Dice Combinations

#include <bits/stdc++.h>

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);

    long long n;
    std::cin >> n;

    std::vector<long long> ways(n + 1);
    ways[0] = 1;

    for (long long i = 1; i <= n; i++) {
        ways[i] += ways[i - 1];
        if (i >= 2) ways[i] += ways[i - 2];
        if (i >= 3) ways[i] += ways[i - 3];
        if (i >= 4) ways[i] += ways[i - 4];
        if (i >= 5) ways[i] += ways[i - 5];
        if (i >= 6) ways[i] += ways[i - 6];
        ways[i] %= static_cast<long long>(std::pow(10, 9)) + 7;

    }

    std::cout << ways[n] << std::endl;
    return 0;
}

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