Update 2-SAT.cpp

Ashishgup1 · web-flow · commit f5b45b6000ed · 2018-06-29T22:58:52.000+05:30
diff --git a/2-SAT.cpp b/2-SAT.cpp
@@ -75,3 +75,5 @@ struct TwoSAT
 Sample Problem 1: https://codeforces.com/contest/228/problem/E
 Sample Solution 1: https://codeforces.com/contest/228/submission/39775751
 
+Sample Problem 2: http://codeforces.com/contest/776/problem/D
+Sample Solution 2: http://codeforces.com/contest/776/submission/39776230
