Submission #413945

#	Time	Username	Problem	Language	Result	Execution time	Memory
413945		bigDuck	Bank (IZhO14_bank)	C++14	100 / 100	239 ms	1496 KiB

bank

#include<bits/stdc++.h>
using namespace std;
#define INIT  ios_base :: sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define mp make_pair
#define pb push_back
#define ft first
#define sc second
#define ll long long
#define pii pair<int, int>
#define count_bits __builtin_popcount
//#define int ll

int n, m, a[21], b[21];



int sum[21];
//bool vm[21][(1ll<<20)-1 ];
//vector<int> msk[21];
bool res=false;
bool v[2000000];


void complete(int ac, int ind, int pt, int x){
if(v[ac]){
    return;
}
if(x>sum[pt]){
    return;
}
if(x==sum[pt]){
    if(pt==n){res=true; return;}
    complete(ac, 1, pt+1, x);
    return;
}

if(ind>20){
    return;
}

complete(ac, ind+1, pt, x);

if( (ac&(1ll<<(ind-1)) )==0 ){
    complete(ac|(1ll<<(ind-1)), ind+1, pt, x+b[ind]);
}
v[ac]=true;
return;
}


void build(){
    complete(0, 1, 1, 0);
}




int32_t main(){
INIT
cin>>n>>m;
for(int i=1; i<=n; i++){
    cin>>a[i];
    sum[i]=sum[i-1];
    sum[i]+=a[i];
}


for(int i=1; i<=m; i++){
    cin>>b[i];
}

build();


/*
cout<<msk[n].size()<<"sz\n";
for(auto c:msk[n]){
    cout<<c<<"\n";
}
*/

if(res){
    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