#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main(){
    while(true){
int d;
int m;
int y;
int n;
int data;

printf ("Enter numbers\n");
printf ("d = ");
scanf("%d", &d);
printf ("m = ");
scanf("%d", &m);
printf("y =");
scanf("%d", &y);
data = getchar();




        if((n == 0 || n == 2) && m == 2 && data > 29) {
              printf("year is not leap!\n");
              return 0;
          } else if (n == 0 && m == 2 && data > 28) {
              printf("year is not leap!\n");
              return 0;
          }
              if(m == 1,m == 3,m == 5,m == 7,m == 8,m ==10,m == 12)
             {
                 if (d>31){
                     printf_s("NO CORRECT INPUT");
                 }
             else if(m == 2,m == 6, m == 9, m == 11){
                 if(d>30){
                     printf_s("NO CORRECT INPUT");
                 }
             }

             }
               if(m<=2){
                y = y -1,d = d+3;

             }
             else if(m>12){
                 printf("ERROR NO CORRECT INPUT");
             }
             else if(d>31){
                 printf("ERROR NO CORRECT INPUT");
             }
             if (d==0 || y==0 || m==0){
                 printf("ERROR NO CORRECT INPUT");
             }
              if(m>2){
                  n = 0;
              }

              if (m<=2){
                   if (((y % 100 != 0) && (y % 4 == 0)) || ((y % 100 == 0) && (y % 400 == 0))) {
                          n = 1;
                      }
                  else {
                      n=2;
                  }
              }



 data =  fmod((d + y + y/4 - y/100 + y/400 +(31*m + 10)/12),7);
    switch(data) {
         case 0 :
             printf("Monday\n");
             return 0;
         case 1 :
             printf("Tuesday\n");
             return 0;
         case 2 :
             printf("Wednesday\n");
             return 0;
         case 3 :
             printf("Thursday\n");
             return 0;
         case 4 :
             printf("Friday\n");
             return 0;
         case 5 :
             printf("Saturday\n");
             return 0;
         case 6 :
             printf("Sunday\n");
             return 0;
    }
    return 0;
    }