Submission #404137

#	Time	Username	Problem	Language	Result	Execution time	Memory
404137		fadi57	Bank (IZhO14_bank)	C++14	100 / 100	680 ms	94380 KiB

bank

#include<bits/stdc++.h>
using namespace std;
const int mx=30;
typedef long long ll;
int inf=1e9+10;
const int mod=1e9+7;
int a[30];
int b[30];
int x[mx];
int n,m;
vector<int>sums[20005];
map<int,int>mp;
int dp[21][(1<<20)+2];
int solve(int i,int mask){

if(i==n){


        return 1;

}
int &ret=dp[i][mask];
  if(ret!=-1){

    return ret;
   }
ret=0;
for(auto it:sums[a[i]]){

    if((it&mask)==it){
        ret=max(solve(i+1,mask^it),ret);
    }
}
return ret;

}


int main(){

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 i=0;i<(1<<m);i++){
   int sum=0;
   for(int j=0;j<m;j++){
    if(i&(1<<j)){
        sum+=b[j];
    }
   }
   sums[sum].push_back(i);

 }
 memset(dp,-1,sizeof(dp));
// cout<<sums[3][0];

if(solve(0,(1<<m)-1)){

cout<<"YES";
   }else{
   cout<<"NO";

   }





 }

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