Submission #170028

#	Time	Username	Problem	Language	Result	Execution time	Memory
170028		itgl	Bank (IZhO14_bank)	C++14	0 / 100	2 ms	384 KiB

bank

#include<bits/stdc++.h>

using namespace std;
int n;
int an[25];
bool check(int pos,int m, int am[]){
  if(n-pos>m) return 0;
  if(pos==n) return 1;
  //cout << n << ' ' << an[pos+1] << endl;

  for(int i=1; i<=an[pos+1]; i++){
    int c=0;
    if(am[i]>0&&am[an[pos+1]-i]>0){
      //cout << am[i] << ' ' <<  am[an[pos+1]-i]<<endl;
      //cout << i << ' ' << an[pos+1]-i << endl;
      am[i]--;
      c++;
      am[an[pos+1]-i]--;
      if(am[i]<0) break;
      //cout << am[i] << endl;
      if(an[pos+1]-i!=0)c++;

      if(check(pos+1,m-c,am)) return 1;
      am[i]++;
      am[an[pos]-i]++;
    }
  }
  return 0;
}

int main(){
  int m;
  cin >> n >> m;
  int am[1005];
  memset(am,0,sizeof(am));
  for(int i=1;i<=n;i++) cin >> an[i];
  for(int i=1;i<=m;i++){
    int tmp;
    cin >> tmp;
    am[tmp]++;
  }
  am[0]=100;
  an[0]=1;
  if(check(0,m,am)) cout << "YES";
  else cout << "NO";


  return 0;
}

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