题解

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

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