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1026. A107

Time Limit: 1 seconds
Memory Limit:65536KB
Points:2
View Problem Statistics Submit Problem added Undefined

Дано целое число m в интервале (1 < m <= 1000000000).

Найти наибольшее k при котором 4^k < m.

Input

Натуральное число m.

Output

Натуральное число k.

Sample

InputOutput
Пример 1. Вход:
5
Пример 1. Выход:
1
View Problem Statistics Submit Author/source:
Educational Courses / New problems in testing /
980. A-73 1026. 1017. A114a 1050. A114v 1033. A116a
We can all benefit by doing occasional "toy" programs, when artificial restrictions are set up, so that we are forced to push our abilities to the limit. The art of tackling miniproblems with all our energy will sharpen our talents for the real problems. Donald E. Knuth.
time generating 0.359 sec.
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