C++ :

#include<bits/stdc++.h>
using namespace std;
int a[10001],b[10001];
int main(){
	char ch;
	int s1=0,s2=0,s=0;
	while (ch!='E')
	{
		cin>>ch;
		if(ch=='F')s1++;
		else if(ch=='A')s2++;
		if((s1>=11||s2>=11)&&(s1-s2>=2||s2-s1>=2))
		{
			s++;
			a[s]=s1;
			b[s]=s2;
			s1=0;
			s2=0;
		}
		else if(ch=='E')
		{
			s++;
			a[s]=s1;
			b[s]=s2;
			break;
		}
	}
	for (int i=1;i<=s;i++)
	{
		if(a[i]+b[i]!=0)
		{
			cout<<a[i]<<':'<<b[i]<<endl;
		}
		
	}
	return 0;
}