Dice Summation

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

#define LOOP(i,s,e) for (uint64_t i = (s); i < (e); i++)
#define SCAN(...) if (scanf(__VA_ARGS__) == 0) return EXIT_FAILURE

#define MOD 1000000007

int main() {
    uint64_t n = 0;

    uint64_t tab[6] = {1, 2, 4, 8, 16, 32};

    SCAN("%ld", &n);
    if (n <= 6){
        printf("%ld", tab[n-1]);
        exit(EXIT_SUCCESS);
    }

    n -= 6;
    uint64_t tmp;
    while (n > 0){
        tmp = tab[0] + tab[1] + tab[2] + tab[3] + tab[4] + tab[5];
        tmp = tmp % MOD;
        tab[0] = tab[1];
        tab[1] = tab[2];
        tab[2] = tab[3];
        tab[3] = tab[4];
        tab[4] = tab[5];
        tab[5] = tmp;
        n--;
    }

    printf("%ld", tmp);

    // main algo


    return EXIT_SUCCESS;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED