unittest
{
	assert( [ "1 2", "3 1", "3" ].parse.expand.solve == "YES" );
	assert( [ "1 2", "3 2", "3" ].parse.expand.solve == "NO" );
	assert( [ "1 2", "3 3", "3" ].parse.expand.solve == "NO" );
}



import std.conv;
import std.math;
import std.range;
import std.stdio;
import std.typecons;

void main()
{
	stdin.byLineCopy.parse.expand.solve.writeln;
}

auto parse( Range )( Range input )
if( isInputRange!Range && is( ElementType!Range == string ) )
{
	auto av = input.front.split.to!( long[] );
	input.popFront;
	auto bw = input.front.split.to!( long[] );
	input.popFront;
	auto t = input.front.to!( long );
	return tuple( av[ 0 ], av[ 1 ], bw[ 0 ], bw[ 1 ], t );
}

auto solve( long a, long v, long b, long w, long t )
{
	return ( abs( a - b ) - ( v - w ) * t <= 0 ) ? "YES" : "NO";
}
