#include<stdio.h>bool leap(int y){if(y%4==0&&y%100!=0||y%4==0)return 1;return 0;}int day(int y,int m){if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)return 31;else if(m==4||m==6||m==9||m==11)return 30;else if(leap(y))return 29;return 28;}int main(){int y,m,d,ans,i;scanf("%d%d%d",&y,&m,&d);d=d-1;for(i=1;i<m;i++)d+=day(y,i);ans=((y+(y-1)/400-(y-1)/100+(y-1)/4)%7+d)%7;char dd[7][11]={"sunday","monday","tuesday","wednesday","thursday","friday","saturday"};printf("%sn",dd[ans]);return 0;}
