12019 - Doom's Day Algorithm

#include<stdio.h>

int month[13]={0,0,3,3,6,1,4,6,2,5,0,3,5};
char Days[7][10]={"Friday","Saturday","Sunday","Monday","Tuesday","Wednesday","Thursday"};

int main()
{
    register int t,d,m;
    //freopen("in.txt","r",stdin);
    scanf("%d",&t);

    while(t--)
    {
        scanf("%d%d",&m,&d);
        d = (d + month[m]) % 7;
        printf("%s\n",Days[d]);
    }
    return 0;
}