模拟

#include<iostream>
using namespace std;
int main(){
int n;
cin >> n;
int m=1,d=1;
while (true){
d++;
n++;
if (d == 13&&n%7 == 5) cout << m << endl;
if ((m == 1||m == 3||m == 5|| m== 7||m == 8||m == 10||m == 12)&&d>31){
d=1;
m++;
}
else if ((m == 4 || m == 6||m == 9||m == 11)&&d>30){
d=1;
m++;
}
else if (m==2&&d>28){
d=1;
m++;
}
if (m>12) break;
}
return 0;
}