2019-09-19 18:37:08 +03:00
|
|
|
global n, fib_1, fib_2, fib, i;
|
|
|
|
|
|
2018-04-25 01:06:18 +03:00
|
|
|
n := read ();
|
2018-03-20 20:30:58 +03:00
|
|
|
|
|
|
|
|
fib_1 := 1;
|
|
|
|
|
fib_2 := 1;
|
|
|
|
|
fib := 1;
|
|
|
|
|
|
|
|
|
|
for i := 2, i < n, i := i+1
|
|
|
|
|
do
|
|
|
|
|
fib := fib_1 + fib_2;
|
|
|
|
|
fib_2 := fib_1;
|
|
|
|
|
fib_1 := fib
|
|
|
|
|
od;
|
|
|
|
|
|
|
|
|
|
write (fib)
|
