correct
11 Correct 5256 ms 14676 KB Output is correct
12 Execution timed out 9044 ms 14136 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #5
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 3 ms 332 KB Output is correct
5 Correct 3 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2920 ms 7764 KB Output is correct
8 Correct 3583 ms 8648 KB Output is correct
9 Correct 8670 ms 11288 KB Output is correct
10 Correct 8200 ms 14520 KB Output is correct
11 Correct 5256 ms 14676 KB Output is correct
12 Execution timed out 9044 ms 14136 KB Time limit exceeded
13 Halted 0 ms 0 KB -