#include<iostream>
#include<cmath>
using namespace std;
const int x = 25,y = 2501;
int n[x*y+1],top = 0;
int w,l;
int main(){
    char ch = getchar();
    while(ch != 'E'){
        if(ch == 'W') n[++top] = 1;
        else n[++top] = 2;
        ch = getchar();
    }
   
    for( int i=1;i<=top;i+=1){
    if(n[i] == 1) w++;
    else l++;
    if(w+l == 11){
        printf("%d:%d\n",w,l);
        w = l = 0;
    }
    }
    printf("%d:%d\n\n",w,l);
    w = l = 0;
    for( int i=1;i<=top;i+=1){
    if(n[i] == 1) w++;
    else l++;
    if(w+l == 21){
        printf("%d:%d\n",w,l);
        w = l = 0;
    }
    }
    printf("%d:%d\n\n",w,l);
    w = l = 0;
}

谁能告诉我错在哪？？？？？？？？？？？？？本人不懂