/in/foo.cc: In function 'void pp(int)':
/in/foo.cc:52:33: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
   for(int j=0;j<num[0][i];j++)if(ans[0][i][j]!=-1)
                                 ^
/in/foo.cc: In function 'void dd(int)':
/in/foo.cc:71:33: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
   for(int j=0;j<num[1][i];j++)if(ans[1][i][j]!=-1)
                                 ^