Submission #671751

#	Time	Username	Problem	Language	Result	Execution time	Memory
671751		smartmonky	Bank (IZhO14_bank)	C++14	100 / 100	211 ms	97536 KiB

bank

#include <bits/stdc++.h>
  
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
 
using namespace std;
const int N = 2e6;
vector <int> g[N];
int n, vis[25][N];
void rec(int pos, int v){
	if(pos == n + 1){
		cout <<"YES";
		exit(0);
	}
	vis[pos][v] = 1;
	for(auto to : g[pos]){
		if((v & to) == 0 && !vis[pos + 1][(v ^ to)])
			rec(pos + 1, (v ^ to));
	}
}
main(){
	int m;
	cin >> n >> m;
	vector <int> v(n + 1), a(m + 1);
	for(int i = 1; i <= n; i++){
		cin >> v[i];
	}	
	for(int i = 1; i <= m; i++){
		cin >> a[i];
	}
	for(int i = 1; i < (1 << m); i++){
		int sum = 0;
		for(int j = 0; j < m; j++)
		if(i & (1 << j)){
			sum += a[j + 1];
		}
		//cout << sum << endl;
		for(int j = 1; j <= n; j++){
			if(v[j] == sum)g[j].pb(i);
		}
	}
	rec(1, 0);
	cout << "NO";
}

Compilation message (stderr)

bank.cpp:24:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   24 | main(){
      | ^~~~

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