#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(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;
}