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

#define MAX 51
#define STEP 10

typedef struct {
        char ime[MAX], prezime[MAX];
        double broj_poena;
} student;

void greska() {
        fprintf(stderr, "-1\n");
        exit(EXIT_FAILURE);
}

int cmp(const void * ptr1, const void * ptr2){
        double x = * (double *) ptr1;
        student *st = (student *) ptr2;
        if(x == st->broj_poena){
                return 0;
        }
        if( x < st->broj_poena){
                return -1;
        }

        return 1;
}

int main(int argc, char const *argv[]) {
        FILE *in = fopen("rezultati.txt", "r");
        if(in == NULL){
                greska();
        }
        int n = STEP;
        student *s = malloc(n*sizeof(student));
        if(s == NULL){
                greska();
        }
        int i = 0;
        while (fscanf(in, "%s %s %lf", s[i].ime, s[i].prezime, &s[i].broj_poena) != EOF) {
                if(s[i].broj_poena < 0){
                        greska();
                }
                i++;
                if(i == n){
                        n+=STEP;
                        s = realloc(s, n*sizeof(student));
                        if(s == NULL){
                                greska();
                        }
                }
        }
        fclose(in);
        n = i;
        double x;
        scanf("%lf", &x);
        if(x < 0){
                greska();
        }
        student *nadjeni = bsearch(&x, s, n, sizeof(student), cmp);

        if(nadjeni == NULL){
                printf("Niko nije ostvario zadati broj poena\n");
        }else{
                printf("%s %s\n", nadjeni->ime, nadjeni->prezime );
        }
        free(s);
        return 0;
}