Submission #936140

#	Time	Username	Problem	Language	Result	Execution time	Memory
936140		Youssif_Elkadi	Bank (IZhO14_bank)	C++17	100 / 100	376 ms	63424 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 1e3 + 5, inf = 1e9, mod = 1e9 + 7;
int n, m;
int dp[21][(1 << 20)];
vector<int> musks[N];
vector<int> people, cash;
int main()
{
    ios_base::sync_with_stdio(0), cin.tie(NULL), cout.tie(NULL);
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    cin >> n >> m;
    people.resize(n), cash.resize(m);
    for (int i = 0; i < n; i++)
        cin >> people[i];
    for (int i = 0; i < m; i++)
        cin >> cash[i];
    for (int i = 0; i < (1 << m); i++)
    {
        int sum = 0;
        for (int j = 0; j < m; j++)
            if (i & (1 << j))
                sum += cash[j];
        if (sum <= 1000)
            musks[sum].push_back(i);
    }
    for (auto &v : musks[people[0]])
        dp[0][v] = 1;
    for (int i = 0; i < n - 1; i++)
    {
        for (int j = 0; j < (1 << m); j++)
        {
            if (dp[i][j] == 0)
                continue;
            for (auto v : musks[people[i + 1]])
                if ((j & v) == 0)
                    dp[i + 1][j | v] |= dp[i][j];
        }
    }
    for (int i = 0; i < (1 << m); i++)
        if (dp[n - 1][i])
            return cout << "YES\n", 0;
    cout << "NO\n";
}
/*
YES
*/

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29