Answers for "trailing 0 in factorial"

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trailing zeroes in factorial

#include <iostream>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
    cin>>t;
    while(t--)
    {
        int n;
        cin>>n;
        int res=0;
        for(int i=5;i<=n;i=i*5)
        {
            res=res+n/i;
        }
        cout<<res<<endl;
    }
    return 0;
}

Posted by: Guest on June-08-2021

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