Submission #881237

#	Time	Username	Problem	Language	Result	Execution time	Memory
881237		__Davit__	Bank (IZhO14_bank)	C++17	100 / 100	100 ms	8808 KiB

bank

#include <bits/stdc++.h>

#define ll long long
#define ld long double
#define ff first
#define ss second
#define pb push_back
#define vr(v) v.begin(),v.end()
#define rv(v) v.rbegin(),v.rend()
#define Code ios_base::sync_with_stdio(false);
#define By cin.tie(NULL);
#define Davit cout.tie(NULL);
using namespace std;

//#include "algo/debug.h"
//mt19937 myrand(chrono::steady_clock::now().time_since_epoch().count());
//mt19937_64 myrand(373);
//mt19937 myrand(373);

const int N = 20, M = (1 << N);
int a[N], b[N];
pair<int, int> dp[M];


int main() {
    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 i = 1; i < M; ++i) dp[i] = {-1, 0};

    for (int mask = 1; mask < (1 << m); mask++) {
        for (int i = 0; i < m; i++) {
            if ((mask >> i) & 1) {
                pair<int, int> dpj = dp[mask ^ (1 << i)];
                if (dpj.ff == -1)continue;
                if (dpj.ss + b[i] < a[dpj.ff]) {
                    dp[mask] = {dpj.ff, dpj.ss + b[i]};
                } else if (dpj.ss + b[i] == a[dpj.ff]) {
                    dp[mask] = {dpj.ff + 1, 0};
                }
            }
        }
        if (dp[mask].ff == n) {
            cout << "YES" << endl;
            return 0;
        }
    }
    cout << "NO\n";

}

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