Submission #792317

#	Time	Username	Problem	Language	Result	Execution time	Memory
792317		MODDI	Gondola (IOI14_gondola)	C++17	25 / 100	7 ms	1108 KiB

gondola

#include "gondola.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<long long, long long> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<ll> vl;
int valid(int n, int inputSeq[])
{
	int pos = -1;
	for(int i = 0; i < n; i++){
		if(inputSeq[i] == 1){
			pos = i;
			break;
		}
	}
	bool seq = true;
	int at = 1, lim = pos;
	while(pos < n){
		if(inputSeq[pos] == at){
			pos++;
			at++;
		}
		else{
			seq = false;
			break;
		}
	}
	if(!seq)	return 0;
	pos = 0;
	while(pos < lim){
		if(inputSeq[pos] == at){
			pos++;
			at++;
		}
		else{
			seq = false;
			break;
		}
	}
	if(!seq) return 0;
	return 1;
}

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
	int pos = -1;
	for(int i = 0; i < n; i++){
		if(gondolaSeq[i] >= 1 && gondolaSeq[i] <= n){
			pos = i;
			break;
		}
	}
	if(pos == -1){
		vi arr(n);
		for(int i = 0; i < n; i++)	arr[i] = gondolaSeq[i];
		
		sort(arr.begin(), arr.end());
		int at = 1, j = 0, rez =0;
		for(int i = 0; i < n; i++){
			while(at < arr[i]){
				replacementSeq[j++] = at++;
				rez++; 
			}
			at++;
		}
		return rez;
	}
	else{
		int j = 0, rez = 0;
		int at = gondolaSeq[pos];
		while(at <= n){
				at++;
				pos++;
				pos %= n;
		}
		map<int, bool> vis;
		map<int,int> replace;
		int need = 1;
		for(int i = pos; i < n; i++){
			vis[gondolaSeq[i]] = true;
			replace[gondolaSeq[i]] = need++;
			//cout<<"REPLACE: "<<gondolaSeq[i]<<" "<<need-1<<endl;
		}
		for(int i = 0; i < pos; i++){
			vis[gondolaSeq[i]] = true;
			replace[gondolaSeq[i]] = need++;
			//cout<<"REPLACE: "<<gondolaSeq[i]<<" "<<need-1<<endl;
		}
		at = n + 1;
		bool done[n+1];
		memset(done, false, sizeof done);
		need = 1;
		//cout<<"STARTING: "<<pos<<" "<<vis[at]<<" "<<at<<" "<<replace[at]<<endl;
		for(int i = pos; i < n; i++){
			//cout<<i<<" "<<at<<" "<<gondolaSeq[i]<<endl;
			while(at < gondolaSeq[i]){
				if(vis[at]){
					replacementSeq[j++] = replace[at];
					done[replace[at++]] = true;
					rez++;
				}
				else{
					if(!done[need]){
						done[need] = true;
						replacementSeq[j++]=need;
						rez++;
					}
					replacementSeq[j++] = at++;
					rez++;
				}
			}
			need++;
			if(at == gondolaSeq[i])
			{
				if(!done[replace[gondolaSeq[i]]]){
					done[replace[gondolaSeq[i]]] = true;
					replacementSeq[j++] = replace[gondolaSeq[i]];
					rez++;
				}
				at++;
			}
		}
		for(int i = 0; i < pos; i++){
			while(at < gondolaSeq[i]){
				if(vis[at]){
					replacementSeq[j++] = replace[at];
					done[replace[at++]] = true;
					rez++;
				}
				else{
					if(!done[need]){
						done[need] = true;
						replacementSeq[j++]=need;
						rez++;
					}
					replacementSeq[j++] = at++;
					rez++;
				}
			}
			need++;
			if(at == gondolaSeq[i])
			{
				if(!done[replace[gondolaSeq[i]]]){
					done[replace[gondolaSeq[i]]] = true;
					replacementSeq[j++] = replace[gondolaSeq[i]];
					rez++;
				}
				at++;
			}
		}
		//cout<<"ANS: "<<endl;
		return rez;
	}
}

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

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: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10