Dice Combinations

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <map>
#include <set>
#include <queue>
#include <cmath>

using namespace std;

using ll  = long long;
using vi  = vector<int>;
using vc = vector<char>;
using vll = vector<long long>;
using vs  = vector<string>;
using vb = vector<bool>;
using vvi  = vector<vector<int>>;
using vvll = vector<vector<long long>>;
using vvc  = vector<vector<char>>;
using vvb  = vector<vector<bool>>;
using pii = pair<int, int>;


#define all(x) (x).begin(), (x).end()
#define pb push_back
#define sz(x) ((int)(x).size())
#define forn(i, n) for (int i = 0; i < (n); ++i)

using namespace std;

int n;

int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  
  cin >> n;
  const int MOD = 1e9 + 7;

  vi dice = {1,2,3,4,5,6};
  vll count(n+1);

  count[0] = 1;
  for (int x = 1; x <= n; x++) {
    for (auto c : dice) {
      if (x-c >= 0) {
       count[x] += count[x-c];
       count[x] %= MOD;
      }
    }
  }

  cout << count[n] << endl;
}

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