View Code of Problem 3888

#include<stdio.h>
#include<math.h>

int main()
{
	int t,n;
	double sum;
	scanf("%d\n", &t);
	while (t--)
	{
		scanf("%d", &n);
		sum = 0;
		for (int i = 1; i <= n; i++)
			sum += log10(i);
		int k = (int)sum;
		printf("%d\n", k + 1);
	}
}