#include<iostream> #include<stack> #include<string> using namespace std; struct Matrix{ int a,b; Matrix(int a=0,int b=0):a(a),b(b){} }m[26]; stack<Matrix>s; int main(){ int n; cin>>n; for(int i=0;i<n;i++){ string name; cin>>name; int k = name[0]-'A'; cin>>m[k].a>>m[k].b; } string expr; while(cin>>expr){ int len = expr.length(); bool error = false; int ans = 0; for(int i=0;i<len;i++){ if(isalpha(expr[i])){ s.push(m[expr[i]-'A']); } else if(expr[i]==')'){ Matrix m2 = s.top();s.pop(); Matrix m1 = s.top();s.pop(); if(m1.b!=m2.a){ error = true; break; } ans += m1.a*m1.b*m2.b; s.push(Matrix(m1.a,m2.b)); } } if(error)printf("error\n");else printf("%d\n",ans); } return 0; }