
import std.algorithm;
import std.stdio;
import std.string;

void main()
{
	auto s = readln.strip;
	writeln( solve( s ) );
}

int solve( in string s )
{
	return 700 + s.map!( a => ( a == 'o' ) ? 100 : 0 ).sum;
}

unittest
{
	assert( solve( "oxo" ) == 900 );
	assert( solve( "ooo" ) == 1000 );
	assert( solve( "xxx" ) == 700 );
}
