112. ab-ba
time limit per test: 0.25 sec.
memory limit per test: 4096 KB
You are given natural numbers a and b. Find ab-ba.
Input
Input contains numbers a and b (1≤a,b≤100).
Output
Write answer to output.
Sample Input
2 3
Sample Output
-1
112. ab-ba
time limit per test: 0.25 sec.
memory limit per test: 4096 KB
You are given natural numbers a and b. Find ab-ba.
Input
Input contains numbers a and b (1≤a,b≤100).
Output
Write answer to output.
Sample Input
2 3
Sample Output
-1