Submission #1033433

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033433		bytecode_1234	Bank (IZhO14_bank)	C++14	0 / 100	2 ms	604 KiB

bank

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


int main()
{
	#ifndef ONLINE_JUDGE
    freopen("input.txt","r",stdin);
    freopen("output.txt","w",stdout);
    #endif

     ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    
    	ll n,m;
    	cin>>n>>m;
    	vector<ll> v(n);
    	for(ll i=0;i<n;i++)
    	{
    		cin>>v[i];
    	}
    	vector<ll> v1(m);
    	for(ll i=0;i<m;i++)
    	{
    		cin>>v1[i];
    	}

    	
    	vector<vector<ll>> dp1(n);
    	ll f=0;
    	for(ll i=0;i<n;i++)
    	{
    		for(ll j=0;j<=pow(2,m);j++)
    		{
    			ll sum=0;
    			for(ll k=0;k<m;k++)
    			{
    				if(j&(1<<k))
    				{
    					sum+=v1[k];
    				}
    			}

    			if(sum==v[i])
    			{
    				dp1[i].push_back(j);
    			}
    		}

    		if(dp1[i].size()==0)
    		{
    			f=1;
    			break;
    		}
    	}


    	if(f)
    	{

    		cout<<"NO"<<"\n";
    	}
    	else if(n==1)
    	{
    		if(dp1.size()>0)
    		{
    			cout<<"YES"<<"\n";
    		}
    		else
    		{
    			cout<<"NO"<<"\n";
    		}
    	}
    	else
    	{
    		vector<vector<ll>> dp(n+1,vector<ll>(pow(2,m),-1));
    	    for(ll i=0;i<pow(2,m);i++)
    	    {
    	    	dp[0][i]=0;
    	    }
    	

    	

    		for(ll i=1;i<=n;i++)
    		{
    			for(ll j=0;j<pow(2,m);j++)
    			{
    				for(ll k=0;k<dp1[i-1].size();k++)
    				{
    					if((j&dp1[i-1][k])==dp1[i-1][k])
    					{
    						if(dp[i-1][j^(dp1[i-1][k])]==0)
    						{
    							dp[i][j]=0;
    							break;
    						}
    					}
    				}
    			}
    		}

    		if(dp[n][pow(2,m)-1]==0)
    		{
    			cout<<"YES"<<"\n";
    		}
    		else
    		{
    			cout<<"NO"<<"\n";
    		}
    	}
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:91:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |         for(ll k=0;k<dp1[i-1].size();k++)
      |                    ~^~~~~~~~~~~~~~~~
bank.cpp:9:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     freopen("input.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("output.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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