Submission #1248194

#	Time	Username	Problem	Language	Result	Execution time	Memory
1248194		tridang7272	Bank (IZhO14_bank)	C++20	0 / 100	2 ms	840 KiB

bank

#include <bits/stdc++.h>
#define nmax (long long)(1e3+7)
#define oo (long long)(1e9)
#define ll long long
#define ld long double
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
#define pb push_back
#define bignum string
#define mahiru "traluong"
#define shiina_mahiru ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
ll n,m;
vector<ll> a,b;
vector<ll> dp;
vector<vector<ll>> S;
int main()
{
    shiina_mahiru
    if(fopen(mahiru".inp","r"))
    {
        freopen(mahiru".inp","r",stdin);
        freopen(mahiru".out","w",stdout);
    }
    ll sum=0;
    cin>>n>>m;
    a.resize(n);
    b.resize(m);
    for(int i=0;i<n;i++){
        cin>>a[i];sum+=a[i];
    }
    for(int i=0;i<m;i++)
        cin>>b[i];
    S.assign(sum+10,{});
    ll MX=(1<<m);
    for(int mask=0;mask<MX;mask++)
    {
        ll total=0;
        for(int i=0;i<m;i++)
            if((mask>>i)&1) total+=b[i];
        S[total].pb(mask);
    }
    vector<ll> dp(MX,-1);
    dp[0]=0;
    for(int mask=0;mask<MX;mask++)
    {
        if(dp[mask]<0) continue;
        ll total=0;
        for(int i=0;i<m;i++)
            if((mask>>i)&1) total+=b[i];
        int id=dp[mask];
        if(id==n) continue;
        for(int emask:S[a[id]])
        {
            if((emask&mask)>0) continue;
            ll nmask=emask|mask;
            dp[nmask]=max(dp[nmask],dp[mask]+1);
        }
    }
    bool ok=false;
    for(int mask=0;mask<MX;mask++)
         if(dp[mask]==n) {ok=true;break;}
    cout<<(ok?"YES":"NO");
    return 0;
}
//CODE CUA DANGRANGCOM

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:24:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |         freopen(mahiru".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:25:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         freopen(mahiru".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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