DO NOT CTJ PLS

#include <bits/stdc++.h>
#define ll long long
#define db double
#define cr char
#define scd(x) scanf("%d",&x)
#define prd(x) printf("%d",x)
#define prl() printf("\n")
#define prsp() printf(" ")
#define rep(i,x,y) for(int i=x;i<=y;i++)
using namespace std;
ll fanzhendong,duishou；
char defen；
int main(){
    cin>>defen；
    while(defen!='E'){//在E之前
        if(defen=='F') fanzhendong++；
        else duishou++；//简单的计分
        if((fanzhendong>10||duishou>10)&&abs(fanzhendong-duishou)>1){
            cout<<fanzhendong<<':'<<duishou<<endl；
            fanzhendong=0,duishou=0；
        }//判断是否一局结束
        cin>>defen；//输入下一个状态
    }
    if(fanzhendong||duishou) cout<<fanzhendong<<':'<<duishou<<endl；//判断是否一局未结束
	return 0;
}

#include <bits/stdc++.h>
#define ll long long
#define db double
#define cr char
#define scd(x) scanf("%d",&x)
#define prd(x) printf("%d",x)
#define prl() printf("\n")
#define prsp() printf(" ")
#define rep(i,x,y) for(int i=x;i<=y;i++)
using namespace std;
ll fanzhendong,duishou；
char defen；
int main(){
    cin>>defen；
    while(defen!='E'){
        if(defen=='F') fanzhendong++；
        else duishou++；
        if((fanzhendong>10||duishou>10)&&abs(fanzhendong-duishou)>1){
            cout<<fanzhendong<<':'<<duishou<<endl；
            fanzhendong=0,duishou=0；
        }
        cin>>defen；
    }
    if(fanzhendong||duishou) cout<<fanzhendong<<':'<<duishou<<endl；//判断是否一局未结束
	return 0;
}