#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;
        }
        elseif(itr==4||itr==6||itr==9||itr==11)
            sum+=30;
        
        else{
            if(yy%4==0&&yy%100!=0||yy%400==0){
                sum+=29;
            }
            else
                sum+=28;
        }
    }
    sum+=dd;
    switch(sum%7){
        case 0:
            printf("sunday");
            break;
        case 1:
            printf("monday");
            break;
        case 2:
            printf("tuesday");
            break;
        case 3:
            printf("wednesday");
            break;
        case 4:
            printf("thursday");
            break;
        case 5:
            printf("friday");
            break;
        case 6:
            printf("saturday");
            break;
    }
    return 0;
}