#include <stdio.h>
int main() {
int n;
scanf("%d",n);
if(n<1||n>7){
printf("Error\n");
}
if(n==1){
printf("Monday\n");
}
if(n==2){
printf("Tuesday\n");
}
if(n==3){
printf("Wednesday\n");
}
if(n==4){
printf("Thursday\n");
}
if(n==5){
printf("Friday\n");
}
if(n==6){
printf("Saturday\n");
}
if(n==7){
printf("Sunday\n");
}
return 0;
}