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Submission #136067

# Submission time Handle Problem Language Result Execution time Memory
136067 2019-07-24T17:00:22 Z arthurconmy Gondola (IOI14_gondola) C++14
90 / 100
 23 ms 2276 KB 
#include <bits/stdc++.h>
#ifndef ARTHUR_LOCAL
	#include "gondola.h"
#endif
using namespace std;
using ll = long long;

bool used[250001];
const ll p = 1000000009;

ll modpow(ll a, int b)
{
	if(b==0) return 1LL;

	ll cur = modpow(a,int(b/2));
	cur*=cur;
	cur%=p;

	if(b%2 == 1) cur*=a;
	cur%=p;

	return cur;
}

int valid(int n, int S[])
{
	pair<int,int> minn = {int(1e9),int(1e9)};

	for(int i=0; i<n; i++)
	{
		if(used[S[i]]) return 0;
		used[S[i]]=1;

		minn = min(minn, make_pair(S[i],i));
	}

	int cur = minn.first;
	if(cur>n) return 1;

	int one_pos = (minn.second - minn.first + 1 + n)%n;

	for(int j=0; j<n; j++)
	{
		if(S[(one_pos+j)%n] == j+1 || S[(one_pos+j)%n]>n) continue;
		return 0;
	}

	return 1;
}

int replacement(int n, int G[], int R[])
{
	pair<int,int> minn = {int(1e9),int(1e9)};

	for(int i=0; i<n; i++)
	{
		minn = min(minn, make_pair(G[i],i));
	}

	int cur = minn.first;

	int one_pos = (minn.second - minn.first + 1 + n)%n;

	if(cur>n) one_pos=0;

	vector<pair<int,int>> reps;

	for(int j=0; j<n; j++)
	{
		if(G[(one_pos+j)%n] == j+1) continue;
		reps.push_back(make_pair(G[(one_pos+j)%n],j+1));
	}

	sort(reps.begin(),reps.end());

	int ans=0;
	int next_boat=n+1;

	for(auto rep:reps)
	{
		int cur = rep.second;

		for(int i=next_boat; i<=rep.first; i++)
		{
			// cout << cur << endl;
			R[ans] = cur;
			cur=next_boat;

			ans++;
			next_boat++;
		}
	}

	// cout << endl;

	return ans;
}

int countReplacement(int n, int S[])
{
	pair<int,int> minn = {int(1e9),int(1e9)};

	for(int i=0; i<n; i++)
	{
		if(used[S[i]]) return 0;
		used[S[i]]=1;

		minn = min(minn, make_pair(S[i],i));
	}

	int cur = minn.first;
	int one_pos = (minn.second - minn.first + 1 + n)%n;
	bool orientation_lost=0;

	if(cur>n)
	{
		one_pos=0;
		orientation_lost=1;
	}

	for(int j=0; j<n; j++)
	{
		if(S[(one_pos+j)%n] == j+1 || S[(one_pos+j)%n]>n) continue;
		return 0;
	}

	vector<int> V={0};

	for(int j=0; j<n; j++)
	{
		if(S[(one_pos+j)%n] == j+1) continue;
		V.push_back(S[(one_pos+j)%n]-n);
	}

	if(V.size()==1) return 1;

	sort(V.begin(),V.end());

	ll ans=1;

	for(int i=1; i<int(V.size()); i++)
	{
		ans*=modpow(V.size()-i,V[i]-V[i-1]-1);
		ans%=p;
	}

	if(orientation_lost)
	{
		ans*=n;
		ans%=p;
	}

	return int(ans);
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 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 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 7 ms 504 KB Output is correct
7 Correct 15 ms 760 KB Output is correct
8 Correct 11 ms 632 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 13 ms 760 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 7 ms 504 KB Output is correct
7 Correct 14 ms 732 KB Output is correct
8 Correct 11 ms 632 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 13 ms 760 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 8 ms 632 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 15 ms 760 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 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 256 KB Output is correct
5 Correct 2 ms 376 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 2 ms 376 KB Output is correct
3 Correct 2 ms 252 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 12 ms 636 KB Output is correct
12 Correct 14 ms 632 KB Output is correct
13 Correct 19 ms 1260 KB Output is correct
14 Correct 12 ms 632 KB Output is correct
15 Correct 23 ms 2276 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 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 2 ms 348 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 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 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 20 ms 1316 KB Output is correct
10 Correct 17 ms 1016 KB Output is correct
11 Correct 8 ms 888 KB Output is correct
12 Correct 9 ms 760 KB Output is correct
13 Correct 4 ms 504 KB Output is correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 20 ms 1144 KB Output is correct
10 Correct 17 ms 1016 KB Output is correct
11 Correct 8 ms 760 KB Output is correct
12 Correct 9 ms 760 KB Output is correct
13 Correct 4 ms 504 KB Output is correct
14 Runtime error 18 ms 1912 KB Execution killed with signal 11 (could be triggered by violating memory limits)
15 Halted 0 ms 0 KB -