Submission #448304

#	Time	Username	Problem	Language	Result	Execution time	Memory
448304		Lobo	Bank (IZhO14_bank)	C++17	100 / 100	149 ms	8592 KiB

bank

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

const long long INFll = (long long) 1e18 + 10;
const int INFii = (int) 1e9 + 10;
typedef long long ll;
typedef int ii;
typedef double dbl;
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()

#define maxn 21
#define maxpow 2200000

ii n, m, a[maxn], b[maxn];
pair<ii,ii> dp[maxpow];

int main() {
    ios::sync_with_stdio(false); cin.tie(0);

    //freopen("in.in", "r", stdin);
    //freopen(".out", "w", stdout);

    cin >> n >> m;

    for(ii i = 0; i < n; i++) cin >> a[i];

    for(ii i = 0; i < m; i++) cin >> b[i];

    for(ii mask = 1; mask < (1<<m); mask++) {
        pair<ii,ii> ans = mp(0,0);

        for(ii j = 0; j < m; j++) {
            if((mask&(1<<j)) == 0) continue;

            ii i = dp[mask^(1<<j)].fr;
            ii x = dp[mask^(1<<j)].sc;

            if(b[j] + x == a[i]) 
                ans = max(ans, mp(i+1,0));
            else if(b[j] + x < a[i]) 
                ans = max(ans, mp(i,b[j]+x));
        }

        dp[mask] = ans;
        if(ans.fr == n) {
            cout << "YES" << endl;
            return 0;
        }
    }

    cout << "NO" << endl;
    return 0;

}

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