Submission #1165468

#	Time	Username	Problem	Language	Result	Execution time	Memory
1165468		gulmix	Bank (IZhO14_bank)	C++20	100 / 100	500 ms	189340 KiB

bank

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
using ll = long long;
#define all(x) x.begin(), x.end()
#define oset tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update>

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0); 
    //ifstream cin("seating.in");
    //ofstream cout("seating.out");
    ll n, m; cin >> n >> m;
    vector<ll> a(n+1);
    vector<ll> pref(n+1);
    for(int i = 1; i <= n; i++){cin >> a[i]; pref[i] = pref[i-1] + a[i];}
    vector<ll> b(m);
    for(int i = 0; i < m; i++)cin >> b[i];
    vector<ll> s(1<<m);
    for(int i = 0; i < (1 << m); i++){
        for(int j = 0; j < m; j++){
            if(i & (1 << j))continue;
            s[i ^ (1 << j)] = s[i] + b[j];
        }
    }
    vector<vector<ll>> dp(n+1, vector<ll>((1 << m)));
    dp[0][0] = 1;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            for(int k = 0; k < (1 << m); k++){
                if(!dp[i][k])continue;
                if(k & (1 << j))continue;
                if(s[k] + b[j] - pref[i] == a[i+1]){
                    dp[i+1][k ^ (1 << j)] = 1;
                }
                dp[i][k ^ (1 << j)] = 1;
            }
        }
    }
    for(int i = 0; i < (1 << m); i++){
        if(dp[n][i]){
            cout << "YES\n";
            return 0;
        }
    }
    cout << "NO\n";
}

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