ACM Warmup Contests 3

Crypto Columns	A.pdf	A.in	A.out	A.cpp
Exocenter of a triangle	B.pdf	B.in	B.out	B.cpp
Sum of Consecutive Prime Numbers	C.pdf	C.in	C.out	C.cpp
Parencodings	D.pdf	D.in	D.out	D.cpp