Submission #765578

#	Time	Username	Problem	Language	Result	Execution time	Memory
765578		LeaRouse	Bank (IZhO14_bank)	C++14	100 / 100	99 ms	8532 KiB

bank

#include<bits/stdc++.h>
#define fastio ios_base::sync_with_stdio(0); cin.tie(0);
#define ll long long
#define ff first
#define ss second
using namespace std;
const int MAX = 25;
int A[MAX],B[MAX];
pair<int,int>dp[(1<<21)+5];
void go(){
    int n,m;    cin>>n>>m;
    for(int i=1;i<=n;i++) cin>>A[i];
    for(int i=1;i<=m;i++) cin>>B[i];
    for(int i=0;i<(1<<m);i++){
        dp[i]={-1,-1};
    }
    bool ans=false;
    dp[0]={1,0};
    for(int i=0;i<(1<<m);i++){
        int mask=i;
        for(int j=1;j<=m;j++){
            if( (mask&( 1<< (j-1) )) ){
                int ant=mask ^ (1<<(j-1));
                if(dp[ant].ff==-1) continue;
                int a=dp[ant].ss+B[j];
                int b=A[dp[ant].ff];
                if(a<b){
                    if(dp[ant].ff>dp[mask].ff)  dp[mask]={dp[ant].ff,a};
                }
                else if(a==b){
                    if(dp[ant].ff+1>dp[mask].ff) dp[mask]={dp[ant].ff+1,0};
                }   
            }
        }
        if(dp[mask].ff==n+1)    ans=true;
    }
    if(ans) cout<<"YES"<<endl;
    else    cout<<"NO"<<endl;
}

int main(){
    fastio;
    go();
    return 0;
}

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