#include <iostream>#include <cstdlib>#include <cstdio>#include <cstring>using namespace std;#define maxn 30struct Matrix{ int x, y;} matrix[maxn];int n, ans;bool error;void input(){ scanf("%d", &n); getchar(); for (int i = 0; i < n; i++) { char ch = getchar(); int a, b; scanf("%d%d", &a, &b); int c = ch - 'A'; matrix[c].x = a; matrix[c].y = b; getchar(); }}Matrix cal(char *st, char * &end){ char *p; Matrix a, b, ret; if (st[0] != '(') { end = st + 1; return matrix[st[0] - 'A']; } a = cal(st + 1, p); b = cal(p, p); end = p + 1; if (a.y != b.x) error = true; ans += a.x * b.x * b.y; ret.x = a.x; ret.y = b.y; return ret;}int main(){ input(); char st[maxn * 100], *p; while (scanf("%s", st) != EOF) { ans = 0; error = false; cal(st, p); if (error) puts("error"); else printf("%dn", ans); } return 0;}
