Submission #413899

#	Time	Username	Problem	Language	Result	Execution time	Memory
413899		bigDuck	Bank (IZhO14_bank)	C++14	0 / 100	1079 ms	7076 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];


bool v[20010];
bool vm[21][(1ll<<20)-1 ];
vector<int> msk[21];
vector<pii> g[20010];
int sum[21];


void knapsack_graph(){
v[0]=true;
for(int i=1; i<=m; i++){
    for(int sum=0; sum<=(20000-b[i]); sum++){
        if( (v[sum]==true)){
            g[sum].pb({sum+b[i], i});
            v[sum+b[i]]=true;
        }
    }
}




return;
}








void dfs(int s, int ac, int pt){
    if(s==sum[pt]){
        if(vm[pt][ac]!=true){
            vm[pt][ac]=true;
            msk[pt].pb(ac);
        }
        return;
    }
    for(auto pr:g[s]){
        int u=pr.ft, tp=pr.sc;
        if( ((ac&(1ll<<(tp-1) ))==0) && (u<=sum[pt]) ){
            dfs(u, (ac|(1ll<<(tp-1) )), pt);
        }
    }
    return;
}


void search_graph(){
msk[0].pb(0);

for(int i=0; i<n; i++){
    for(int ac:msk[i]){
        dfs(sum[i], ac, i+1);
    }
}

return;
}





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];
}
knapsack_graph();
search_graph();

/*
for(int ac:msk[n]){
    cout<<ac<<"\n";
}
*/

if(msk[n].size()>0){
    cout<<"YES\n";
}
else{
    cout<<"NO\n";
}





return 0;
}

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