Submission #1182157

#	Time	Username	Problem	Language	Result	Execution time	Memory
1182157		ziyad_alharbi	Bank (IZhO14_bank)	C++20	100 / 100	341 ms	30856 KiB

bank

#include<bits/stdc++.h>
using namespace std;
const int N=(1<<21)+5;
int a[25],b[25],n,m;
bool dp[25][N],vs[25][N];
vector<array<int,2>>v[25];
void cal(int x=0,int sm=0,int vl=0)
{
    if(x==m)
    {
        for(int i=0;i<n;i++)if(a[i]==sm)v[i].push_back({sm,vl});
        return;
    }
    cal(x+1,sm+b[x],vl+(1<<x));
    cal(x+1,sm,vl);
}
bool f(int x,int ms)
{
    if(x==n)return 1;
    if(vs[x][ms])return dp[x][ms];
    bool bl=0;
    for(auto [i,j]:v[x])if((j&ms)==j&&i==a[x])bl|=f(x+1,ms-j);
    vs[x][ms]=1;
    return dp[x][ms]=bl;
}
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>n>>m;
    for(int x=0;x<n;x++)cin>>a[x];
    for(int x=0;x<m;x++)cin>>b[x];
    cal();
    if(f(0,(1<<m)-1))cout<<"YES\n";
    else cout<<"NO\n";
    return 0;
}

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