ZOJ 3785

What day is that day?

Input

There are multiple test cases. The first line of input contains an integer
T indicating the number of test cases. For each test case:

There is only one line containing one integer N (1 <= N <= 1000000000).

Output

For each test case, output one string indicating the day of week.

Sample Input

2
1
2

Sample Output

Sunday
Thursday

Hint

A week consists of Sunday, Monday, Tuesday, Wednesday, Thursday, Friday and Saturday.

Source: The 11th Zhejiang Provincial Collegiate Programming Contest

暴力打表找循环节，，发现是294.。

然后直接mod294输出。

#include<cstdio>
#include<iostream>
#include<cstring>
#include<algorithm>
using namespace std;
int num[1000];
char day[10][10] = {"Saturday","Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday"};
int pow(int x)
{
    int ans=1;
    for(int i=1; i<=x; i++)
        ans=(ans*x)%7;
    return ans;
}
int main()
{

    for(int i=1; i<=300; i++)
        num[i]=(pow(i)+num[i-1])%7;
    int T;
    scanf("%d",&T);
    while(T--)
    {
        int n;
        scanf("%d",&n);
        printf("%s\n",day[num[n%294]]);
    }
    return 0;
}

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