Submission #899549

#	Time	Username	Problem	Language	Result	Execution time	Memory
899549		nasir_bashirov	Bank (IZhO14_bank)	C++11	100 / 100	86 ms	8792 KiB

bank

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
 
#include <bits/stdc++.h>
using namespace std;
 
#define db long double
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pii>
#define vll vector<pll>
#define endl '\n'
#define all(x) x.begin(), x.end()
#define fastio\
    ios_base::sync_with_stdio(0);\
    cin.tie(0);\
    cout.tie(0)\
  
const int inf = -1e9;
int a[25], b[25], n, m;
vii dp((1 << 20) + 5, {0, 0});

signed main(){
    fastio;
    cin >> n >> m;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
    }
    for(int i = 1; i <= m; i++){
        cin >> b[i];
    }
    for(int mask = 1; mask < (1 << m); mask++){
        for(int j = 0; j < m; j++){
            if((1 << j) & mask){
                int out = mask ^ (1 << j);
                if(a[dp[out].first + 1] == dp[out].second + b[j + 1]){
                    if(dp[mask].first < dp[out].first + 1)  dp[mask] = {dp[out].first + 1, 0};
                }
                else{
                    if(dp[mask].first <= dp[out].first)  dp[mask] = {dp[out].first, dp[out].second + b[j + 1]};
                }
            }
        }
    }
    int mx = 0;
    for(int mask = 0; mask < (1 << m); mask++){
        mx = max(dp[mask].first, mx);
    }
    if(mx == n) cout << "YES";
    else   cout << "NO";
}

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