Submission #1000575

#	Time	Username	Problem	Language	Result	Execution time	Memory
1000575		niwrad	Bank (IZhO14_bank)	C++17	100 / 100	179 ms	4700 KiB

bank

#include <bits/stdc++.h>

using namespace std;


int main() {
    //freopen("guard.in", "r", stdin);
    //freopen("guard.out", "w", stdout);
    int n, m;
    cin >> n >> m;
    vector<int> a(n);
    vector<int> b(m);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for (int i = 0; i < m; i++) {
        cin >> b[i];
    }
    vector<int> dp((1 << m));
    dp[0] = 1;
    for (int i = 0; i < (1 << m); i++) {
        if (dp[i] == 1) {
            int sum = 0;
            for (int j = 0; j < m; j++) {
                if (i & (1 << j)) {
                    sum += b[j];
                }
            }
            int ind = 0;
            while (ind < n && sum >= a[ind]) {
                sum -= a[ind];
                ind++;
            }
            if (ind == n) {
                continue;
            }
            int r = a[ind] - sum;
            for (int j = 0; j < m; j++) {
                if (!(i & (1 << j)) && r >= b[j]) {
                    dp[i | (1 << j)] = 1;
                }
            }
        }
    }
    int a_s = 0;
    for (int i = 0; i < n; i++) {
        a_s += a[i];
    }
    bool con = false;
    for (int i = 0; i < (1 << m); i++) {
        if (dp[i] == 1) {
            int sum = 0;
            for (int j = 0; j < m; j++) {
                if (i & (1 << j)) {
                    sum += b[j];
                }
            }
            if (a_s == sum) {
                con = true;
            }
        }
    }
    if (con) {
        cout << "YES\n";
    } else {
        cout << "NO\n";
    }
}

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