Submission

Score: 100

User: ChanakanStudy

Problemset: เลขดวง

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-11 22:49:58

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <cmath>
#include <queue>
#include <stack>
#include <climits>
#include <map>
#include <numeric>
#include <iomanip>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int lastday , posday , birthday;
    cin >> lastday >> posday >> birthday;
    int luckyday = 0;
    if(birthday - 7 > 0) {
        luckyday += birthday - 7; 
    }

    if(birthday + 7 <= lastday) {
        luckyday += birthday + 7; 
    }

    if(((birthday + posday -1) % 7 != 0) && (birthday < lastday)) {
        luckyday += birthday + 1;
    }

    if(((birthday + posday - 1) % 7 != 1) && (birthday > 1)) {
        luckyday += birthday - 1;
    }

    cout << luckyday;
    return 0;
}