Submission #902400

#	Time	Username	Problem	Language	Result	Execution time	Memory
902400		0xZero	Bank (IZhO14_bank)	C++17	100 / 100	166 ms	4596 KiB

bank

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin>>n>>m;
    vector<int> a(n), b(m);
    int sa=0, sb=0;
    for(int i=0;i<n;i++)cin>>a[i], sa+=a[i];
    for(int i=0;i<m;i++)cin>>b[i], sb+=b[i];
    if(sa>sb)return cout<<"NO\n", 0;
    else if(sa<sb){
        n++;
        a.push_back(sb-sa);
    }
    vector<int> pref(n+1, 0);
    for(int i=0;i<n;i++)pref[i+1]=pref[i]+a[i];
    int dp[1<<m]={0};
    for(int i=1;i<(1<<m);i++){
        int sum=0;
        for(int j=0;j<m;j++)if(i&(1<<j))sum+=b[j];
        for(int j=0;j<m;j++){
            if(i&(1<<j)){
                int p=dp[i^(1<<j)];
                int s=pref[p];
                if(sum-s==a[p])dp[i]=max(dp[i], p+1);
                else dp[i]=max(dp[i], p);
            }
        }
    }
    if(dp[(1<<m)-1]==n)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