oj.uz

답안 #972988

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
972988 2024-05-01T11:33:03 Z Joshua_Andersson Olympiads (BOI19_olympiads) C++14
100 / 100
 198 ms 1612 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
#define int ll
const int inf = int(1e18);

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> p2;

#define rep(i, high) for (int i = 0; i < high; i++)
#define repp(i, low, high) for (int i = low; i < high; i++)
#define repe(i, container) for (auto& i : container)
#define sz(container) ((int)container.size())
#define all(x) begin(x),end(x)
#define ceildiv(x,y) ((x + y - 1) / (y))

inline void fast() { ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); }

auto Start = chrono::high_resolution_clock::now();
void resettimer() { Start = chrono::high_resolution_clock::now(); }
int elapsedmillis() { return chrono::duration_cast<chrono::milliseconds>(chrono::high_resolution_clock::now() - Start).count(); }

#if _LOCAL
#define assert(x) if (!(x)) __debugbreak()
#endif

typedef bitset<501> bset;
typedef tuple<int, vi, vi, bset> team;
struct compare {
	bool operator()(const team& a, const team& b)
	{
		return get<0>(a) < get<0>(b);
	}
	
};


signed main()
{
	fast();

	int n, k, c;
	cin >> n >> k >> c;

	vvi strength(n, vi(k));
	rep(i, n)
	{
		rep(j, k)
		{
			cin >> strength[i][j];
		}
	}

	priority_queue<team, vector<team>, compare> teams;
	vi start;
	rep(j, k)
	{
		int best = 0;
		int bestv = -1;
		rep(i, n)
		{
			if (strength[i][j] > bestv && find(all(start),i)==start.end())
			{
				best = i;
				bestv = strength[i][j];
			}
		}
		start.push_back(best);
	}
	
	auto getsum = [&](vi& team, vi& team2)
	{
		vi best(k, 0);
		repe(v, team)
		{
			rep(j, k)
			{
				best[j] = max(best[j], strength[v][j]);
			}
		}
		repe(v, team2)
		{
			rep(j, k)
			{
				best[j] = max(best[j], strength[v][j]);
			}
		}
		return accumulate(all(best), 0LL);
	};
	
	vi forced;
	teams.emplace(getsum(start, forced), start, forced, bset());

	set<set<int>> vis;
	rep(it, c-1)
	{
		int s;
		vi curr, forced;
		bset banned;
		tie(s, curr, forced, banned) = teams.top();
		teams.pop();
		set<int> items;
		//repe(v, curr)items.insert(v);
		//repe(v, forced)items.insert(v);
		//assert(vis.find(items) == vis.end());
		vis.insert(items);

		
		while (curr.size())
		{
			vi newcurr(curr);
			bset newbanned(banned);
			newbanned[newcurr.back()] = 1;
			newcurr.pop_back();
			int bestv = -1;
			int best = -1;
			rep(j, n)
			{
				if (find(all(newcurr),j)==newcurr.end()&&!newbanned[j])
				{
					newcurr.push_back(j);
					if (getsum(newcurr, forced)>bestv)
					{
						best = j;
						bestv = getsum(newcurr, forced);
					}
					newcurr.pop_back();
				}
			}
			if (best == -1) break;
			newcurr.push_back(best);
			
			teams.emplace(getsum(newcurr, forced), newcurr, forced, newbanned);
			banned[curr.back()] = 1;
			forced.push_back(curr.back());
			curr.pop_back();
		}
	}

	cout << get<0>(teams.top());

	return 0;
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 344 KB Output is correct
2 Correct 22 ms 344 KB Output is correct
3 Correct 25 ms 596 KB Output is correct
4 Correct 17 ms 344 KB Output is correct

Subtask #2
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 1084 KB Output is correct
2 Correct 3 ms 348 KB Output is correct
3 Correct 12 ms 1096 KB Output is correct
4 Correct 9 ms 1084 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 83 ms 508 KB Output is correct
2 Correct 42 ms 496 KB Output is correct
3 Correct 123 ms 852 KB Output is correct
4 Correct 198 ms 1596 KB Output is correct
5 Correct 73 ms 716 KB Output is correct
6 Correct 4 ms 828 KB Output is correct

Subtask #4
32.0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 344 KB Output is correct
2 Correct 22 ms 344 KB Output is correct
3 Correct 25 ms 596 KB Output is correct
4 Correct 17 ms 344 KB Output is correct
5 Correct 8 ms 1084 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 12 ms 1096 KB Output is correct
8 Correct 9 ms 1084 KB Output is correct
9 Correct 83 ms 508 KB Output is correct
10 Correct 42 ms 496 KB Output is correct
11 Correct 123 ms 852 KB Output is correct
12 Correct 198 ms 1596 KB Output is correct
13 Correct 73 ms 716 KB Output is correct
14 Correct 4 ms 828 KB Output is correct
15 Correct 100 ms 636 KB Output is correct
16 Correct 56 ms 524 KB Output is correct
17 Correct 175 ms 1612 KB Output is correct
18 Correct 187 ms 1352 KB Output is correct
19 Correct 42 ms 344 KB Output is correct