#include<cstdio>#include<cmath>#include<stack>#include<cstring>#include<string>#include<iostream>#include<algorithm>using namespace std;int main(){int n,l,i,j,k,cs=1;char a1[3000];int a[3000];while(gets(a1)){if(a1[0]=='-')break;l=strlen(a1);for(i=0;i<l;i++){if(a1[i]=='{')a[i]=1;else if(a1[i]=='}')a[i]=-1;}int sum=0;k=0;for(i=0;i<l;i++){sum+=a[i];if(sum<0){sum=1;k++;}}if(sum>0)k+=sum/2;printf("%d. %dn",cs++,k);}return 0;}
