#include <stdio.h>

int x[ 100010 ];
int n;

int main()
{
	int maxx = -10, left, right;

	FILE *fin = fopen( "xormax.in", "r" );
	fscanf( fin, "%d", &n );
	for( int i = 1; i <= n; i++ ) {
		fscanf( fin, "%d", &x[ i ] );

		x[ i ] ^= x[ i - 1 ];
		for( int j = i - 1; j >= 0; j-- )
			if( maxx < ( x[ i ] ^ x[ j ] ) ) {
				maxx = ( x[ i ] ^ x[ j ] );
				left = j + 1;
				right = i;
			}
	}
	fclose( fin );

	FILE *fout = fopen( "xormax.out", "w" );
	fprintf( fout, "%d %d %d\n", maxx, left, right );
 	fclose( fout );
 	return 0;
}