Submission #1017145

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017145		daviedu	Bank (IZhO14_bank)	C++17	19 / 100	83 ms	8644 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__); }

const int MAXN = 1<<20;

int dp[MAXN], r[MAXN];
 
signed main(){
    fastio;
    memset(dp, -1, sizeof(dp));
    int n, m;
    cin >> n >> m;
    vector<int> pay (n), notes (m);
    for (auto &a: pay) cin >> a;
    for (auto &a: notes) cin >> a;
    bool ans=false;
    for (int mask=1; mask<(1<<m); mask++){
        for (int i=0; i<m; i++){
            if (!(mask & (1 << i))) continue;
            int p = mask ^ (1 << i);
            if (dp[p] < dp[mask]) continue;

            int goal = dp[mask]+1;
            if (r[p] + notes[i] == pay[goal]){
                dp[mask] = goal;
                r[mask] = 0;
                break;
            }
            else{
                dp[mask] = dp[p];
                r[mask] = r[p] + notes[i];
            }
            if (dp[mask] == n-1) {
                ans = true;
            }
        }
    }
 
    cout << (ans? "YES" : "NO") << '\n';
}

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