USACO[19-20]Dec银组题解

#include <iostream>
#include <cstdio>
using namespace std;
int n, d;
int a[8] = {14, 1, 2, 4, 7, 8, 11, 13};
int main() {
    freopen("moobuzz.in", "r", stdin);
    freopen("moobuzz.out", "w", stdout);
    cin >> n;
    d = n / 8;
    if (n % 8) {
        cout << d * 15 + a[n % 8];
    } else {
        cout << d * 15 - 1;
    }
    fclose(stdin);
    fclose(stdout);
    return 0;
}