Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Baruipur Purba
Table title:
Members of Legislative Assembly
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Election Year </th><th colspan=1 rowspan=1 > Constituency </th><th colspan=1 rowspan=1 > Name of M.L.A. </th><th colspan=1 rowspan=1 > Party Affiliation </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1951 </td><td class="highlighted"  colspan=1 rowspan=1 > Baruipore </td><td class="highlighted"  colspan=1 rowspan=1 > Lalit Kumar Sinha </td><td class="highlighted"  colspan=1 rowspan=1 > Communist Party of India </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > Abdus Shokur </td><td class="highlighted"  colspan=1 rowspan=1 > Indian National Congress </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1957 </td><td colspan=1 rowspan=1 > Baruipur </td><td class="highlighted"  colspan=1 rowspan=1 > Khagendra Kumar Roy Choudhury </td><td class="highlighted"  colspan=1 rowspan=1 > Communist Party of India </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > Gangadhar Naskar </td><td class="highlighted"  colspan=1 rowspan=1 > Communist Party of India </td></tr>
<tr> <td colspan=1 rowspan=1 > 1962 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Sakti Kumar Sarkar </td><td colspan=1 rowspan=1 > Indian National Congress </td></tr>
<tr> <td colspan=1 rowspan=1 > 1967 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Kumud Ranjan Mondal </td><td colspan=1 rowspan=1 > Samyukta Socialist Party </td></tr>
<tr> <td colspan=1 rowspan=1 > 1969 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Kumud Ranjan Mondal </td><td colspan=1 rowspan=1 > Samyukta Socialist Party </td></tr>
<tr> <td colspan=1 rowspan=1 > 1971 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Bimal Mistry </td><td colspan=1 rowspan=1 > Communist Party of India (Marxist) </td></tr>
<tr> <td colspan=1 rowspan=1 > 1972 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Lalit Gayen </td><td colspan=1 rowspan=1 > Indian National Congress </td></tr>
<tr> <td colspan=1 rowspan=1 > 1977 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Hemen Mojumdar </td><td colspan=1 rowspan=1 > Communist Party of India (Marxist) </td></tr>
<tr> <td colspan=1 rowspan=1 > 1982 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Hemen Mojumdar </td><td colspan=1 rowspan=1 > Communist Party of India (Marxist) </td></tr>
<tr> <td colspan=1 rowspan=1 > 1987 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Hemen Mojumdar </td><td colspan=1 rowspan=1 > Communist Party of India (Marxist) </td></tr>
<tr> <td colspan=1 rowspan=1 > 1991 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Sovandeb Chattopadhyay </td><td colspan=1 rowspan=1 > Indian National Congress </td></tr>
<tr> <td colspan=1 rowspan=1 > 1996 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Sovandeb Chattopadhyay </td><td colspan=1 rowspan=1 > Indian National Congress </td></tr>
<tr> <td colspan=1 rowspan=1 > Bye Election,1998 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Dr. Sujan Chakraborty </td><td colspan=1 rowspan=1 > Communist Party of India (Marxist) </td></tr>
<tr> <td colspan=1 rowspan=1 > 2001 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Arup Bhadra </td><td colspan=1 rowspan=1 > All India Trinamool Congress </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Rahul Ghosh </td><td colspan=1 rowspan=1 > Communist Party of India (Marxist) </td></tr>
<tr> <td colspan=4 rowspan=1 > Major boundary changes; constituency renamed as Barupur Purba </td></tr>
<tr> <td colspan=1 rowspan=1 > 2011 </td><td colspan=1 rowspan=1 > Baruipur Purba </td><td colspan=1 rowspan=1 > Nirmal Mandal </td><td colspan=1 rowspan=1 > All India Trinamool Congress </td></tr>
</table>
Question:
What positions did both Khagendra Kumar Roy Choudhury and Gangadhar Naskar win in 1957? 
Answer:
Khagendra Kumar Roy Choudhury and Gangadhar Naskar, both of CPI, won in 1957.