Submission #880939

#	Time	Username	Problem	Language	Result	Execution time	Memory
880939		Younis_Dwai	Bank (IZhO14_bank)	C++14	0 / 100	36 ms	262144 KiB

bank

#include <bits/stdc++.h>
#define int long long
#define in insert
#define F first
#define S second
#define pb push_back
#define endl "\n"
//#define mid (l+r)/2
#define all(v) v.begin(),v.end()
//#define pop pop_back
using namespace std;
const int M=1e9+7;
int n,m;
int a[25],b[25];
int dp[24][3000009];
vector<int> adj[200009];
bool rec(int id , int mask){
    if(dp[id][mask]!=-1) return dp[id][mask];
    else if(id==n) return 1;
    bool c=0;
    for(auto u : adj[a[id]]){
            if((mask&u)) continue ;
            c=max(c,rec(id+1,(mask|u)));
            if(c==1) break;
    }
    return dp[id][mask]=c;
}
int32_t main(){
    freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
    memset(dp,-1,sizeof dp);
    cin>>n>>m;
    for(int i=0;i<n;i++) cin>>a[i];
    for(int i=0;i<m;i++) cin>>b[i];
    for(int mask=1;mask<(1<<m);mask++){
         int sum=0;
         for(int  i=0;i<m;i++){
             if((mask&(1<<i))) sum+=b[i];
         }
         adj[sum].pb(mask);
    }
    if(rec(0,0)==1) cout<<"YES";
    else cout<<"NO";
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'bool rec(long long int, long long int)':
bank.cpp:26:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   26 |     return dp[id][mask]=c;
      |            ~~~~~~~~~~~~^~
bank.cpp: In function 'int32_t main()':
bank.cpp:29:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:29:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
      |                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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