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| #include <stdio.h> |
| #include <string.h> |
| |
| char str[50000]; |
| unsigned long long DP[50000]; |
| |
| bool init() |
| { |
| scanf("%s", str); |
| |
| if(strcmp(str, "0")==0) |
| return 0; |
| |
| memset(DP, 0, sizeof(DP)); |
| |
| return 1; |
| } |
| |
| |
| inline bool valid(int i, int j) |
| { |
| if(i==j) |
| { |
| if(str[i]=='0') |
| return 0; |
| return 1; |
| } |
| |
| if(str[i]=='0') |
| return 0; |
| |
| if((str[i]-'0')*10 + (str[j]-'0') <=26) |
| return 1; |
| |
| return 0; |
| } |
| |
| int main() |
| { |
| int i; |
| |
| |
| |
| while(init()) |
| { |
| DP[0]=1; |
| |
| if(valid(1, 1)) |
| DP[1]+=DP[0]; |
| if(valid(0, 1)) |
| DP[1]++; |
| |
| for(i=2; i<strlen(str); i++) |
| { |
| if(valid(i, i)) |
| DP[i]+=DP[i-1]; |
| if(valid(i-1, i)) |
| DP[i]+=DP[i-2]; |
| } |
| |
| printf("%lld\n", DP[strlen(str)-1]); |
| } |
| |
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| return 0; |
| } |
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