<utility>
partial_sort
<algorithm>
placeholders
<functional>
placeholders::_1
<functional>
plus
<functional>
priority_queue
<queue>
ptrdiff_t
<cstddef>
queue
<queue>
rand
<random>
random_device
<random>
range_error
<stdexcept>
ref
<functional>
regex
<regex>
regex_constants
<regex>
regex_error
<regex>
regex_match
<regex>
regex_replace
<regex>
regex_search
<regex>
remove_pointer
<type_traits>
remove_reference
<type_traits>
replace
<algorithm>
replace_copy
<algorithm>
reverse_iterator
<iterator>
right
<iostream>
runtime_error
<stdexcept>
scientific
<iostream>
set
<set>
set_difference
<algorithm>
set_intersection
<algorithm>
set_union
<algorithm>
setfill
<iomanip>
setprecision
<iomanip>