zoj_1526 Big Number

题目链接：http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=526

 

//C++代码//log10(n!)=log10(1)+log10(2)+...+log10(n)#include<iostream>#include<cmath>using namespace std;int main(){int t,n,i;cin>>t;while(t--){cin>>n;double sum=0;for(i=2;i<=n;i++) sum+=log10(i);cout<<(int)sum+1<<endl;}return 0;}