Submission #39105

#	Time	Username	Problem	Language	Result	Execution time	Memory
39105		Scayre	Bank (IZhO14_bank)	C++14	19 / 100	800 ms	624 KiB

bank

//
// omae wa mou shindeiru.
//

#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,sse3,sse4,popcnt,abm,mmx")

#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>

#define ll long long
#define ull unsigned ll
#define ioi exit(0);

#define f first
#define s second

#define inf (int)1e9 + 7

#define NFS ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);

#define mp make_pair

#define lb(x) lower_bound(x)
#define ub(x) upper_bound(x)

#define pb push_back
#define ppb pop_back

#define endl "\n"

#define in(x) insert(x)

#define sz(x) (int)x.size()

#define all(x) x.begin(),x.end()

#define pw2(x) (1<<x) //2^x

#define sqr(x) ((x) * 1ll * (x))

using namespace std;

const int N = (int)5e5 + 7, MOD = (int)1e9 + 7;

bool ok=0;

int n,m;

int a[N],b[N];

bool u[N];

void rec(int x){
  	if(clock () * 1.0 / CLOCKS_PER_SEC>0.8){
      	cout << "NO" << endl;
      	ioi
    }
	if(x==0){
		cout << "YES" << endl;
		ioi
	}
	for(int i=m;i>=1;i--){
 		if(!u[i] && x-b[i]>=0){
 			u[i]=1;
 			rec(x-b[i]);
 			u[i]=0;
 		}
	}
}

int main(){

	#ifdef IOI2019
		freopen ("in.txt", "r", stdin);
	#endif

	NFS

	cin >> n >> m;

	for(int i=1;i<=n;i++){
		cin >> a[i];
	}

	for(int i=1;i<=m;i++){
		cin >> b[i];
	}

	sort(b+1,b+1+m);

	rec(a[1]);

	cout << "NO" << endl;

	#ifdef IOI2019
		cout << "\nTime Elapsed : " << clock () * 1.0 / CLOCKS_PER_SEC << endl;
	#endif

	ioi
}

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