Submission

Score: 100

User: matcherbrainner

Problemset: เลขดวง

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-04 11:05:09

#include <bits/stdc++.h>
using namespace std;
int main() {
    int total_days, start_day, birthday;
    cin >> total_days >> start_day >> birthday;
    int col = (start_day - 1 + birthday - 1) % 7 + 1;
    int sum = 0;
    if (birthday - 7 >= 1) sum += birthday - 7;
    if (birthday + 7 <= total_days) sum += birthday + 7;
    if (col > 1 && birthday - 1 >= 1) sum += birthday - 1;
    if (col < 7 && birthday + 1 <= total_days) sum += birthday + 1;
    cout << sum << endl;
}