B. Seeing is believing
time limit per test
1 second
memory limit per test
1024 megabytes
input
standard input
output
standard output

Please refer to the statements in the attachment files

Input

Please refer to the statements in the attachment files

Output

Please refer to the statements in the attachment files

Examples
Input
0 1 2
Output
5
Input
63 1 1
Output
67
Note

Please refer to the statements in the attachment files