Teams（uva11609+組合），teamsuva11609組合
I - Teams
Time Limit:1000MS
Memory Limit:0KB
64bit IO Format:%lld & %llu
Submit Status Practice UVA 11609
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1 #include<stdio.h>
2 #define mod 1000000007
3 #define LL long long
4 LL ppow(LL x,LL n)
5 {
6 LL tp=1;
7 while(n)
8 {
9 if(n&1) tp=tp*x%mod;
10 n>>=1;
11 x=x*x%mod;
12 }
13 return tp;
14 }
15 int main()
16 {
17 int ca=1,T;
18 scanf("%d",&T);
19 LL n;
20 while(ca<=T)
21 {
22 scanf("%lld",&n);
23 printf("Case #%d: %lld\n",ca++,(n*ppow(2,n-1))%mod);
24 }
25 return 0;
26 }
