Submission #1319643

#	Time	Username	Problem	Language	Result	Execution time	Memory
1319643		yessimkhan	Bank (IZhO14_bank)	C++20	100 / 100	254 ms	2140 KiB

bank

#include <bits/stdc++.h>

#define ll long long
#define ent '\n'
#define pb push_back
#define all(x) x.begin(),x.end()
#define PRaim_bek_abi ios_base::sync_with_stdio(0);cin.tie(0);

using namespace std;

const int N = 2e1+5;
const int MOD = 1e9+7;

int n , m , a[N] , b[N];
set<int> dp[1005][N];

multiset<int>s;

void get(int i , int x){
    
    if (i == n + 1){
        cout << "YES";
        exit(0);
    }

    if (x == 0){
        get(i + 1 , a[i + 1]);
        return;
    }

    for (auto to : dp[x][i]){
        auto it = s.find(to);
        if (it == s.end()) continue;

        s.erase(it);
        get(i , x - to);
        s.insert(to);
    }

}

void easy(){
    
    cin >> n >> m;

    for (int i = 1; i <= n; i++){
        cin >> a[i];
    }

    for (int i = 1; i <= m; i++){
        cin >> b[i];
        s.insert(b[i]);
    }

    sort(b + 1 , b + 1 + m);


    for (int k = 1; k <= n; k++){
        dp[0][k].insert(0);
        for (int i = 1; i <= m; i++){
            for (int j = a[k]; j >= b[i]; j--){
                if (dp[j - b[i]][k].size() == 0) continue;
                dp[j][k].insert(b[i]);
            }
        }

        if (dp[a[k]][k].size() == 0){
            cout << "NO";
            return;
        }
        
    }
    
    get(1 , a[1]);
    
    cout << "NO";
}

signed main(){

    PRaim_bek_abi

    int t=1;
    //cin>>t;
    while(t--) easy();
}

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