题解

**#include <iostream>
using namespace std;
int main(){    
	int n;cin>>n;
    	if((1+n)%7==0) cout<<"sunday";
        else if(1+n%7==1) cout<<"monday";
        else if(1+n%7==2) cout<<"tuesday";
        else if(1+n%7==3) cout<<"wednesday";
        else if(1+n%7==4) cout<<"thursday";
        else if(1+n%7==5) cout<<"friday";
        else cout<<"saturday";   
return 0;
}**