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Submission #100239

# Submission time Handle Problem Language Result Execution time Memory
100239 2019-03-10T02:20:44 Z luciocf Gondola (IOI14_gondola) C++14
90 / 100
 31 ms 2408 KB 
#include <bits/stdc++.h>
#include "gondola.h"

using namespace std;

const int mod = 1e9+9;

typedef long long ll;

typedef pair<int, int> pii;

int valid(int n, int inputSeq[])
{
	int g[n+1];
	bool mark[250050];

	int first = -1;

	for (int i = 0; i < n; i++)
	{
		g[i] = inputSeq[i];

		if (mark[g[i]]) return 0;
		mark[g[i]] = 1;

		if (g[i] <= n && first == -1) first = i;
	}

	int cur = g[first];

	for (int i = first+1; i < n; i++)
	{
		cur = (cur == n ? 1 : cur+1);
		if (g[i] <= n && g[i] != cur) return 0;
	}

	for (int i = 0; i < first; i++)
	{
		cur = (cur == n ? 1 : cur+1);
		if (g[i] <= n && g[i] != cur) return 0;
	}

	return 1;
}

//----------------------

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	int g[n+1], ind[n+1];

	int first = -1;

	for (int i = 0; i < n; i++)
	{
		g[i] = gondolaSeq[i];

		if (g[i] <= n && first == -1) first = i;
	}

	if (first == -1)
	{
		for (int i = 0; i < n; i++)
			ind[i] = i+1;
	}
	else
	{
		int cur = g[first];

		for (int i = first+1; i < n; i++)
		{
			cur = (cur == n ? 1 : cur+1);

			ind[i] = cur;
		}

		for (int i = 0; i < first; i++)
		{
			cur = (cur == n ? 1 : cur+1);

			ind[i] = cur;
		}
	}

	int l = 0;
	priority_queue<pii, vector<pii>, greater<pii> > pq;

	for (int i = 0; i < n; i++) if (g[i] > n) pq.push({g[i], i});

	int cur = n+1;
	while (!pq.empty())
	{
		int v = pq.top().first, i = pq.top().second;
		pq.pop();

		replacementSeq[l++] = ind[i];
		
		while (cur < v) 
			replacementSeq[l++] = cur++;
		cur++;
	}

	return l;
}

//----------------------

ll pot(ll a, ll b)
{
	if (!b) return 1ll;

	ll t = pot(a, b/2);

	if (b%2 == 0) return (t*t)%mod;
	return (a*((t*t)%mod))%mod;
}

int countReplacement(int n, int inputSeq[])
{
	if (!valid(n, inputSeq)) return 0;

	int last = n+1, less;
	ll ans = 1ll;

	bool dif = 0;

	sort(inputSeq, inputSeq+n);

	int pos = n+1;

	for (int i = 0; i < n; i++)
	{
		if (inputSeq[i] > n && pos == n+1) pos = i;
		else if (inputSeq[i] <= n) dif = 1;
	}

	less = n-pos;

	for (int i = pos; i < n; i++)
	{
		int v = inputSeq[i];

		ans = (ans*pot(1ll*less, 1ll*(v-last)))%mod;

		last = v+1, less--;
	}

	if (!dif)
	{
		ans = (ans*1ll*n)%mod;
	}

	return ans;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:23:16: warning: 'mark[<unknown>]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if (mark[g[i]]) return 0;
       ~~~~~~~~~^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 300 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 356 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 16 ms 768 KB Output is correct
8 Correct 14 ms 1024 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 12 ms 1024 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 6 ms 640 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 9 ms 896 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 15 ms 1060 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 7 ms 896 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 14 ms 1148 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 15 ms 1280 KB Output is correct
12 Correct 12 ms 1408 KB Output is correct
13 Correct 17 ms 1552 KB Output is correct
14 Correct 11 ms 1280 KB Output is correct
15 Correct 31 ms 2408 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 3 ms 256 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 256 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 25 ms 1152 KB Output is correct
10 Correct 17 ms 996 KB Output is correct
11 Correct 7 ms 768 KB Output is correct
12 Correct 7 ms 684 KB Output is correct
13 Correct 3 ms 384 KB Output is correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 3 ms 256 KB Output is correct
9 Correct 19 ms 1024 KB Output is correct
10 Correct 18 ms 1024 KB Output is correct
11 Correct 11 ms 776 KB Output is correct
12 Correct 12 ms 640 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Runtime error 17 ms 1152 KB Execution killed with signal 11 (could be triggered by violating memory limits)
15 Halted 0 ms 0 KB -