Submission #1032078

#	Time	Username	Problem	Language	Result	Execution time	Memory
1032078		tolbi	Gondola (IOI14_gondola)	C++17	55 / 100	32 ms	5120 KiB

gondola

#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
int valid(int n, int inputSeq[])
{
	map<int,int> mp;
	int p = -1;
	for (int i = 0; i < n; ++i)
	{
		if (mp[inputSeq[i]]) return 0;
		mp[inputSeq[i]]++;
	}
	for (int i = 0; i < n; i++){
		if (inputSeq[i]<=n){
			p=i;
			break;
		}
	}
	if (p==-1) return 1;
	for (int i = 0; i < n; i++){
		if (inputSeq[i]>n) continue;
		int step = i-p;
		if (i<p) step = n-p+i;
		int a = inputSeq[p]-1;
		a+=step;
		a%=n;
		a++;
		if (inputSeq[i]!=a) return 0;
	}
	return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	pair<int,int> v[n];
	for (int i = 0; i < n; ++i)
	{
		v[i]={gondolaSeq[i],i};
	}
	sort(v,v+n);
	int cnt = 0;
	int p = 0;
	for (int i = 0; i < n; i++){
		if (gondolaSeq[i]<=n){
			p=i-gondolaSeq[i]+1;
			if (p<0) p+=n;
			break;
		}
	}
	for (int i = 0; i < n; i++){
		if (v[i].first<=n) continue;
		int lel = v[i].second-p+1;
		if (v[i].second<p) lel = n-p+v[i].second+1;
		while (cnt<v[i].first-n) {
			replacementSeq[cnt]=lel;
			lel=cnt+n+1;
			cnt++;
		}
	}
	return cnt;
}

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

int countReplacement(int n, int inputSeq[])
{
	return -3;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10