Submission #858793

#	Time	Username	Problem	Language	Result	Execution time	Memory
858793		phongcd	Bank (IZhO14_bank)	C++14	0 / 100	2 ms	348 KiB

bank

#include <bits/stdc++.h>
#define ll long long
#define ld long  double
#define ull unsigned long long
#define ii pair <int, int>
#define ill pair <ll, ll>
#define ild pair <ld, ld>
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define file "test"
using namespace std;
const int N = 22;
const ll MOD = 998244353;
const ll INF = 1e18;
const ll base = 311;
const int BLOCK_SIZE = 400;
 
int n, m;
int a[N], b[N], f[N][1 << N];
vector <int> h[1002];

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #ifndef ONLINE_JUDGE
        freopen(file".inp","r",stdin); freopen(file".out","w",stdout);
    #endif
    
    cin >> n >> m;
    int ma = 0;
    for (int i = 1; i <= n; i ++) 
        cin >> a[i], ma = max(ma, a[i]);
    for (int i = 0; i < m; i ++) cin >> b[i];

    for (int s = 1; s < (1 << m); s ++) {
        int sum = 0;
        for (int j = 0; (1 << j) <= s; j ++)
            if (s >> j & 1) sum += b[j];
        if (sum <= ma) h[sum].push_back(s);
    }

    f[0][0] = 1;
    for (int i = 1; i <= n; i ++)
        for (int s = 0; s < (1 << m); s ++) {
            if (!f[i - 1][s]) continue;
            for (int j: h[a[i]]) 
                if ((s & j) == 0) f[i][s | j] = 1;
        }

    for (int j = 1; j < (1 << m); j ++)
        if (f[n][j]) {
            cout << "YES";
            return 0;
        }
    cout << "NO";
}
/*
     /\_/\ zzZ
    (= -_-)
    / >u  >u
*/

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:26:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen(file".inp","r",stdin); freopen(file".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:26:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen(file".inp","r",stdin); freopen(file".out","w",stdout);
      |                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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