//http://acm.hdu.edu.cn/showproblem.php?pid=5542 #include struct char_reader { FILE* f; char *buf,*p1,*p2; int size; char_reader(FILE* fin,int bufsize=1000000) { f=fin; size=bufsize; p1=p2=0; buf=new char[bufsize]; } inline int operator()() { return p1==p2&&(p2=(p1=buf)+fread(buf,1,size,f),p1==p2)?EOF:*p1++; } }; struct char_writer { FILE* f; char *buf,*p,*end; char_writer(FILE* fout,int bufsize=1000000) { f=fout; buf=new char[bufsize]; p=buf; end=buf+bufsize; } ~char_writer() { fwrite(buf,p-buf,1,f); } inline char operator()(char ch) { return end==p&&(fwrite(buf,end-buf,1,f),p=buf),*p++=ch; } }; char_reader gch(stdin); char_writer wch(stdout); template inline void read(T& t) { t=0; bool f=false; char ch; while(ch=gch(),!((ch>='0'&&ch<='9')||ch=='-')); if(ch=='-') f=true,ch=gch(); t=ch-'0'; while(ch=gch(),ch>='0'&&ch<='9') t=t*10+ch-'0'; if(f) t=-t; } template inline void write(T t) { int stk[20],cnt=0; if(t==0) { wch('0'); return; } if(t<0) { wch('-'); t=-t; } while(t>0) { stk[cnt++]=t%10; t/=10; } while(cnt) wch(stk[--cnt]+'0'); } inline void write(char t) { wch(t); } inline void write(const char *&s) { while(*s) wch(*s++); } #if __cplusplus >= 201103L template inline void read(T& t,Args&... args) { read(t); read(args...); } template inline void write(T t,Args... args) { write(t); write(args...); } #else template inline void read(A_t &a,B_t &b) { read(a); read(b); } template inline void read(A_t &a,B_t &b,C_t &c) { read(a); read(b); read(c); } template inline void read(A_t &a,B_t &b,C_t &c,D_t &d) { read(a); read(b); read(c); read(d); } template inline void write(A_t a,B_t b) { write(a); write(b); } template inline void write(A_t a,B_t b,C_t c) { write(a); write(b); write(c); } template inline void write(A_t a,B_t b,C_t c,D_t d) { write(a); write(b); write(c); write(d); } template inline void write(A_t a,B_t b,C_t c,D_t d,E_t e) { write(a); write(b); write(c); write(d); write(e); } #endif #include #include #include using namespace std; const int mod=1e9+7; const int oo=0x3f3f3f3f; int T,n,m,a[1005],f[1005][1005],c[1005],b[1005],kase; inline void add(int p,int v) { assert(p); for(;p<=n;p+=(p&-p)) (c[p]+=v)%=mod; } inline int ask(int p) { assert(p); int res=0; for(;p;p-=(p&-p)) (res+=c[p])%=mod; return res; } int main() { #ifdef local freopen("pro.in","r",stdin); #endif read(T); while(T-->0) { read(n,m); for(int i=1;i<=n;i++) { read(a[i]); b[i]=a[i]; } sort(b+1,b+1+n); for(int i=1;i<=n;i++) a[i]=lower_bound(b+1,b+1+n,a[i])-b+1; memset(f,0,sizeof(f)); f[0][0]=1; for(int i=1;i<=m;i++) { memset(c,0,sizeof(c)); add(1,f[i-1][0]); for(int j=1;j<=n;j++) { f[i][j]=ask(a[j]-1); add(a[j],f[i-1][j]); } } int res=0; for(int i=1;i<=n;i++) res=(res+f[m][i])%mod; write("Case #",++kase,": ",res,'\n'); } return 0; }