pan><span class="identifier">boost</span><span class="special">::</span><span class="identifier">begin</span><span class="special">(</span><span class="identifier">v</span><span class="special">),</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">end</span><span class="special">(</span><span class="identifier">v</span><span class="special">),</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">begin</span><span c