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- /***
- created: 2021-11-20-22.37.09
- ***/
- #include <bits/stdc++.h>
- using namespace std;
- #define ll long long
- #define test int tt; cin>>tt; for(int cs=1;cs<=tt;cs++)
- #define get_lost_idiot return 0
- #define nl '\n'
- ll dp[72][70][110];
- ll n,k;
- ll solve(ll one,ll zero,ll r)
- {
- if((one+zero)==n)
- {
- if(one==zero && r==0) return 1;
- return 0;
- }
- if(dp[one][zero][r]!=-1) return dp[one][zero][r];
- return dp[one][zero][r]=solve(one+1,zero,((r*2)+1)%k)+solve(one,zero+1,(r*2)%k);
- }
- int main()
- {
- ios_base::sync_with_stdio(0);
- cin.tie(0);
- cout.tie(0);
- test
- {
- ll i,j,l;
- cin>>n>>k;
- cout<<"Case "<<cs<<": ";
- if(n%2==1 || k==0)
- {
- cout<<0<<nl;
- }
- else
- {
- memset(dp,-1,sizeof dp);
- cout<<solve(1,0,1%k)<<nl;
- }
- }
- get_lost_idiot;
- }
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