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Submission #136069

# Submission time Handle Problem Language Result Execution time Memory
136069 2019-07-24T17:03:31 Z arthurconmy Gondola (IOI14_gondola) C++14
90 / 100
 25 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, ll b)
{
	if(b==0) return 1LL;

	ll cur = modpow(a,ll(b/2LL));
	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());
	//(auto v:V) cout << v << endl;

	ll ans=1;

	for(int i=1; i<int(V.size()); i++)
	{
		ans*=modpow(V.size()-i,ll(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 256 KB Output is correct
2 Correct 2 ms 256 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

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 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 452 KB Output is correct
6 Correct 7 ms 632 KB Output is correct
7 Correct 13 ms 760 KB Output is correct
8 Correct 11 ms 636 KB Output is correct
9 Correct 5 ms 248 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 256 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 7 ms 508 KB Output is correct
7 Correct 13 ms 760 KB Output is correct
8 Correct 11 ms 636 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 13 ms 664 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 376 KB Output is correct
15 Correct 14 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 376 KB Output is correct
3 Correct 2 ms 376 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 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 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 3 ms 404 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 256 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 376 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 632 KB Output is correct
12 Correct 14 ms 632 KB Output is correct
13 Correct 18 ms 1276 KB Output is correct
14 Correct 11 ms 632 KB Output is correct
15 Correct 25 ms 2276 KB Output is correct

Subtask #7
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 376 KB Output is correct

Subtask #8
15.0 / 15.0

# 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
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

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 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 1272 KB Output is correct
10 Correct 16 ms 1144 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

Subtask #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 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 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 20 ms 1244 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
14 Runtime error 19 ms 1144 KB Execution killed with signal 11 (could be triggered by violating memory limits)
15 Halted 0 ms 0 KB -