class Solution {
public String solution(int a, int b) {
int[] month = new int[]{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
String[] yoil = new String[]{"FRI", "SAT", "SUN", "MON", "TUE", "WED", "THU"};
int temp = b - 1;
for (int i = 0; i < a - 1; i++) {
temp += month[i];
}
return yoil[temp % 7];
}
}