2016년

#include <string>
#include <vector>

using namespace std;

string solution(int a, int b) {
  
    
    int month[]={31,29,31,30,31,30,31,31,30,31,30,31};
    string day[]={"FRI","SAT","SUN","MON","TUE","WED","THU"};
    int total=0;
    
    for(int i=0; i<a-1; i++){
        total+=month[i];
    }
    total+=b-1;
    
    return day[total%7];
}