题解

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

int main()
{
int n;
cin>>n;

int arr[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
int cnt = 0;
for(int i=1;i<=12;i++){
    if((12+cnt+n) %7  == 5) cout<<i<<endl;
    cnt+=arr[i];
}
         
return 0;

}