HDU 1018 Big Number 数学题

 1 #include<cstdio>
 2 #include<cmath>
 3 #include<cstring>
 4 #include<iostream>
 5 using namespace std;
 6 int n;
 7 int main(){
 8     scanf("%d",&n);
 9     while(n--)
10     {   
11         int t;
12         scanf("%d",&t);
13         int ans=0;
14         double k=0;
15         for (int i=1;i<=t;++i)
16         {
17             k+=log10(i);
18         }
19         ans=(int)k+1;
20         printf("%d\n",ans);
21     }
22     return 0;
23 }