题解

方法1：           

#include<bits/stdc++.h>
using namespace std;
int main()
{
	string a[10]={"monday","tuesday","wednesday","thursday","friday","saturday","sunday"};
	int n;
	cin>>n;
	cout<<a[n%7];
	return 0;
} 
方法2：
#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin>>n;
    n%=7;
    if(n == 0) cout<<"monday";
	if(n == 1) cout<<"tuesday";
    if(n == 2) cout<<"wednesday";
    if(n == 3) cout<<"thursday";
    if(n == 4) cout<<"friday";
    if(n == 5) cout<<"saturday";
    if(n ==6 ) cout<<"sunday";
	return 0;
}