Submission #1281795

#	Time	Username	Problem	Language	Result	Execution time	Memory
1281795		quan606303	Bank (IZhO14_bank)	C++20	27 / 100	1095 ms	816 KiB

bank

/*
 * @Author: RMQuan 
 * @Date: 2025-10-22 10:47:26 
 * @Last Modified by: RMQuan
 * @Last Modified time: 2025-10-22 11:03:07
 */
/*idea : 



*/
#include <bits/stdc++.h>
bool M1;
#define int long long
#define ll long long
#define INTMAX INT_MAX
#define INTMIN INT_MIN
#define LONGMAX LLONG_MAX
#define LONGMIN LLONG_MIN
#define fi first
#define se second
#define memfull(a,b) memset(a,b,sizeof(a));
#define endl '\n'
#define TASK "BANK"
#define file() if (fopen(TASK".inp","r")){freopen(TASK".inp","r",stdin); freopen(TASK".out","w",stdout);}
using namespace std;
const int MOD=1e9+7;
int n,m;
bool dp[25][(1<<20)+5];
int a[25],b[25];
int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    file();
    cin>>n>>m;
    for (int i=1;i<=n;i++)cin>>a[i];
    for (int i=0;i<=m;i++)cin>>b[i];
    dp[0][0]=1;
    for (int i=1;i<=n;i++)
    {
        for (int mask1=0;mask1<(1<<m);mask1++)
        {
            int sum=0;  
            for (int j=0;j<m;j++)
            {
                if (mask1&(1<<j))sum+=b[j];
            }
            if (sum==a[i])
            {
                for (int premask=0;premask<(1<<m);premask++)if (dp[i-1][premask]&&((premask&mask1)==0))dp[i][mask1]=true;
            }
        }
    }
    bool ans=0;
    for (int mask=0;mask<(1<<m);mask++)ans|=dp[n][mask];
    cout<<(ans?"YES":"NO");
    bool M2;
    cerr<<"-------------------------------------------------"<<endl;
    cerr<<"Time : "<<clock()<<" ms"<<endl;
    cerr<<"Memory : "<<abs(&M2-&M1)/1024/1024<<" MB"<<endl;
    cerr<<"-------------------------------------------------"<<endl;
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int32_t main()':
bank.cpp:25:50: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 | #define file() if (fopen(TASK".inp","r")){freopen(TASK".inp","r",stdin); freopen(TASK".out","w",stdout);}
      |                                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:36:5: note: in expansion of macro 'file'
   36 |     file();
      |     ^~~~
bank.cpp:25:81: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 | #define file() if (fopen(TASK".inp","r")){freopen(TASK".inp","r",stdin); freopen(TASK".out","w",stdout);}
      |                                                                          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:36:5: note: in expansion of macro 'file'
   36 |     file();
      |     ^~~~

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