PROBLEM LINK:
Practice
Contest: Division 1
Contest: Division 2
Contest: Division 3
Contest: Division 4
Author:
Tester: sushil2006
Editorialist: iceknight1093
DIFFICULTY:
Cakewalk
PREREQUISITES:
None
PROBLEM:
Chef needs 30 coins to bake a cake, and sells it for 50 coins.
He baked N cakes and sold M of them. How much money did he make?
EXPLANATION:
Baking N cakes, at 30 coins each, costs 30\cdot N coins.
Selling M cakes, at 50 coins each, brings in 50\cdot M coins.
So, Chef made a total of
50\cdot M - 30\cdot N
coins.
TIME COMPLEXITY:
\mathcal{O}(1) per testcase.
CODE:
Editorialist's code (PyPy3)
n, m = map(int, input().split())
print(50*m - 30*n)