Problem 1

Solution of problem 1.

Author: nickedes

#1.py

@@ -0,0 +1,20 @@
+# Enter your code here. Read input from STDIN. Print output to STDOUT
+import sys
+inputs=sys.stdin
+t = int(next(inputs))
+for i in range(t):
+    n = int(next(inputs))
+    three,five,both = 0,0,0
+    if n%3 == 0:
+        three = n/3 - 1
+    else:
+        three = n/3 
+    if n%5 == 0:
+        five = n/5 - 1
+    else:
+        five = n/5
+    if n%15 == 0:
+        both = n/15 - 1
+    else:
+        both = n/15
+    print 3*three*(three+1)/2 + 5*five*(five+1)/2 - 15*both*(both+1)/2