#include<iostream> using namespace std; int main(){ int x,n,z,g,m,A=0,B=0,C=0; cin>>n; int jg[4]; jg[1]=1; jg[2]=2; jg[3]=3; for(int i=1;i<n+1;i++){ cin>>m>>z>>g; x=jg[m]; jg[m]=jg[z]; jg[z]=x; if(jg[g]==1) A+=1; if(jg[g]==2) B+=1; if(jg[g]==3) C+=1; } if(A>B&&A>C) cout<<A; if(B>A&&B>C) cout<<B; if(C>B&&C>A) cout<<C; }