Project Euler Solutions Added.

Project Euler/Problem 02/sol1.py

@@ -0,0 +1,18 @@
+'''
+Problem:
+Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2,
+the first 10 terms will be:
+                1,2,3,5,8,13,21,34,55,89,..
+By considering the terms in the Fibonacci sequence whose values do not exceed n, find the sum of the even-valued terms.
+e.g. for n=10, we have {2,8}, sum is 10.
+'''
+
+n = int(raw_input().strip())
+i=1; j=2; sum=0
+while(j<=n):
+    if((j&1)==0): #can also use (j%2==0)
+        sum+=j
+    temp=i
+    i=j
+    j=temp+i
+print sum