Submission #494832

#	Time	Username	Problem	Language	Result	Execution time	Memory
494832		Ronin13	Bank (IZhO14_bank)	C++14	52 / 100	1071 ms	6348 KiB

bank

#include<bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
#define f first
#define s second
using namespace std;

void solve(){
    int n;cin>>n;
    int m;cin>>m;
    int a[n+1],b[m+1];
    for(int i=1;i<=n;i++)cin>>a[i];
    for(int i=1;i<=m;i++)cin>>b[i];
    bool dp[n+1][(1<<m)+1];
    int sum[(1<<m)+1];
    for(int i=0;i<(1<<m);i++){
        for(int j=0;j<=n;j++)j==0?dp[j][i]=1:dp[j][i]=0;
    }
    for(int i=0;i<(1<<m);i++){
        sum[i]=0;
        for(int j=0;j<m;j++){
            if(i&(1<<j))sum[i]+=b[j+1];
        }
    }
    for(int i=1;i<=n;i++){
        for(int mask=0;mask<(1<<m);mask++){
            for(int s=mask;;s=(s-1)&mask){
                int x=mask^s;
                if(sum[x]==a[i])dp[i][mask]|=dp[i-1][s];
                if(s==0)break;
            }
        }
    }
    if(dp[n][(1<<m)-1])cout<<"YES\n";
    else cout<<"NO\n";
}

int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    int test=1;//cin>>test;a
    while(test--)solve();
}

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