#include <stdio.h>
#include <stdlib.h> /* Zbog funkcije exit() */

struct mjerenja {

    float u9, u13, u16, u20;
};




int main() {

    FILE *ulaz = fopen("mjerenja-sarajevo.txt", "r");
    FILE *izlaz = fopen("sarajevo13.txt", "w");

    struct mjerenja m[200];
    int i = 0, br = 0, max, j;

    while(!feof(ulaz)) {

            fscanf(ulaz, "%f %f %f %f", &m[i].u9, &m[i].u13, &m[i].u16, &m[i].u20);

            i++;
            br++;
    }


    for(i = 0; i < br; i++) {

        for(j = i + 1 ;j < br - 1; j++) {

            if(m[i].u13 < m[j].u13) {

                struct mjerenja temp = m[i];
                m[i] = m[j];
                m[j] = temp;

            }


        }

    }

    for(i = 0; i < br - 1; i++) {

        printf("%.1f %.1f %.1f %.1f\n", m[i].u9, m[i].u13, m[i].u16, m[i].u20);

    }


   /* for(i = 0; i < br - 1; i++) {

        printf("%.1f %.1f %.1f %.1f\n", m[i].u9, m[i].u13, m[i].u16, m[i].u20);
    }*/









    return 0;
}