#include <stdio.h>
#include <limits.h>

#define MAX_CHAR 1000

char buffer [MAX_CHAR+1];
char solution [MAX_CHAR+1];

int main(int argc, char ** argv)
{
        FILE * in;
        int max, min;
        int diff, mindiff = INT_MAX;
        int i;
        /**Grenzen      weather: 7 13
         *              soccer: 44 51*/
        int val [2];

        if (argc != 4) exit (1);
        for (i=0; i< 2; i++) val[i] = atoi(argv[i+2]);


        in = fopen (argv[1],"r");
        if (in == NULL) exit (1);

        while (fgets(buffer, MAX_CHAR, in) != NULL)
        {
                max = atoi(&buffer[val[0]-1]);
                min = atoi(&buffer[val[1]-1]);
                diff = abs(max-min);
                if (diff < mindiff && diff != 0)
                {
                        mindiff = diff;
                        strcpy (solution, buffer);
                }
        }
        printf ("%s\n", solution);
}