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  1. #include<cstdio>
  2. #include<string.h>
  3. #include<cmath>
  4.  
  5. #define MAX 5002
  6.  
  7. //using namespace std ; 
  8.  
  9. int main (){
  10.     char str[MAX] ;
  11.     long long int dp[MAX] , i , len  ; 
  12.     while(1) {
  13.         scanf("%s",str) ; 
  14. 	if (*str == '0') 
  15. 	    break ; 
  16. 	len = strlen(str) ;  //getting the length of the string 
  17.  
  18. 	//setting the dp parameters 
  19. 	dp[-1] = 1 ; 
  20. 	/*for (i = 2 ;i<len ; i++){  dp[i] =0 ;} */
  21. 	dp[0] = 1  ; 
  22.  
  23.  
  24. 	for (i = 1 ;i<len ; i++){
  25. 		long long int a = (str[i-1] -'0')*10 + str[i]-'0' ; 
  26. 	    if (str[i]!='0' && str[i-1]!='0' && str[i+1]!='0' &&  a <27)
  27. 	    {
  28. 		dp[i] = dp[i-1] + dp[i-2] ; 
  29. 	    }
  30.  
  31. 	    else 
  32. 		dp[i] = dp[i-1] ; 
  33. 	}
  34.  
  35.  
  36. 	printf("%lld\n",dp[len-1]) ; 
  37.     }
  38. return 0 ; 
  39. }
  40.  
Runtime error #stdin #stdout 0.01s 3100KB
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https://ideone.com/IkNnIv
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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