Submission #788094

#	Time	Username	Problem	Language	Result	Execution time	Memory
788094		Chal1shkan	Colouring a rectangle (eJOI19_colouring)	C++14	20 / 100	2075 ms	6536 KiB

colouring

//Bismillahir-Rahmanir-Rahim

# include <bits/stdc++.h>
 
# define pb push_back
# define ff first
# define ss second
# define nl "\n"
# define sz(x) ((int)(x).size())
# define all(x) (x).begin(), (x).end()
# define deb(x) cerr << #x  << " = " << x << endl; 
# define pll pair <ll, ll>
# define pii pair <int, int>
# define int long long

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
 
const ll maxn = 5e5 + 7;
const ll inf = 2e18 + 0;
const ll mod = 1e9 + 7;
const ll dx[] = {-1, 1, 0, 0};
const ll dy[] = {0, 0, -1, 1};

using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n, m;
int a[maxn];
int b[maxn];
bool used[555][555];
bool was[555];

void ma1n (/* SABR */)
{
	cin >> n >> m;
	for (int i = 0; i < n + m - 1; i++)
	{
		cin >> a[i];
	}
	for (int i = 0; i < n + m - 1; ++i)
	{
		cin >> b[i];
	}
	int sz = n + m - 1;
	ll ans = inf;
	for (int mask = 0; mask < (1LL << sz); ++mask)
	{
		for (int i = 0; i < n; ++i)
		{
			for (int j = 0; j < m; ++j)
			{
				used[i][j] = 0;
			}
		}
		for (int i = 0; i < n + m - 1; ++i)
		{
			was[i] = 0;
		}
		ll cur = 0;
		for (int i = 0; i < sz; ++i)
		{
			if (mask & (1LL << i))
			{
				cur += b[i];
				for (int j = 0; j < n; ++j)
				{
					if (i - j >= 0 &&  i - j < m)	
					{
						used[j][i - j] = 1;
					}
				}	
			}
		}
		for (int i = 0; i < n; ++i)
		{
			for (int j = 0; j < m; ++j)
			{
				if (!used[i][j])
				{
					//st.insert(i - j + m - 1);
					was[i - j + m - 1] = 1;
				}
			}
		}
		for (int i = 0; i < sz; ++i)
		{
			if (was[i]) cur += a[i];
		}
		ans = min(ans, cur);
//		cout << mask << ' ' << cur << nl;
	}
	cout << ans << nl;
}
 
signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
//  freopen("file.in", "r", stdin);
//  freopen("file.out", "w", stdout);
    int ttt = 1;
//    cin >> ttt;
    for (int test = 1; test <= ttt; ++test)
    {
//      cout << "Case " << test << ":" << '\n';
        ma1n();
    }
    return 0;
}

// 998batrr | BbIWEJI 3A TObOU!!!
// tourist  | BbIWEJI 3A TObOU!!!

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 20
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20