#include<bits/stdc++.h> using namespace std; int n; string s; int op[1000005]; int main(){ //freopen("operator.in","r",stdin); //freopen("operator.out","w",stdout); cin>>n>>s; s=" "+s; int cnt =0; for(int i = 1;i<=n;i++){ if(s[i]=='*'||s[i]=='/'){ cnt++; op[i]=cnt; } } for(int i = 1;i<=n;i++){ if(s[i]=='+'||s[i]=='-'){ cnt++; op[i]=cnt; } } for(int i = 1;i<=n;i++){ cout<<s[i]; if(op[i]!=0) printf("[%d]",op[i]); } //fclose(stdin); //fclose(stdout); }