Submission #1017117

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017117		daviedu	Bank (IZhO14_bank)	C++17	0 / 100	7 ms	348 KiB

bank

#include <bits/stdc++.h>
using namespace std;
 
#define fastio ios_base::sync_with_stdio(0); cin.tie(0)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ll long long
 
struct P{
    ll x, y;
};
 
void dbg_out() { cerr << endl; }
template <typename H, typename... T>
void dbg_out(H h, T... t) { cerr << ' ' << h; dbg_out(t...); }
#define dbg(...) { cerr << #__VA_ARGS__ << ':'; dbg_out(__VA_ARGS__); }
 
signed main(){
    fastio;
    int n, m;
    cin >> n >> m;
    vector<int> pay (n), notes (m);
    for (auto &a: pay) cin >> a;
    for (auto &a: notes) cin >> a;
    vector<int> dp (1 << m, -1), r (1 << m);
    bool ans=false;
    for (int i=0; i<n; i++){
        for (int mask=1; mask<(1<<m); mask++){
            for (int j=0; j<m; j++){
                if (!(mask & (1 << j))) continue;
                int p = mask ^ (1 << j);
                if (dp[p] < i-1) continue;
                int v = r[p] + notes[j];
                if (dp[p] == i-1 && v == pay[i]){
                    dp[mask] = i;
                    r[mask] = 0;
                    break;
                }
                else if (dp[p] == i){
                    dp[mask] = i;
                    r[mask] = v;
                    break;
                }
            }
            if (dp[mask] == n-1) ans = true;
        }
    }
 
    cout << (ans? "YES" : "NO") << '\n';
}

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