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  1. #include<bits/stdc++.h>
  2. long long int len;
  3. long long int dp[5001];
  4. char str[5001];
  5. long long int solve(int i)
  6. {
  7. 	if(str[i]=='0')
  8. 		return 0;
  9. 	if(i+1>=len)
  10. 		return 1;
  11. 	if(dp[i])
  12. 		return dp[i];
  13. 	long long int ans=0;
  14. 	ans+=solve(i+1);
  15. 	if(i+1<len && 10*(str[i]-'0')+(str[i+1]-'0')<=26)
  16. 		ans+=solve(i+2);
  17. 	return dp[i]=ans;
  18. }
  19. int main()
  20. {
  21. 	while(1)
  22. 	{
  23. 		scanf("%s",str);
  24. 		if(str[0]=='0')
  25. 			break;
  26. 		memset(dp,0,5001);
  27. 		len=strlen(str);
  28. 		printf("%lld\n",solve(0));
  29. 	}
  30. 	return 0;
  31. }
  32.  
Runtime error #stdin #stdout 0.02s 3188KB
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https://ideone.com/qYpw2x
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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