mab123456 @ 2024-07-15 18:48:35
#include<bits/stdc++.h>
using namespace std;
int t,ans;
int a[100],b[100];
int yj(int a,int e)
{
int b=1;
for(int i=1;i<=a;i++)
{
b*=i;
}
while(b!=0)
{
int c=b%10;
if(c==e)
ans++;
b/=10;
}
return ans;
}
int main()
{
cin>>t;
for(int i=0;i<t;i++)
{
cin>>a[i]>>b[i];
if(b[i]==0)
cout<<yj(a[i],b[i])-1<<endl;
else
cout<<yj(a[i],b[i])<<endl;;
}
return 0;
}
by PhirainEX @ 2024-07-15 18:55:51