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  1. #include <stdio.h>
  2. #include <string.h>
  3. int main()
  4. {
  5.     //freopen("11687.txt", "r", stdin);
  6.     int digits[50000], i, ans, len, brk, d, dgt;
  7.     char num[1000009];
  8.     while(gets(num))
  9.     {
  10.         if(strcmp(num, "END")==0)
  11.             break;
  12.         brk=0;
  13.         len=strlen(num);
  14.         digits[1]=len;
  15.         if(num[0]=='1' && num[1]=='\0')
  16.         {
  17.             ans=1;
  18.             brk=1;
  19.         }
  20.         for(i=2;;i++)
  21.         {
  22.             d=digits[i-1];
  23.             dgt=0;
  24.             while(d>0)
  25.             {
  26.                 dgt++;
  27.                 d/=10;
  28.             }
  29.             digits[i]=dgt;
  30.             if(digits[i]==digits[i-1])
  31.             {
  32.                 ans=i;
  33.                 break;
  34.             }
  35.         }
  36.         printf("%d\n",ans);
  37.     }
  38.     return 0;
  39. }
Success #stdin #stdout 0s 4396KB
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stdin
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END
stdout
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https://ideone.com/ebpEfP
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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