Submission #1226200

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226200		chuchucharles	Bank (IZhO14_bank)	C++20	71 / 100	1093 ms	8216 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define debug(x) cerr << #x << ' ' << x << '\n';
int n, m, a[25], b[25], sum[1 << 20];
bool dp[1 << 20][20];
vector <int> adj[25];
signed main () {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
    for (int i = 0; i < m; i++)
        cin >> b[i];
    for (int mask = 0; mask < (1 << m); mask++)
        for (int i = 0; i < m; i++)
            if (mask >> i & 1) sum[mask] += b[i];
    for (int i = 1; i <= n; i++)
        for (int mask = 1; mask < (1 << m); mask++)
            if (sum[mask] == a[i]) adj[i].push_back (mask);
    dp[0][0] = true;
    for (int i = 1; i <= n; i++) {
        for (int mask = 1; mask < (1 << m); mask++) {
            for (int sub : adj[i]) {
                if ((mask | sub) != mask) continue;
                if (dp[mask ^ sub][i - 1]) {
                    dp[mask][i] = true;
                    break;
                }
            }
            if (i == n && dp[mask][i]) {
                cout << "YES";
                return 0;
            }
        }
    }
    cout << "NO";
}

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