Submission #1228975

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228975		dhuyyyy	Bank (IZhO14_bank)	C++20	100 / 100	102 ms	16844 KiB

bank

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

using ll = long long;
using ii = pair<ll, ll>;
using pii = pair<int,ii>;
using aa = array<int,3>;

const int N = 21;
const int M = 1e6+5;
const int INF = 1e9;
const int MOD = 1e9+7;

int n,m,a[N],b[N],num[(1 << N)],pre[(1 << N)];
ii dp[(1 << N)];
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    cin >> n >> m;
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= m; i++) cin >> b[i];
    for (int i = 0; i < (1 << m); i++) pre[i] = -1;
    pre[0] = num[0] = 0;
    for (int i = 0; i < (1 << m); i++){
        for (int j = 0; j < m; j++){
            if (!(i & (1 << j))) continue;
            int before = (i & ~(1 << j));
            if (pre[before] == -1) continue;
            int cur = b[j+1] + num[before];
            if (cur < a[pre[before]+1]){
                pre[i] = pre[before];
                num[i] = cur;
            } else if (cur == a[pre[before] + 1]){
                pre[i] = pre[before] + 1;
            }
        }
        if (pre[i] == n) return cout << "YES",0;
    }
    cout << "NO";
    return 0;
}

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