mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
24 lines
483 B
C++
24 lines
483 B
C++
#include<iostream>
|
|
#include<algorithm>
|
|
#include<cstring>
|
|
using namespace std;
|
|
int main()
|
|
{
|
|
int n,p,m,t;
|
|
while(cin >> n >> p >> m >> t)
|
|
{
|
|
long long s[110][110];
|
|
memset(s,0,sizeof(s));
|
|
s[0][p] = 1;
|
|
for(int i = 1;i <= m;i++)
|
|
{
|
|
for(int j = 1;j <= n;j++)
|
|
{
|
|
s[i][j] = s[i-1][j-1] + s[i-1][j+1];
|
|
}
|
|
}
|
|
cout << s[m][t] << endl;
|
|
}
|
|
return 0;
|
|
}
|