Submission #677976

#	Time	Username	Problem	Language	Result	Execution time	Memory
677976		Ahmed57	Bank (IZhO14_bank)	C++14	0 / 100	37 ms	82388 KiB

bank

#include <bits/stdc++.h>

using namespace std;
vector<int> v[20];
int n,m;int ob[20],su[20];
int dp[20][(1<<20)];
int solve(int i,int mask){
    if(i==n){
        return 1;
    }
    if(dp[i][mask]!=-1)return dp[i][mask];
    int ans = 0;
    for(auto j:v[i]){
        if(j&mask==0){
            ans|=solve(i+1,mask|j);
            if(ans==1)break;
        }
    }
    return dp[i][mask] = ans;
}
int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    cin>>n>>m;
    for(int i = 0;i<n;i++)cin>>ob[i];
    for(int i = 0;i<m;i++)cin>>su[i];
    for(int i = 0;i<n;i++){
        for(int mask = 1;mask<(1<<m);mask++){
            long long sum = 0;
            for(int j = 0;j<m;j++){
                if(mask&(1<<j))sum+=su[j];
            }
            if(sum==ob[i]){
                v[i].push_back(mask);
            }
        }
    }
    memset(dp,-1,sizeof dp);
    cout<<(solve(0,0)?"YES\n":"NO\n");
}

Compilation message (stderr)

bank.cpp: In function 'int solve(int, int)':
bank.cpp:14:18: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   14 |         if(j&mask==0){
      |              ~~~~^~~

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