Submission #725897

#	Time	Username	Problem	Language	Result	Execution time	Memory
725897		AndrijaM	Bank (IZhO14_bank)	C++14	19 / 100	1079 ms	4420 KiB

bank

#include <bits/stdc++.h>

using namespace std;

int kolku;
int n,m;
int x[20];
int y[20];
int dp[(1<<20)];

bool f(int idx,int mask)
{
    if(idx==n)
    {
        return 1;
    }
    if(mask==kolku)
    {
        return 0;
    }
    if(dp[mask]!=-1)return dp[mask];
    int rez=0;
    for(int i=0;i<(1<<m);i++)
    {
        int sum=0;
        if(i&mask)
        {
            for(int bit=0;bit<m;bit++)
            {
                if(i&mask)
                {
                    if(i&(1<<bit) && mask&(1<<bit))
                    {
                        i^=(1<<bit);
                        int b=bit+1;
                        if(b<m)
                        {
                            i|=(1<<bit);
                        }
                    }
                    else
                    {
                        i^=(1<<bit);
                    }
                }
                else
                {
                    break;
                }
            }
            i--;
        }
        else
        {
            for(int bit=0;bit<m;bit++)
            {
                if(i&(1<<bit))
                {
                    sum+=y[bit];
                }
            }
            if(sum==x[idx])
            {
                int bmask=mask;
                bmask|=i;
                rez|=f(idx+1,bmask);
            }
        }
    }
    return dp[mask]=rez;
}

int main()
{
    ios::sync_with_stdio(0);
    memset(dp,-1,sizeof dp);
    cin>>n>>m;
    kolku=(1<<m)-1;
    for(int i=0;i<n;i++)cin>>x[i];
    for(int i=0;i<m;i++)cin>>y[i];
    if(f(0,0))
    {
        cout<<"YES"<<endl;
        return 0;
    }
    cout<<"NO"<<endl;
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'bool f(int, int)':
bank.cpp:70:20: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   70 |     return dp[mask]=rez;
      |            ~~~~~~~~^~~~

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