Degree of two
n degrees of number 2 are written sequentially in a line, i.e. the numbers from 2 to 2n without spaces. Give the value of n.
Specifications
Input
In one line n (1 ≤ n ≤ 1000) degrees of number 2 are written sequentially in a line.
Output
Print n.
Problem information
Time Limit: 1 secondsMemory Limit: 64 MB
Balls for the passed test: 1
Complexity: 30% 227/322
Classes: Simple mathematics
Example
Example input248163264128 |
Example output7 |
| ← Game - 2 (RU) | Problems | N-unit numbers - 2 (RU) → |