Submission #1272579

#	Time	Username	Problem	Language	Result	Execution time	Memory
1272579		kiteyu	Bank (IZhO14_bank)	C++20	100 / 100	82 ms	8624 KiB

bank

#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
using ll=long long;
const int N=20;
int n,m,a[N+5],b[N+5];
pair<int,int>dp[(1<<N)];
vector<int>g[N+5];

bool cmp(int x,int y){
    return (int)g[x].size()>(int)g[y].size();
}

int main(){
//    freopen("bank.in","r",stdin);
//    freopen("bank.out","w",stdout);
    cin>>n>>m;
    for(int i=0;i<n;++i) cin>>a[i];
    for(int i=0;i<m;++i) cin>>b[i];

    for(int mask=0;mask<(1<<m);++mask)
        dp[mask]={-1,0};
    dp[0]={0,0};
    for(int mask=0;mask<(1<<m);++mask){

        if(dp[mask].fi==-1) continue;
        if(dp[mask].fi==n) return cout<<"YES",0;
//        cout<<mask<<' '<<dp[mask].fi<<' '<<dp[mask].se<<":\n";
        for(int j=0;j<m;++j)
            if(!((mask>>j)&1)){
                int nw=(mask|(1<<j));
                pair<int,int>cur={dp[mask].fi,dp[mask].se+b[j]};
                if(cur.se>a[dp[mask].fi]) continue;
                if(cur.se==a[dp[mask].fi])cur.se=0,cur.fi++;
//                cout<<nw<<','<<cur.fi<<','<<cur.se<<'='<<dp[nw].fi<<','<<dp[nw].se<<'\n';
                if(dp[nw].fi<cur.fi) dp[nw]=cur;
            }
    }
    cout<<"NO";
    return 0;
}

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