Submission #218863

#	Time	Username	Problem	Language	Result	Execution time	Memory
218863		Kenzo_1114	Gondola (IOI14_gondola)	C++17	55 / 100	29 ms	3448 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;
const int MAXN = 100010;

int correct[MAXN], pos[3 * MAXN], ans[3 * MAXN];
bool marc1[3 * MAXN];

void calc(int n, int seq[])
{
	int id = -1;
	for(int i = 0; i < n; i++)
		if(seq[i] <= n)
		{	id = i; break;	}

	if(id != -1)	correct[id] = seq[id];
	else	id = 0,	correct[id] = 1;

	for(int i = id + 1; i < n; i++)
	{	
		correct[i] = correct[i - 1] + 1;
		if(correct[i] > n)	correct[i] = 1;
	}

	for(int i = id - 1; i >= 0; i--)
	{
		correct[i] = correct[i + 1] - 1;
		if(correct[i] < 1)	correct[i] = n;
	}

//	for(int i = 0; i < n; i++)
//		printf("correct[%d] = %d\n", i, correct[i]);
}

int valid(int n, int seq[])
{
	calc(n, seq);

	for(int i = 0; i < n; i++)
	{
		if(seq[i] <= n && correct[i] != seq[i])	return 0;
		if(seq[i] > n && marc1[seq[i]])	return 0;
		marc1[seq[i]] = true;
	}

	return 1;
}

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	calc(n, gondolaSeq);

	for(int i = 0; i < 3 * MAXN; i++)	pos[i] = -1;

	int mx = n;
	for(int i = 0; i < n; i++)
		if(gondolaSeq[i] > n)
			pos[gondolaSeq[i]] = i, mx = max(mx, gondolaSeq[i]);

	for(int i = mx - 1; i > n; i--)
		if(pos[i] == -1)	
			pos[i] = pos[i + 1];

	int l = 0;	
	for(int i = n + 1; i <= mx; i++)
	{
		replacementSeq[l] = correct[pos[i]];
		correct[pos[i]] = i;
		l++;
	}
/*
	printf("l = %d\n", l);
	for(int i = 0; i < l; i++)	printf("%d ", replacementSeq[i]);
	printf("\n");
*/
	return l;
}

int countReplacement(int n, int inputSeq[])
{
	return -1;
}

/*
int N, SEQ[MAXN];

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

	for(int i = 0; i < N; i++)	scanf("%d", &SEQ[i]);

	printf("valid = %d\n", valid(N, SEQ));

	replacement(N, SEQ, ans);
}
*/

• 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