Submission #3814158

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Source Code Expand

<?php
$n = fgets(STDIN);
$v = explode(" ",fgets(STDIN));
$a = [];
$b = [];
for($i=0;$i<$n;$i++){
	if($i%2==0){
		$a[] = intval($v[$i]);
	}else{
		$b[] = intval($v[$i]);
	}
}
$a1 = array_count_values($a);
$b1 = array_count_values($b);
$ar = array_flip($a1);
$br = array_flip($b1);
$am = max($a1);
$bm = max($b1);
rsort($a1);
rsort($b1);
if($ar[$am] == $br[$bm]){
	if($am<=$bm){
		if(isset($a1[1])){
			echo count($v)-($a1[1]+max($b1));
		}else{
			echo count($a);
		}
	}else{
		if(isset($b1[1])){
			echo count($v)-(max($a1)+$b1[1]);
		}else{
			echo count($b);
		}
	}
}else{
	echo count($v)-(max($a1)+max($b1));
}

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