Submission #91097

#	Time	Username	Problem	Language	Result	Execution time	Memory
91097		Aydarov03	Bank (IZhO14_bank)	C++14	71 / 100	1083 ms	8060 KiB

bank

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

int a[25] , b[25];
vector <int> v[20005];
int n , m;

string bin(int a)
{
    string s = "";
    while( a > 0 )
    {
        s += a % 2 + '0';
        a /= 2;
    }
    while( s.size() < m )s += '0';
    return s;
}


void rec( int id = 1 , int OR = 0)
{

    for(auto c : v[ a[id] ] )
    {
        if( (c & OR) == 0 )
        {
            if( id == n )
            {
                cout << "YES";
                exit(0);
            }


            rec( id+1 , OR | c );
        }
    }
}



main()
{
    cin >> n >> m;

    for(int i = 1; i <= n; i++)
        cin >> a[i];
    for(int i = 1; i <= m; i++)
        cin >> b[i];



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

    for(int i = 1; i <= n; i++)
    {
        if( v[a[i]].size() == 0 )
            return cout << "NO" , 0;
    }
//
//    for(int i = 1; i <= n; i++)
//    {
//        cout << a[i] << endl;
//        for(auto c : v[ a[i] ])cout << bin(c) << endl;
//    }
//    puts("******");cout<<endl<<endl;

    rec();


    cout << "NO";
}

Compilation message (stderr)

bank.cpp: In function 'std::__cxx11::string bin(int)':
bank.cpp:16:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while( s.size() < m )s += '0';
            ~~~~~~~~~^~~
bank.cpp: At global scope:
bank.cpp:42:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^

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