小题解（switch

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,sum;
    cin>>n;
    sum=n%7;
    sum++;
    switch(sum){
        case 1:{
            cout<<"monday"<<endl;
            break;
        }
        case 2:{
            cout<<"tuesday"<<endl;
            break;
        }
        case 3:{
            cout<<"wednesday"<<endl;
            break;
        }
        case 4:{
            cout<<"thursday"<<endl;
            break;
        }
        case 5:{
            cout<<"friday"<<endl;
            break;
        }
        case 6:{
            cout<<"saturday"<<endl;
            break;
        }
        case 7:{
	    cout<<"sunday"<<endl;
            break;
        }
    }
    return 0;
}