GUESS THE DAY

• Problem Description

  
  According to Gregorian Calendar, it was Monday on the date 01/01/2001. If any year is input,
  Write a program to display what is the day on the 1st January of this year.
  Input
  
  The first line contains an integer T, total number of testcases. Then follow T lines, each line contains an integer year.
  Output
  
  Display the day on the 1st January of that year in lowercase letter.
  Constraints
  
  1 <=T <=1000
  1900<=A,B,C<=2500
  

• CODING ARENA

• #include <stdio.h>

  #include <math.h>

  int main()

  {

    int t,year,i,count;

    scanf("%d",&t);

    while(t--)

    {count=1;

      scanf("%d",&year);

      for(i=1901;i<=year;i++)

      {

        if((i-1)%400==0)

          count+=2;

        else if((i-1)%100!=0 && (i-1)%4==0)

          count+=2;

        else

          count+=1;

      }

     if(count%7==0)

       printf("sunday\n");

     else if(count%7==1)

       printf("monday\n");

     else if(count%7==2)

       printf("tuesday\n");

     else if(count%7==3)

       printf("wednesday\n");

     else if(count%7==4)

       printf("thursday\n");

     else if(count%7==5)

       printf("friday\n");

     else if(count%7==6)

       printf("saturday\n");

    }

    return 0;

  }

  
  

    

      

      

      

  
  

• Test Case 1

  
  Input (stdin)

  3 
  
  1994
  
  1991
  
  2014
  
  

  Expected Output

  saturday
  
  tuesday
  
  wednesday

• Test Case 2

  
  Input (stdin)

  2
  
  2016
  
  2017
  
  

  Expected Output

  friday
  
  sunday