#include <bits/stdc++.h>
using namespace std;
int head[20010],to[20010],nxt[20010],cnt = 0; int a[20010],b[20010],req[40010],ans[20010],siz[20010],son[20010],sum,fa[20005];
void add(int u,int v) {
	cnt++; to[cnt] = v;
	nxt[cnt] = head[u];
	head[u] = cnt;
}
void D(int now) {
	siz[now] = 1; for(int i = head[now]; i; i = nxt[i]) {
		int v = to[i]; D(v); siz[now] += siz[v];
		if(!son[now] || siz[son[now]]<siz[v]) son[now] = v;
	}
}
long long dp[18][17005],tmp[17005]; //sigh
void dfs(int now,int dep) {
	if(dep >= 18) exit(0);
	sum ^= a[now]; ans[now] = dp[dep][sum];
	for(int i = head[now]; i; i = nxt[i]) {
		int v = to[i]; if(v == son[now]) continue;
		for(int i = 0; i < 16384; i++) dp[dep+1][i] = min(dp[dep][i],dp[dep][i^a[v]]+b[v]);
		dfs(v,dep+1);
	} if(son[now]) {
		for(int i = 0; i < 16384; i++) tmp[i] = dp[dep][i];
		for(int i = 0; i < 16384; i++) dp[dep][i] = min(tmp[i],tmp[i^a[son[now]]]+b[son[now]]);
		dfs(son[now],dep);
	} sum ^= a[now];
}
char s[10];
signed main() {
	int n,cnt = 0,cur = 0; scanf("%d",&n); for(int i = 1; i <= n; i++) {
		scanf("%s",s+1);
		if(s[1] == 'A') {cnt++; scanf("%d%d",&a[cnt],&b[cnt]); add(fa[cnt] = cur,cnt); cur = cnt;}
		else cur = fa[cur]; req[i] = cur;
	} D(0); memset(dp,0x3f,sizeof(dp)); dp[0][0] = 0; dfs(0,0); for(int i = 1; i <= n; i++) printf("%d\n",ans[req[i]]);
	return 0;
}