Submission #1089278

#	Time	Username	Problem	Language	Result	Execution time	Memory
1089278		vjudge1	Bank (IZhO14_bank)	C++17	19 / 100	6 ms	604 KiB

bank

#include <bits/stdc++.h>
//qwerty47924692
using namespace std;
using ll = long long;
#define f first
#define s second
const ll N=3e5+29;
ll n,m,a[N],b[N],ans,p[N],used[N],total[N];
void f(ll x,ll sum,ll i){
    if(x==m){
        if(sum==a[i]&&i<n){
            for(ll i=1;i<=m;i++)total[i]^=used[i];
            f(0,0,i+1);
            for(ll i=1;i<=m;i++)total[i]^=used[i];
        }
        if(i==n&&sum==a[n]){
            ans=1;
        //    for(ll i=1;i<=m;i++)cout<<used[i]<<' ';
            return;
        }
        return;
    }
    x++;
    if(!total[i])used[x]=1;
    if(!total[i]&&sum<b[x]<=a[i])f(x,sum+b[x],i);
    used[x]=0;
    f(x,sum,i);
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin>>n>>m;
    if(n>m){
        cout<<"NO";
        return 0;
    }
    for(ll i=1;i<=n;i++){
        cin>>a[i];
    }
    for(ll i=1;i<=m;i++){
        cin>>b[i];
        p[i]=i;
    }

    f(0,0,1);
    cout<<(ans ? "YES" : "NO");
}

Compilation message (stderr)

bank.cpp: In function 'void first(ll, ll, ll)':
bank.cpp:25:22: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
   25 |     if(!total[i]&&sum<b[x]<=a[i])f(x,sum+b[x],i);
      |                   ~~~^~~~~

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