Submission #1245157

#	Time	Username	Problem	Language	Result	Execution time	Memory
1245157		votranngocvy	Bank (IZhO14_bank)	C++20	100 / 100	86 ms	8520 KiB

bank

#include <bits/stdc++.h>
using namespace std;

#define pii pair<int,int>
#define fi first
#define se second
const int N = (1 << 20) + 5;
int a[25],b[25];
pii dp[N];

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n,m;
    cin >> n >> m;
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < m; i++) cin >> b[i];
    for (int mask = 0; mask < (1 << m); mask++) dp[mask] = {-1,-1};
    dp[0] = {0,0};
    for (int mask = 0; mask < (1 << m); mask++) {
        if (dp[mask].fi == -1) continue;
        if (dp[mask].fi == n) {
            cout << "YES\n";
            return 0;
        }
        for (int i = 0; i < m; i++) {
            if (mask >> i & 1) continue;
            int nwMask = mask | (1 << i);
            pii nw = {-1,-1};
            if (dp[mask].se + b[i] == a[dp[mask].fi]) 
                nw = {dp[mask].fi + 1,0};
            else if (dp[mask].se + b[i] < a[dp[mask].fi]) 
                nw = {dp[mask].fi,dp[mask].se + b[i]};
            if (nw.fi != -1) dp[nwMask] = max(dp[nwMask],nw);
        }
    }
    cout << "NO\n";
}

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