Submission #1064466

#	Time	Username	Problem	Language	Result	Execution time	Memory
1064466		wood	Gondola (IOI14_gondola)	C++17	10 / 100	7 ms	1780 KiB

gondola

#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define pb push_back

int valid(int n, int inputSeq[])
{
	vi small; set<int> big;
	for(int i = 0; i<n; i++){
		if(inputSeq[i]<n) small.pb(inputSeq[i]); 
		else big.insert(inputSeq[i]);
	}
	int bad = 0;
	for(int i = 0; i<small.size()-1; i++){
		bad+=small[i+1]<small[i];
	}
	bad+=small[n-1]>small[0];
	if(bad>1) return 0;
	if(big.empty()) return 1;
	int mex = n;
	while(big.count(mex)) {
		mex++;
	}
	if(mex<big.size()+n-1) 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:15:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int i = 0; i<small.size()-1; i++){
      |                 ~^~~~~~~~~~~~~~~
gondola.cpp:25:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  if(mex<big.size()+n-1) return 0;
      |     ~~~^~~~~~~~~~~~~~~

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