#include<bits/stdc++.h>
using namespace std;
int const N=5e3+2;
int const M=5e3+15;
int a[M][N];
int main()
{
    freopen("breeding.in","r",stdin);
    freopen("breeding.out","w",stdout);
    int n,k,q;
    cin>>n>>k>>q;
    for(int i=1;i<=k;i++){
        for(int j=1;j<=n;j++) scanf("%d",&a[i][j]);
    }
    while(q--){
        int op,x,y;
        scanf("%d%d%d",&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]<<endl;
    }
    return 0;
}