#pragma once
#include <stdio.h>

typedef struct {
    int a[5];
    int x;
} record;

static inline int read_record(FILE* stream, record* out)
{
    int result = fscanf(stream, "%d %d %d %d %d %d", &out->a[0], &out->a[1], &out->a[2], &out->a[3], &out->a[4], &out->x);
    if (result == 6) {
        return 0;
    }
    if (result == EOF) {
        return EOF;
    }
    return -2;
}

static inline int g(const record* x)
{
    int out = 0;
    int x_n = 1;
    for (int i = 0; i < 5; i++) {
        out += x->a[i] * x_n;
        x_n *= x->x;
    }
    return out;
}

static inline int compare_records(const void* a, const void* b)
{
    const record* ra = (const record*)a;
    const record* rb = (const record*)b;
    const int ga = g(ra);
    const int gb = g(rb);
    return (ga > gb) - (ga < gb);
}