Submission #127716

#	Time	Username	Problem	Language	Result	Execution time	Memory
127716		Dr_Cow	Gondola (IOI14_gondola)	C++14	20 / 100	15 ms	1144 KiB

gondola

#include <bits/stdc++.h>
#include "gondola.h"

int valid(int n, int inputSeq[]){
	int ip=-1,N[100010];
	bool tf[250010];
	for (int i=0;i<n;i++)
		if (tf[inputSeq[i]]) return 0;
		else tf[inputSeq[i]]=true;
	for (int i=0;i<n;i++){
		if (inputSeq[i]<=n){
			ip=i;break;
		}
	}
	
	if (ip==-1) return 1;
	else {
		N[ip]=inputSeq[ip];
		for (int i=ip+1;i<n;i++) {
			N[i]=N[i-1]+1;
			if (N[i]>n) N[i]-=n;
		}
		for (int i=ip-1;i>=0;i--){
			N[i]=N[i+1]-1;
			if (N[i]<=0) N[i]+=n;
		}
	}
	for (int i=0;i<n;i++)
		if (inputSeq[i]<=n && inputSeq[i]!=N[i]) 	return 0;
  return 1;

}
//----------------------

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
  return -2;
}

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

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

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:8:21: warning: 'tf[<unknown>]' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if (tf[inputSeq[i]]) return 0;
       ~~~~~~~~~~~~~~^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 0 / 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