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  1. #include<iostream>
  2. using namespace std;
  3. int a[10000000];
  4. int main(){
  5. 	long long n,q,b,cnt;
  6. 	cin>>n>>q;
  7. 	for(int i=1;i<=n;i++){a[i]=i;}
  8. 	for(int i=0;i<q;i++){
  9. 		cin>>b;
  10. 		for(int j=1;j<=n;j++){
  11. 			if(a[j]%b==0){
  12. 				a[j]/=b;
  13. 			}
  14. 		}
  15. 	}
  16. 	cnt=0;
  17. 	for(int i=1;i<=n;i++){
  18. 		if(a[i]==1){cnt++;}
  19. 	}
  20. 	cout<<cnt<<endl;
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 42520KB
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https://ideone.com/mtOcDw
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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