Problem L
Description
,输出铺放方案的总数.
例如n=3时,为2× 3方格,骨牌的铺放方案有三种,如下图:
L" title="Problem L">#include
#define maxn 55
using namespace std;
long long ans[maxn],n;
void solve()
{
ans[1]=1;
ans[2]=2;
for(int
i=3;i<=50;i++)
ans[i]=ans[i-1]+ans[i-2];
}
int main()
{
//freopen("in.txt","r",stdin);
solve();
while(~scanf("%lld",&n))
printf("%lld\n",ans[n]);
return
0;
}
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