#include<stdio.h>
int q,x,l,z,y,t[800009],n[800009],o[800009],k[800009]={1};char c[3];main()
{scanf("%d",&q);while(q--){scanf("%d",&x);if(x-1)l--;else{scanf(" %c",c);y=t[l];if(!k[l])t[++l]=y,k[l]=0;else if(*c<')')n[++z]=y,o[z]=0,t[++l]=z,k[l]=1;else if(*c<'|')t[++l]=n[y],k[l]=y&&o[y];else n[++z]=n[y],o[z]=1,t[++l]=z,k[l]=y&&!o[y];}puts(k[l]&&!t[l]?"Yes":"No");}}