Submission

Status:

Compilation Error

Score: 0

User: kaka

Problemset: โชว์ของโลมา

Language: cpp

Time: 0.000 second

Submitted On: 2025-03-25 07:00:03

#include <bits/stdc++.h>
using namespace std;
#define ll long long

ll solve(ll n, ll last) {
    if (n == 1) return (last + 1) % 10;
    if (n == 2) return (last + 4) % 10 + (last + 3) % 10;
    return solve(n - 2, 4 * n - 4 + last) + (3 * n - 2 + last) % 10 + (3 * n - 1 + last) % 10;
}

int main() {
    ios_base::sync_with_stdio(false),cie.tie(NULL);
    ll n;
    cin >> n;
    cout << solve(n, 0) << endl;
    return 0;
}