#include<stdio.h> #include<string.h> int main() { int a[30],i,n,t; a[1]=3;a[2]=7; for(i=3;i<=20;i++) a[i]=2*a[i-1]+a[i-2]; scanf("%d",&n); while(n--) { scanf("%d",&t); printf("%d\n",a[t]); } return 0; }
Time
Limit: 3000/1000 MS (Java/Others) Memory Limit:
32768/32768 K (Java/Others)
Total Submission(s):
4923 Accepted Submission(s):
2877
原文：http://www.cnblogs.com/hpuzyf/p/3684682.html