OJ Board

Hello
I've got WA, Why?

Here is my solution #include <iostream>
#include<bits/stdc++.h>

using namespace std;
int f91(int x)
{
int a=x;
int count=0;
if(a>=101)
{
a=a-10;
return a;
}
else
{
count++;
a=f91(f91(a+11));
if(a==x&&count==0)
return a;
}
}

int main()
{
int n;
for(int i=0 ...