Submission #1011425

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011425		Double_Slash	Languages (IOI10_languages)	C++17	90 / 100	8805 ms	4800 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; }()
using pint = pair<int, int>;
 
double magic(double x) {
	return abs(x);
}
 
template <typename T, int MAX>
struct Data : map<T, int> {
	int tot = 0;
  set<pair<int, T>> inv;
 
	double operator&(const Data<T, MAX> &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 this->count(k)) ret += magic((double) v / o.tot);
		}
		return ret;
	}
 
	void operator+=(const Data<T, MAX> &o) {
		for (auto &[k, v]: o) {
          inv.erase({(*this)[k], k});
			inv.emplace((*this)[k] += v, k);
		}
		tot += o.tot;
      while (inv.size() > MAX) {
          tot -= inv.begin()->first;
          this->erase(inv.begin()->second);
        inv.erase(inv.begin());
}
	}};
 
struct Profile {
Data<int, 50> sing;
  Data<pint, 100> doub;
  Data<array<int, 3>, 70> trip;
 
	Profile() {}
 
	Profile(int *arr) {
		for (int i = 0; i < 100; ++i) {
          sing[arr[i]]++;
          if (i) doub[{arr[i - 1], arr[i]}]++;
          if (i >=2) trip[{arr[i - 2], arr[i - 1], arr[i]}];
		}
      for (auto [k, v]: doub) doub.inv.emplace(v, k);
      sing.tot = 100;
      doub.tot = 99;
      trip.tot = 98;
	}
 
	double operator&(const Profile &o) const {
		return (sing & o.sing) + (doub & o.doub) + (trip & o.trip);
	}
 
	void operator+=(const Profile &o) {
      sing += o.sing;
doub += o.doub;
      trip += o.trip;
	}
} 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;
}

• Subtask 1: 30 / 30
• Subtask 2: 60 / 80