#include <iostream>
#include<cmath>
int fact(int N)
{
int res = 1;
for(int i=2; i<=N; i++)
{
res = res * i;
}
int res1 = res;
std::cout<<res1<<std::endl;
int res2 = 0;
while (res1>0)
{
res1 = res1 / 10;
res2++;
}
return res2;
}
int main()
{
std::cout<<fact(151);
return 0;
}
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