제출 #90684

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
90684		popovicirobert	은행 (IZhO14_bank)	C++14	44 / 100	1077 ms	720 KiB

bank

#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
#define ld long double
// 217
// 44

using namespace std;

int sum[20], a[20], b[20];
int nxt[20], prv[20];
int n, m, first;

void bkt(int pos, int cnt) {
    if(pos == m) {
        if(cnt == n) {
            cout << "YES";
            exit(0);
        }
    }
    else {
        bkt(pos + 1, cnt);
        int i = first;
        while(i < n) {
            if(sum[i] + b[pos] <= a[i]) {
                sum[i] += b[pos];
                int aux = first;
                if(sum[i] == a[i]) {
                    if(i == first) {
                        first = nxt[i];
                    }
                    else {
                        nxt[prv[i]] = nxt[i];
                        prv[nxt[i]] = prv[i];
                    }
                }
                bkt(pos + 1, cnt + (sum[i] == a[i]));
                first = aux;
                if(i != first) {
                    nxt[prv[i]] = i;
                    prv[nxt[i]] = i;
                }
                sum[i] -= b[pos];
            }
            i = nxt[i];
        }
    }
}

int main() {
    //ifstream cin("A.in");
    //ofstream cout("A.out");
    int i;
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cin >> n >> m;
    for(i = 0; i < n; i++) {
        cin >> a[i];
    }
    for(i = 0; i < m; i++) {
        cin >> b[i];
    }
    for(i = 0; i < n; i++) {
        prv[i] = i - 1;
        nxt[i] = i + 1;
    }
    first = 0;
    sort(b, b + m, greater<int>());
    bkt(0, 0);
    cout << "NO";
    //cin.close();
    //cout.close();
    return 0;
}

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