Submission #362495

#	Time	Username	Problem	Language	Result	Execution time	Memory
362495		codebuster_10	Bank (IZhO14_bank)	C++17	100 / 100	165 ms	8684 KiB

bank

#include <bits/stdc++.h>

using namespace std ;

#define i64 int64_t // typecast using i64(x)
#define int int64_t 
#define ld long double
#define f(i,a,b) for(int i=a; i<b; ++i)
#define endl '\n'

#define PQ priority_queue
#define LB lower_bound  
#define UB upper_bound
#define fr first
#define sc second

#define all(a) (a).begin(),(a).end()
#define allr(a) (a).rbegin(),(a).rend()
#define sz(x) ((int)(x).size())

//#ifndef ONLINE_JUDGE
template<typename T>
void __p(T a) {
  cout<<a; 
}
template<typename T, typename F>
void __p(pair<T, F> a) {
  cout<<"{";
  __p(a.first);
  cout<<",";
  __p(a.second);
  cout<<"}\n"; 
}
template<typename T>
void __p(std::vector<T> a) {
  cout<<"{";
  for(auto it=a.begin(); it<a.end(); it++)
    __p(*it),cout<<",}\n"[it+1==a.end()]; 
}
template<typename T, typename ...Arg>
void __p(T a1, Arg ...a) {
  __p(a1);
  __p(a...);
}
template<typename Arg1>
void __f(const char *name, Arg1 &&arg1) {
  cout<<name<<" : ";
  __p(arg1);
  cout<<endl;
}
template<typename Arg1, typename ... Args>
void __f(const char *names, Arg1 &&arg1, Args &&... args) {
  int bracket=0,i=0;
  for(;; i++)
    if(names[i]==','&&bracket==0)
      break;
    else if(names[i]=='(')
      bracket++;
    else if(names[i]==')')
      bracket--;
  const char *comma=names+i;
  cout.write(names,comma-names)<<" : ";
  __p(arg1);
  cout<<" | ";
  __f(comma+1,args...);
}
//#endif

void setIO(string s = "") {
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); 
  cin.exceptions(cin.failbit); 
  if(sz(s)){
    freopen((s+".in").c_str(),"r",stdin);
    freopen((s+".out").c_str(),"w",stdout);
  }
}
signed main(){
  setIO() ;
  int N , M ; cin >> N >> M ;
  vector<int> a(N+1,0), b(M) ;
  f(i,1,N+1){ 
    cin >> a[i] ;
    a[i] += a[i-1] ;
  }
  f(i,0,M) cin >> b[i] ;
  int dp[1<<M] ; memset(dp,0,sizeof(dp)) ;
  for(int mask = 1 ; mask < (1<<M) ; mask++){
    int sum = 0 ;
    f(i,0,M) if(mask & (1<<i)) sum += b[i] ;
    f(i,0,M){
      if(mask & (1<<i)){
        if( a[dp[mask^(1<<i)] + 1] == sum){
          dp[mask] = max(dp[mask], dp[mask^(1<<i)] + 1) ;
        }else{
          dp[mask] = max(dp[mask], dp[mask^(1<<i)]) ;
        }
      }
    }
    if(dp[mask] == N){
      cout << "YES" ; exit(0) ;
    }
  }
  cout << "NO" ; exit(0) ;
}

Compilation message (stderr)

bank.cpp: In function 'void setIO(std::string)':
bank.cpp:73:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   73 |     freopen((s+".in").c_str(),"r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:74:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   74 |     freopen((s+".out").c_str(),"w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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