yukicoder No.287

yukicoder287.cpp

#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <numeric>
#include <functional>
#include <cmath>
#include <queue>
#include <stack>
#include <set>
#include <map>

#define repd(i,a,b) for (int i=(a);i<(b);i++)
#define rep(i,n) repd(i,0,n)
#define var auto
#define mod 1000000007
typedef long long ll;

using namespace std;

int inputValue(){
    int a;
    cin >> a;
    return a;
}

template <typename T>
void output(T a, int precision) {
    if(precision > 0){
        cout << fixed << setprecision(precision)  << a << "\n";
    }
    else{
        cout << a << "\n";
    }
}

// end of template

int main() {
    // source code
    int n = inputValue();
    
    vector<vector<ll>> dp(8, vector<ll>(6 * n + 1, 0));
    rep(i, n + 1){
        dp[0][i] = 1;
    }
    
    repd(i, 1, 8){
        rep(j, 6 * n + 1){
            rep(k, n + 1){
                if (j >= k) {
                     dp[i][j] += dp[i - 1][j - k];
                }
            }
        }
    }
    output(dp[7][6 * n], 0);
    
    return 0;
}