Submission #1286159

#	Time	Username	Problem	Language	Result	Execution time	Memory
1286159		xosqedemrufo	Bank (IZhO14_bank)	C++20	71 / 100	1096 ms	584 KiB

bank

//Author RufatM
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<vector<pii>> vvp;
typedef vector<bool> vb;
typedef vector<string> vs;
#define fastio ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define endl '\n'
#define pb push_back
#define pf push_front
#define eb emplace_back
#define ff first
#define ss second
#define all(x) begin(x),end(x)
#define rall(x) rbegin(x),rend(x)
#define mt19937_64 mt_rand(chrono::steady_clock::now().time_since_epoch().count())
#define ordered_set tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>
template<typename T> bool isPrime(T n){if(n<=1)return false;if(n<=3)return true;if(n%2==0 or n%3==0)return false;for(T i=5;i*i<=n;i+=6)if(n%i==0 or n%(i+2)==0)return false;return true;}
const int MOD=1e9+7;
const int INF=1000000007;
const ll LINF=1e18+7;
const int LOG=21;
const int MAXN=300005;
const int MAXM=200005;
int n,m;
int a[25],b[25];
bool used[25];
bool dfs(int idx){
    if(idx==n){
        return true;
    }
    for(int mask=1;mask<(1<<m);mask++){
        int sum = 0;
        bool ok = true;
        for(int j=0;j<m;j++){
            if(mask&(1<<j)){
                if(used[j]){
                    ok = false;
                }
                sum += b[j];
            }
        }
        if(!ok){
            continue;
        }
        if(sum == a[idx]){
            for(int j=0;j<m;j++){
                if(mask&(1<<j)){
                    used[j] = true;
                }
            }
            if(dfs(idx+1)){
                return true;
            }
            for(int j=0;j<m;j++){
                if(mask&(1<<j)){
                    used[j] = false;
                }
            }
        }
    }
    return false;
}
signed main(){
    fastio;
    #ifndef ONLINE_JUDGE
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    #endif
    int t=1;
    //cin >> t;
    while(t--){
        cin >> n >> m;
        for(int i=0;i<n;i++){
            cin >> a[i];
        }
        for(int i=0;i<m;i++){
            cin >> b[i];
        }
        sort(a,a+n);
        if(dfs(0)){
            cout << "YES";
        }
        else{
            cout << "NO";
        }
    }
}

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