CP003001.计算日期

#include <iostream>
using namespace std;
int main(){
    int n,a;
    cin>>n;
    a=n%7;
    if (a==1){
        cout<<"tuesday";
    }
    else if(a==2){
        cout<<"wednesday";
    }
    else if(a==3){
        cout<<"thursday";
    }
    else if(a==4){
        cout<<"friday";
    }
    else if(a==5){
        cout<<"saturday";
    }
    else if(a==6){
        cout<<"sunday";
    }
    else if(a==0){
        cout<<"monday";
    }
    return 0;
}