#include <stdio.h>
#include <string.h>


int getnum()
{
	char c;
	int i=0;
	while((c=getchar())!='\n'&&c!=' '&&c!=EOF)
		i=i*10+c-'0';
	return i;
}		

int main()
{
	int *arraylength;
	int **array;
	arraylength=(int *)malloc(sizeof(int)*10);
	array=(int **)malloc(sizeof(int *)*10);
	int i,j;
	char c;
	for(i=0;i<10;++i)
	{
		*(arraylength+i)=0;
		*(array+i)=0;
	}
	int arraynum=0;
	while(1)
	{
		c=getchar();
		if(c=='c')
		{
			getchar();
			i=getnum();
			
			*(arraylength+arraynum)=i;
			*(array+arraynum)=malloc(sizeof(int)*i);
			
			for(j=0;j<i;++j)
				*(*(array+arraynum)+j)=getnum();
			++arraynum;

		}
		else if(c=='r')
		{
			getchar();
			int row=getnum();
			
			int column=getnum();
			
			if(row>=arraynum||column>=*(arraylength+row))
				printf("out of bound\n");
			else
				printf("%d\n",*(*(array+row)+column));
		}
		else if(c=='w')
		{
			getchar();
			int row=getnum();
			int column=getnum();
			int num=getnum();
			if(row>=arraynum||column>=*(arraylength+row))
				printf("out of bound\n");
			else
				*(*(array+row)+column)=num;

		}
		else
			break;
	}
	
	for(i=0;*(array+i)!=0;++i)
		free(*(array+i));
	free(arraylength);
	free(array);
	

}