#include <stdio.h>

int main() {
    int dd,mm,yy,itr,sum=0;
    scanf("%d%d%d",&dd,&mm,&yy);
    for(itr=1900;itr<yy;itr++){
        if(itr%4==0&&itr%100!=0||itr%400==0){
            sum +=366;
        }
        else{
            sum +=365;
        }
    }
    for(itr=1;itr<mm;itr++){
        if(itr==1||itr==3||itr==5||itr==7||itr==8||itr==10||itr==12){
            sum +=31;
        }
        else if(itr==4||itr==6||itr==9||itr==11){
            sum +=30;
        }
        else{
            if(itr%4==0&&itr%100!=0||itr%400==0)
                sum +=29;
            else
                sum +=28;
        }
    }
         sum +=dd;
         switch(sum%7){
             case 0:
             printf("sunday");
             case 1:
             printf("monday");
             case 2:
             printf("tuesday");
             case 3:
             printf("wednesday");
             case 4:
             printf("thursday");
             case 5:
             printf("friday");
             case 6:
             printf("saturday");
             
         }
    return 0;
         
}    
    
return 0;
}