subcrip
/
cp-templates
1
0
Fork 0
Code

Update include.hh 

Signed-off-by: subcrip <contact@subc.rip>
This commit is contained in:
subcrip 2024-05-13 14:59:38 +08:00
parent e32b126f66
commit 06b229bab2
1 changed files with 33 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
include.hh
View File

@ -396,42 +396,38 @@ template <typename Func, typename RandomIt> void sort_by_key(RandomIt first, Ran
template <typename Func, typename RandomIt, typename Compare> void sort_by_key(RandomIt first, RandomIt last, Func extractor, Compare comp) { template <typename Func, typename RandomIt, typename Compare> void sort_by_key(RandomIt first, RandomIt last, Func extractor, Compare comp) {
std::sort(first, last, [&] (auto&& a, auto&& b) { return comp(extractor(a), extractor(b)); }); std::sort(first, last, [&] (auto&& a, auto&& b) { return comp(extractor(a), extractor(b)); });
} }
///////////////////////////////////////////////////////// template <typename T, typename U, typename Iterator_T, typename Iterator_U>
vector<pair<T, U>> zip(Iterator_T a_first, Iterator_T a_last, Iterator_U b_first, Iterator_U b_last) {
#define SINGLE_TEST_CASE vector<pair<T, U>> res;
// #define DUMP_TEST_CASE 7219 auto a_it = a_first;
auto b_it = b_first;
void dump() {} for (; a_it != a_last and b_it != b_last; ++a_it, ++b_it) {
res.emplace_back(*a_it, *b_it);
void dump_ignore() {}
void prep() {}
void solve() {
}
int main() {
#if __cplusplus < 201703L || defined(_MSC_VER) && !defined(__clang__)
assert(false && "incompatible compiler variant detected.");
#endif
untie, cout.tie(NULL);
prep();
#ifdef SINGLE_TEST_CASE
solve();
#else
read(int, t);
for (int i = 0; i < t; ++i) {
#ifdef DUMP_TEST_CASE
if (t < (DUMP_TEST_CASE)) {
solve();
} else if (i + 1 == (DUMP_TEST_CASE)) {
dump();
} else {
dump_ignore();
}
#else
solve();
#endif
} }
#endif return res;
} }
template <typename T, typename U, typename Iterator_T, typename Iterator_U>
vector<pair<T, U>> zip_n(Iterator_T a_first, Iterator_U b_first, size_t n) {
vector<pair<T, U>> res;
auto a_it = a_first;
auto b_it = b_first;
for (; n != 0; ++a_it, ++b_it, --n) {
res.emplace_back(*a_it, *b_it);
}
return res;
}
template <typename T>
class ArithmeticIterator {
public:
using difference_type = ptrdiff_t;
using value_type = T;
private:
value_type value;
public:
ArithmeticIterator(const T& value) : value(value) {}
value_type operator*() const { return value; }
ArithmeticIterator<T>& operator++() { ++value; return *this; }
ArithmeticIterator<T>& operator--() { --value; return *this; }
bool operator==(const ArithmeticIterator<T>& rhs) const { return value == rhs.value; }
};
/////////////////////////////////////////////////////////