Submission #1017128

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017128		daviedu	Bank (IZhO14_bank)	C++17	71 / 100	1055 ms	8636 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 i=0; i<n; i++){
        for (int mask=1; mask<(1<<m); mask++){
            int p=-2;
            int c=-1;
            for (int j=0; j<m; j++){
                if (mask & (1 << j)){
                    if (dp[mask ^ (1 << j)] > p){
                        p = dp[mask ^ (1 << j)];
                        c = j;
                    }
                }
            }
            int d = mask ^ (1 << c);
            int v = r[d] + notes[c];
            if (dp[d] == i) dp[mask] = i, r[mask] = v;
            else if (dp[d] == i-1){
                if (v == pay[i]) dp[mask] = i, r[mask] = 0;
                else dp[mask] = i-1, r[mask] = v;
            }
            if (dp[mask] == n-1) ans = true;
        }
    }
 
    cout << (ans? "YES" : "NO") << '\n';
}

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