Submission #1025749

#	Time	Username	Problem	Language	Result	Execution time	Memory
1025749		socpite	Gondola (IOI14_gondola)	C++17	55 / 100	12 ms	2384 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;

const int maxn = 3e5+5;

bool vis[maxn];

int valid(int n, int inputSeq[])
{
	int dist = -1;
	for(int i = 0; i < n; i++)inputSeq[i]--;
	for(int i = 0; i < n; i++){
		if(vis[inputSeq[i]])return 0;
		vis[inputSeq[i]] = 1;
		if(inputSeq[i] < n){
			int d = (i + n - inputSeq[i])%n;
			if(dist == -1)dist = d;
			else if(dist != d)return 0;
		}
	}
	return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	vector<pair<int, int>> vec;
	int dist = 0;
	for(int i = 0; i < n; i++){
		gondolaSeq[i]--;
		if(gondolaSeq[i] < n){
			dist = (gondolaSeq[i] - i + n)%n;
		}
		else {
			vec.push_back({gondolaSeq[i], i});
		}
	}
	int crr = 0;
	sort(vec.begin(), vec.end());
	for(auto v: vec){
		replacementSeq[crr++] = (v.second + dist)%n + 1;
		while(crr+n <= v.first){
			replacementSeq[crr] = crr + n;
			crr++;
		}
	}
	return crr;
}

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

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