Submission #1119733

#	Time	Username	Problem	Language	Result	Execution time	Memory
1119733		tsengang	Bank (IZhO14_bank)	C++14	44 / 100	1047 ms	508 KiB

bank

#include <bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define all(x) x.begin(), x.end()
#define pb push_back
#define ertunt return
#define vodka void
using namespace std;
ll n,m;
ll a[21];
ll b[21];
bool yes;
bool vis[21];
vodka dfs(ll x){
    if(x > n-1){
        yes = true;
        ertunt;
    }
    for(ll i = 0; i < m; i++){
        if(vis[i] == false){
            if(b[i] <= a[x]){
                a[x]-=b[i];
                vis[i] = true;
                if(a[x] == 0)dfs(x+1);
                else dfs(x);
                vis[i] = false;
                a[x]+=b[i];
            }
        }
    }
}
int main(){
    cin >> n >> m;
    if(n == 1){
        ll d;
        cin >> d;
        ll b[m+1];
        for(ll j = 1; j <= m; j++)cin >> b[j];
        for(ll i = 1; i <= (1<<m); i++){
            ll res = 0;
            for(ll j = 0; j < m; j++){
                if(i&(1<<j)){
                    res+=b[j];
                }
            }
            if(res == d){
                cout << "YES";
                ertunt 0;
            }
        }
        cout << "NO";
        ertunt 0;
    }
    for(ll i = 0; i < n; i++) cin >> a[i];
    for(ll i = 0; i < m; i++) cin >> b[i];
    sort(a,a+n);
    sort(b,b+m);
    dfs(0);
    if(yes)cout << "YES\n";
    else cout << "NO";
}

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