#D13326. First Search by Foxpower
First Search by Foxpower
First Search by Foxpower
Example
Input
4 1 1 2
Output
6
inputFormat
Input
4 1 1 2
outputFormat
Output
6
样例
4
1 1 26
Example
Input
4 1 1 2
Output
6
Input
4 1 1 2
Output
6
4
1 1 26