#include<bits/stdc++.h>
using namespace std;
int n,k,q,a[5001][5001],op,x,y;
int main(){
    freopen("breeding.in","r",stdin);
    freopen("breeding.out","w",stdout);
    cin>>n>>k>>q;
    for(int i=1;i<=k;i++){
        for(int j=1;j<=n;j++){
            cin>>a[i][j];
        }
    }
    while(q--){
        cin>>op>>x>>y;
        if(op==1){
            k++;
            for(int i=1;i<=n;i++){
                a[k][i]=max(a[x][i],a[y][i]);
            }
        }
        if(op==2){
            k++;
            for(int i=1;i<=n;i++){
                a[k][i]=min(a[x][i],a[y][i]);
            }
        }
        if(op==3){
            cout<<a[x][y]<<"\n";
        }
    }  
}