Submission #1011351

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011351		Double_Slash	Languages (IOI10_languages)	C++17	Compilation error	0 ms	0 KiB

lang

#include "lang.h"
#include "grader.h"
#include <bits/stdc++.h>
 
using namespace std;
#define debug(x) [&] { auto _x = x; cerr << __LINE__ << ": " << #x << " = " << _x << endl; return _x; }()
 
double magic(double x) {
	return pow(abs(x), 1);
}
 
template <typename T>
struct Data : map<T, int> {
	int tot = 0;

	double operator&(const Data<T> &o) const {
		double ret = 0;
		for (auto [k, v]: *this) {
			ret += magic((double) v / tot - (o.count(k) ? (double) o.at(k) / o.tot : 0));
		}
		for (auto [k, v]: o) {
			if (not count(k)) ret += magic((double) v / o.tot);
		}
		return ret;
	}
 
	void operator+=(const Data<T> &o) {
		for (auto &[k, v]: o) {
			(*this)[k] += v;
		}
		tot += o.tot;
	}};
 
struct Profile {
	Data<int> single;
 
	Profile() {}
 
	Profile(int *arr) {
		for (int i = 0; i < 100; ++i) {
			single[arr[i]]++;
		}
		single.tot = 100;
	}
 
	double operator&(const Profile &o) const {
		return single & o.single;
	}
 
	void operator+=(const Profile &o) {
		single += o.single;
	}
} profile[56];
 
void excerpt(int *E) {
	Profile p(E);
	pair<double, int> mn{1e18, 0};
	for (int i = 0; i < 56; ++i) {
		mn = min(mn, {p & profile[i], i});
	}
	int ans = language(mn.second);
	profile[ans] += p;
}

Compilation message (stderr)

lang.cpp: In instantiation of 'double Data<T>::operator&(const Data<T>&) const [with T = int]':
lang.cpp:47:21:   required from here
lang.cpp:22:17: error: no matching function for call to 'count(std::tuple_element<0, std::pair<const int, int> >::type&)'
   22 |    if (not count(k)) ret += magic((double) v / o.tot);
      |            ~~~~~^~~
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from lang.cpp:3:
/usr/include/c++/10/bits/stl_algo.h:4077:5: note: candidate: 'template<class _IIter, class _Tp> typename std::iterator_traits< <template-parameter-1-1> >::difference_type std::count(_IIter, _IIter, const _Tp&)'
 4077 |     count(_InputIterator __first, _InputIterator __last, const _Tp& __value)
      |     ^~~~~
/usr/include/c++/10/bits/stl_algo.h:4077:5: note:   template argument deduction/substitution failed:
lang.cpp:22:17: note:   candidate expects 3 arguments, 1 provided
   22 |    if (not count(k)) ret += magic((double) v / o.tot);
      |            ~~~~~^~~
In file included from /usr/include/c++/10/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from lang.cpp:3:
/usr/include/c++/10/pstl/glue_algorithm_defs.h:101:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator, class _Tp> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, typename std::iterator_traits<_II>::difference_type> std::count(_ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, const _Tp&)'
  101 | count(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value);
      | ^~~~~
/usr/include/c++/10/pstl/glue_algorithm_defs.h:101:1: note:   template argument deduction/substitution failed:
lang.cpp:22:17: note:   candidate expects 4 arguments, 1 provided
   22 |    if (not count(k)) ret += magic((double) v / o.tot);
      |            ~~~~~^~~