bzoj1088 [SCOI2005]扫雷Mine

#include<bits/stdc++.h>
#define N 10000
using namespace std;
int n;
int A[N+1];
int f[N+1];
int Ans=0;
int main()
{
scanf("%d",&n);
for(register int i=1;i<=n;i++)scanf("%d",&A[i]);
for(register int i=0;i<=A[1];i++)
{
memset(f,0,sizeof(f));
f[1]=i;
for(register int j=1;j<=n;j++)
f[j+1]=A[j]-f[j]-f[j-1];
Ans+=(f[n+1]==0);
}
cout<<Ans;
return 0;
}