#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define kNumRow 20
#define kNumCol 255
#define kTotal kNumRow *kNumCol
char *getLinePtr(char *buffer, int lineNumber)
{
return (buffer + (lineNumber - 1) * kNumCol);
}
int main()
{
char *buffer = malloc(kTotal);
memset(buffer, 0, kTotal);
scanf("%s", getLinePtr(buffer, 1));
scanf("%s", getLinePtr(buffer, 2));
scanf("%s", getLinePtr(buffer, 3));
printf("line: %s\n", getLinePtr(buffer, 3));
return 0;
}