Submission #887021

#	Time	Username	Problem	Language	Result	Execution time	Memory
887021		a_l_i_r_e_z_a	Bank (IZhO14_bank)	C++17	71 / 100	1059 ms	10588 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

#pragma GCC optimize("Ofast")
#pragma GCC optimize("fast-math")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#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], sm[maxB];
bool dp[maxn][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 = 1; mask < (1ll << m); mask++){
        int bit = 31 - __builtin_clz(mask);
        sm[mask] = sm[mask ^ (1ll << bit)] + b[bit];
    }
    dp[0][0] = 1;
    for(int i = 0; i < n; i++){
        for(int mask = 0; mask < (1ll << m); mask++){
            if(!dp[i][mask]) continue;
            for(int nas = 0; nas < (1ll << m); nas++){
                if(nas & mask) continue;
                if(sm[nas] == a[i]) dp[i + 1][nas | mask] = 1;
            }
        }
    }
    for(int mask = 0; mask < (1ll << m); mask++){
        if(dp[n][mask]){
            cout << "YES\n";
            return 0;
        }
    }
    cout << "NO\n";

    return 0;
}   

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