HDU1018 Big Number

题目链接“：HDU1018

#include<iostream>
#include<cmath>
#include<cstdio>
using namespace std;

int main()
{
    int kase;cin>>kase;
    while(kase--)
    {
        int n;cin>>n;
        double num=0;;
        for(int i=2;i<=n;i++)
            num+=log10(i*1.0);
        cout<<(int)num+1<<endl;
    }
}