Submission #1109745

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109745		PhamKhanhHuyen	Bank (IZhO14_bank)	C++14	71 / 100	1052 ms	3400 KiB

bank

#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define fi first
#define se second
using namespace std;

int n, m;
const int maxn = 1000;
int a[21], b[21];
vector<int>tmp[21];
int main()
{
  //  freopen("BANK.INP", "r", stdin);
   // freopen("BANK.OUT", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> n >> m;
    for(int i = 1; i <= n; i++) cin >> a[i];
    for(int j = 0; j < m; j++) cin >> b[j];
    vector<vector<bool>>dp(21, vector<bool>((1 << 20), false));
    dp[0][0] = true;
    for(int i = 1; i <= n; i++)
    {
        for(int mask = 1; mask < (1 << m); mask++)
        {
            int res = 0;
            for(int j = 0; j < m; j++)
            {
                if(mask & (1 << j))
                    res += b[j];
            }
            if(res == a[i])
            {
                tmp[i].pb(mask);
            }
        }
    }
    for(int i = 1; i <= n; i++)
    {
        //cout << "test: " << i << '\n';
        for(int j : tmp[i])
        {
           // cout << j << ' ';
            for(int mask = 0; mask < (1 << m); mask++)
            {
                if(!(j & mask) && dp[i - 1][mask]) {
                        dp[i][j|mask] = 1;
                        if(i == n) {
                            cout << "YES";
                            return 0;
                        }
                }
            }
        }
       // cout << '\n';
    }
    cout << "NO";

}

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29