Submission #1245810

#	Time	Username	Problem	Language	Result	Execution time	Memory
1245810		t6stks	Bank (IZhO14_bank)	C++20	100 / 100	784 ms	28048 KiB

bank

#include <bits/stdc++.h>
#define F first
#define S second
#define SZ(x) ((int)(x).size())
#define ALL(x) x.begin(), x.end()

using namespace std;
using ll = long long;
using vi = vector<int>;
using vl = vector<ll>;
using vvi = vector<vi>;
using vvl = vector<vl>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using vii = vector<pii>;
using vll = vector<pll>;

void sol() {
    int n, m;
    cin >> n >> m;
    vi a(n), b(m);
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < m; i++) cin >> b[i];
    vector<vector<int>> vec(1001);
    for (int i = 0; i < (1 << m); i++) {
        int sum = 0;
        for (int j = 0; j < m; j++) {
            if (i >> j & 1) sum += b[j];
        }
        if (sum <= 1000)
            vec[sum].push_back(i);
    }
    vector<vector<unsigned char>> dp(n + 1, vector<unsigned char>(1 << m, 0));
    dp[0][0] = 1;
    for (int i = 0; i < n; i++) {
        for (int last: vec[a[i]]) {
            int uwu = ((1 << m) - 1) & (~last);
            for (int ms = uwu;; ms = (ms - 1) & uwu) {
                dp[i + 1][ms ^ last] |= dp[i][ms];
                if (ms == 0) break;
            }
        }
    }
    for (int i = 0; i < (1 << m); i++) {
        if (dp[n][i]) return cout << "YES\n", void();
    }
    cout << "NO\n";
}

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    sol();
}

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