#include <algorithm>
#include <fstream>
#include <iomanip>
#include <cmath>
#include <set>
using namespace std;

ifstream cin( "cmap.in" );
ofstream cout( "cmap.out" );

#define x first
#define y second
set<pair<int, int>> s;

long long dis( pair<int, int> A, pair<int, int> B ) {
	return (long long)( A.x - B.x ) * ( A.x - B.x ) + (long long)( A.y - B.y ) * ( A.y - B.y );
}

const int MAX = 1e5 + 2;
pair<int, int> v[ MAX ];
int n;

int main()
{
	cin >> n;
	for( int i = 0; i < n; i++ )
		cin >> v[ i ].x >> v[ i ].y;

	sort( v, v + n, []( pair<int, int> A, pair<int, int> B ) {
			return A.x < B.x;
		} );

	long long pp;
	long long dMin = dis( v[ 0 ], v[ 1 ] );
	for( int i = 0; i < n; i++ ) {
		for( auto it = s.lower_bound( { v[ i ].y - dMin, 0 } ); it != s.end() && (*it).y <= v[ i ].y + dMin; it++ ) {
			if( v[ i ].x - (*it).x > dMin )
				s.erase( it );
			else if( ( pp = dis( v[ i ], (*it) ) ) < dMin )
				dMin = pp;
		}
		s.insert( v[ i ] );
	}

	cout << fixed << setprecision( 6 );
	cout << (double)sqrt( dMin ) << '\n';
    return 0;
}