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  1. #include<iostream>
  2. using namespace std;
  3. int main()
  4. {
  5. 	int i,j,k,l,p=0,n,m,carry=0;
  6. 	char *f,*s;
  7. 	int *ans;
  8. 	cin>>n;
  9. 	cin>>m;
  10. 	f=new char[n+1];
  11. 	cin.ignore();
  12. 	cin.getline(f,n+1);
  13. 	s=new char[m+1];
  14. 	//cin.ignore();
  15. 	cin.getline(s,m+1);
  16. 	ans=new int[m+n+1];
  17. 	for(i=m-1;i>=0;i--)
  18. 	{
  19. 		for(j=n-1,k=p;j>=0;j--,k++)
  20. 			ans[k]+=(s[i]-48)*(f[j]-48);
  21. 		p++;
  22. 	}
  23. 	for(l=0;l<m+n;l++)
  24. 	{
  25. 		ans[l]+=carry;
  26. 		carry=ans[l]/10;
  27. 		ans[l]=ans[l]%10;
  28. 	}
  29. 	for(l=m+n-1;l>=0;l--)
  30. 		cout<<ans[l];
  31. 	return 0;
  32. 	delete [] s;
  33. 	delete [] f;
  34. 	delete [] ans;
  35. }
Success #stdin #stdout 0s 3476KB
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stdin
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3
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stdout
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06534
https://ideone.com/6Rk7at
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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