This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
//Be Name KHODA
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define pb push_back
#define pp pop_back
#define cl clear
#define bg begin
#define lb lower_bound
#define ub upper_bound
#define arr(x) array<int , x>
#define endl '\n'
int n , m;
vector<int> a , b;
int dp[(1 << 20)][2];
void f(){
dp[0][0] = 0 , dp[0][1] = 0;
for(int msk = 0 ; msk < (1 << m) ; msk++){
for(int j = 0 ; j < m ; j++){
if((msk >> j) & 1){
int lst = dp[msk ^ (1 << j)][0];
int d = dp[msk ^ (1 << j)][1] + b[j];
if(d < a[lst]){
dp[msk][0] = lst;
dp[msk][1] = d;
}else if(d == a[lst]){
dp[msk][0] = lst + 1;
dp[msk][1] = 0;
}
}
}
if(dp[msk][0] == n){
cout << "YES";
exit(0);
}
}
cout << "NO";
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cin >> n >> m;
for(int i = 0 ; i < n ; i++){
int d;
cin >> d;
a.pb(d);
}
for(int i = 0 ; i < m ; i++){
int d;
cin >> d;
b.pb(d);
}
for(int msk = 0 ; msk < (1 << m) ; msk++){
dp[msk][0] = -1;
dp[msk][1] = 0;
}
f();
}
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