Submission #1306970

#	Time	Username	Problem	Language	Result	Execution time	Memory
1306970		ng.annhaat	Bank (IZhO14_bank)	C++20	71 / 100	1099 ms	32904 KiB

bank

/*
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*/
//#include <bits/BaoMinhTranc++.h>
#include <bits/stdc++.h>
#define int int64_t
//#define ll int64_t
#define ld long double
#define ii pair<int,int>
#define iii pair<int,ii>
#define fi first
#define se second
#define ALL(x) x.begin(),x.end()
#define ALLr(x) x.rbegin(),x.rend()
#define upgrade ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define name "youreagoodmanarthur"
using namespace std;
const int Max=1<<20;
const int N=23;
const int INF=1e18;
const int MOD=998244353;
const int MOD2=1e9+8;
const int base=26;
const int LOG=20;
template<class X,class Y>
    bool minimize(X& x,const Y& y)
    {
        if(x>y){
            x=y;
            return 1;
        }return 0;
    }
template<class X,class Y>
    bool maximize(X& x,const Y& y)
    {
        if(x<y){
            x=y;
            return 1;
        }return 0;
    }
int n,m;
int a[N],b[N];
bool dp[20][Max];
vector<int> pre[20003];
void solve()
{
    cin>>n>>m;
    for(int i=1;i<=n;i++)cin>>a[i];
    for(int i=0;i<m;i++)cin>>b[i];
    for(int i=1;i<=n;i++)a[i]+=a[i-1];
    for(int mask=1;mask<(1<<m);mask++){
        int s=0;
        for(int i=0;i<m;i++)if(mask>>i&1)s+=b[i];
        pre[s].push_back(mask);
    }
    for(int mask=0;mask<(1<<m);mask++)dp[0][mask]=1;
    for(int i=1;i<=n;i++){
        for(int mask:pre[a[i]])dp[i][mask]=dp[i-1][mask];
        for(int mask=1;mask<(1<<m);mask++)for(int j=0;j<m;j++)if(mask>>j&1)dp[i][mask]|=dp[i][mask^(1<<j)];
    }
    if(dp[n][(1<<m)-1])cout<<"YES";
    else cout<<"NO";
}
void prepare()
{

}
signed main()
{
    upgrade
    if(fopen(name".INP","r")){
        freopen(name".INP","r",stdin);
        freopen(name".OUT","w",stdout);
    }
    prepare();
    int test=1;
//    cin>>test;
    while(test--)solve();
    return 0;
}
/*

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*/

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen(name".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:93:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |         freopen(name".OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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