Submission #887027

#	Time	Username	Problem	Language	Result	Execution time	Memory
887027		a_l_i_r_e_z_a	Bank (IZhO14_bank)	C++17	100 / 100	85 ms	8668 KiB

bank

// In the name of Allah
// Khodaya khodet komak kon
// Hope is last to die
// Let's go
// Hello today I decided to solve at least 4 great problems per day
// 2023/11/24

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define pb push_back
#define S second
#define F first
#define mp make_pair
#define smax(x, y) (x) = max((x), (y))
#define smin(x, y) (x) = min((x), (y))
#define all(x) (x).begin(), (x).end()
#define set_dec(x) cout << fixed << setprecision(x);
#define sz(x) ((int)(x).size())
#define file_io freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout);

const int maxn = 20 + 5, maxB = (1ll << 20);
const int inf = 1e9 + 7;
int a[maxn], b[maxn];
pii dp[maxB];

int32_t main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n, m; cin >> n >> m;
    for(int i = 0; i < n; i++) cin >> a[i];
    for(int i = 0; i < m; i++) cin >> b[i];
    for(int mask = 0; mask < (1ll << m); mask++) dp[mask].F = -1;
    dp[0].F = 0;
    for(int mask = 0; mask < (1ll << m); mask++){
        if(dp[mask].F == -1) continue;
        if(dp[mask].F == n && dp[mask].S == 0){
            cout << "YES\n";
            return 0;
        }
        for(int i = 0; i < m; i++){
            if((1ll << i) & mask) continue;
            if(dp[mask].S + b[i] > a[dp[mask].F]) continue;
            else if(dp[mask].S + b[i] == a[dp[mask].F]){
                dp[mask | (1ll << i)] = mp(dp[mask].F + 1, 0);
            }
            else{
                dp[mask | (1ll << i)] = mp(dp[mask].F, dp[mask].S + b[i]);
            }
        }
    }
    cout << "NO\n";

    return 0;
}   

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