Submission #1127528

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127528		Elwino008	Bank (IZhO14_bank)	C++20	19 / 100	247 ms	436 KiB

bank

//#pragma GCC optimize ("O3")
#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define pb push_back
#define F first
#define S second
#define ll long long
#define int ll
#define pii pair<int, int>
#define io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define M_PI 3.14159265358979323846
#define all(v) v.begin(), v.end()
#define pss pair<string, string>
#define no cout<<"NO"<<endl;
#define yes cout<<"YES"<<endl;
#define imp cout<<-1<<endl;
#define was cout<<ans<<endl;
#define flu cout.flush();
#define Endl endl

const int N = 200009;
const int mod = 1e9+7;

int yx=0;
int m, n;
vector<int>b, a;
map<int, int>used;
vector<int>p;

void f(int ind, vector<int>q, int sz){
    if(ind==m){
        yes;
        exit(0);
    }
    int k=b[ind], cem=0, cnt=0;
    for(int i=0; i<(1<<sz); i++){
        cem=0;
        cnt=0;
        for(int j=0; j<sz; j++){
            if(i&(1<<j)){
                cem+=q[j];
                used[j]++;
                cnt++;
            }
        }
        if(cnt<(m-ind-1)){
            continue;
        }
        if(cem==k){
            for(int j=0; j<sz; j++){
                if(used[j]==0){
                    p.pb(q[j]);
                }
            }
            f(ind+1, p, cnt);
        }
        for(int j=0; j<sz; j++){
            used[j]=0;
        }
        p.clear();
    }
}

void solve(){
    cin>>m>>n;
    for(int i=0; i<m; i++){
        int x;
        cin>>x;
        b.pb(x);
    }
    for(int i=0; i<n; i++){
        int x;
        cin>>x;
        a.pb(x);
    }
    sort(all(a));
    sort(all(b));
    if(n==m){
        if(a==b){
            yes;
        }
        else{
            no;
        }
        return;
    }
    f(0, a, n);
    no;
}

signed main(){
    io;
    int t=1;
    //cin>>t;
    while(t--){
        solve();
    }
}

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