oj.uz

Submission #164241

# Submission time Handle Problem Language Result Execution time Memory
164241 2019-11-18T20:08:22 Z luciocf Teams (CEOI11_tea) C++14
20 / 100
 2500 ms 77552 KB 
#include <bits/stdc++.h>

#define ff first
#define ss second

using namespace std;

const int maxn = 1e6+10;

int n;
pair<int, int> a[maxn];

int dp[maxn], opt[maxn];

pair<int, int> tree[4*maxn];

vector<int> team[maxn];

void upd(int node, int l, int r, int pos, int v)
{
	if (l == r)
	{
		tree[node] = {v, l};
		return;
	}

	int mid = (l+r)>>1;

	if (pos <= mid) upd(2*node, l, mid, pos, v);
	else upd(2*node+1, mid+1, r, pos, v);

	tree[node] = max(tree[2*node], tree[2*node+1]);
}

pair<int, int> query(int node, int l, int r, int a, int b)
{
	if (l > b || r < a) return {0, 0};
	if (l >= a && r <= b) return tree[node];

	int mid = (l+r)>>1;

	return max(query(2*node, l, mid, a, b), query(2*node+1, mid+1, r, a, b));
}

int qtd(int k)
{
	memset(dp, 0, sizeof dp);
	memset(opt, 0, sizeof opt);

	for (int i = 1; i <= 4*n; i++)
		tree[i] = {0, 0};

	for (int i = 1; i <= n; i++)
	{
		if (i-a[i].ff < 0) continue;

		pair<int, int> pp = query(1, 1, n, max(1, i-k), i-a[i].ff);

		dp[i] = 1+pp.first, opt[i] = pp.second;
		upd(1, 1, n, i, dp[i]);
	}

	return dp[n];
}

int main(void)
{
	scanf("%d", &n);

	for (int i = 1; i <= n; i++)
	{
		scanf("%d", &a[i].ff);
		a[i].ss = i;
	}

	sort(a+1, a+n+1);

	int ans = qtd(n);

	int ini = 1, fim = n, ans2 = n;

	while (ini <= fim)
	{
		int mid = (ini+fim)>>1;

		if (qtd(mid) == ans) ans2 = mid, fim = mid-1;
		else ini = mid+1;
	}

	qtd(ans2);

	int aux = 0;

	for (int i = n; i >= 1; )
	{
		++aux;

		int j;
		for (j = i; j > opt[i]; j--)
			team[aux].push_back(a[j].ss);

		i = j;
	}

	printf("%d\n", ans);
	for (int i = 1; i <= ans; i++)
	{
		printf("%d", team[i].size());
		for (auto x: team[i])
			printf(" %d", x);
		printf("\n");
	}
}

Compilation message

tea.cpp: In function 'int main()':
tea.cpp:108:30: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
   printf("%d", team[i].size());
                ~~~~~~~~~~~~~~^
tea.cpp:68:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
tea.cpp:72:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i].ff);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 31608 KB Output is correct
2 Correct 33 ms 31736 KB Output is correct
3 Incorrect 32 ms 31736 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 41 ms 31736 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 31736 KB Output is correct
2 Correct 34 ms 31608 KB Output is correct
3 Correct 36 ms 31736 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 31948 KB Output is correct
2 Incorrect 59 ms 31992 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 31864 KB Output is correct
2 Incorrect 53 ms 31992 KB Output isn't correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 541 ms 36184 KB Output is correct
2 Correct 714 ms 35964 KB Output is correct

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 733 ms 36744 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2528 ms 64660 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2574 ms 76664 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2543 ms 77552 KB Time limit exceeded
2 Halted 0 ms 0 KB -