Program excursion;
var
N,K, S : LongInt;
R : AnsiString;
begin
{
uncomment the two following lines if you want to read/write from files
assign(input, 'input.txt'); reset(input);
assign(output, 'output.txt'); rewrite(output);
}
ReadLn(N);
ReadLn(K);
ReadLn(S);
R := '';
if K*N>=S then R:='YES'
else R:='NO';
WriteLn(R);
end.
UHJvZ3JhbSBleGN1cnNpb247Cgp2YXIKICAgIE4sSywgUyA6IExvbmdJbnQ7CiAgICBSICAgICAgIDogQW5zaVN0cmluZzsKCmJlZ2luCnsKICAgIHVuY29tbWVudCB0aGUgdHdvIGZvbGxvd2luZyBsaW5lcyBpZiB5b3Ugd2FudCB0byByZWFkL3dyaXRlIGZyb20gZmlsZXMKICAgIGFzc2lnbihpbnB1dCwgICdpbnB1dC50eHQnKTsgIHJlc2V0KGlucHV0KTsKICAgIGFzc2lnbihvdXRwdXQsICdvdXRwdXQudHh0Jyk7IHJld3JpdGUob3V0cHV0KTsKfQoKICAgIFJlYWRMbihOKTsKCiAgICBSZWFkTG4oSyk7CgogICAgUmVhZExuKFMpOwoKICAgIFIgOj0gJyc7CgogICBpZiBLKk4+PVMgdGhlbiBSOj0nWUVTJwogICAgICAgICAgICAgZWxzZSBSOj0nTk8nOwogICAgV3JpdGVMbihSKTsKCmVuZC4K