这可能是暴力强列吧

#include <iostream>
using namespace std;

int main() {
int n;
cin>>n;
if(n%70){
cout<<"monday";
}
if(n%71){
cout<<"tuesday";
}
if(n%72){
cout<<"wednesday";
}
if(n%73){
cout<<"thursday";
}
if(n%74){
cout<<"friday";
}
if(n%75){
cout<<"saturday";
}
if(n%7==6){
cout<<"sunday";
}

return 0;

}