Submission #518818

#	Time	Username	Problem	Language	Result	Execution time	Memory
518818		DragosC1	Bank (IZhO14_bank)	C++17	100 / 100	120 ms	8516 KiB

bank

#include <iostream>
using namespace std;

int n, m;
int a[21];
int b[21];
int dp[(1 << 20)];
int sum[(1 << 20)];
bool ok;

void read() {
    int i;
    cin >> n >> m;
    for (i = 0; i < n; i++)
        cin >> a[i];
    for (i = 0; i < m; i++)
        cin >> b[i];
}

void solve() {
    int i, j;
    dp[0] = 0;
    for (i = 0; i < (1 << m) && !ok; i++) {
        for (j = 0; j < m && !ok; j++) {
            if (i & (1 << j))
                continue;
            if (sum[i] + b[j] < a[dp[i]] && dp[i] >= dp[i | (1 << j)]) {
                sum[i | (1 << j)] = sum[i] + b[j];
                dp[i | (1 << j)] = dp[i];
            }
            else if (sum[i] + b[j] == a[dp[i]] && dp[i] + 1 > dp[i | (1 << j)]) {
                dp[i | (1 << j)] = dp[i] + 1;
                if (dp[i | (1 << j)] == n)
                    ok = 1;
                sum[i | (1 << j)] = 0;
            }
        }
    }
    
}

void output() {
    cout << (ok == 1 ? "YES\n" : "NO\n");
}

int main() {
    read();
    solve();
    output();
    return 0;
}

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