Go: package main

import "fmt"

func main() {
	days := [12]int{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
	weekday := [7]string{"Wednesday", "Thursday", "Friday", "Saturday", "Sunday", "Monday", "Tuesday"}

	for {
		var m, d int
		fmt.Scan(&m, &d)
		if m == 0 {
			break
		}

		for i := 0; i < m-1; i++ {
			d += days[i]
		}

		fmt.Println(weekday[d%7])
	}
}

C++: #include <iostream>

using namespace std;


int main()
{
    int m[50],d[50];
    int x = 0;
    string Day[7] = {"Thursday", "Friday","Saturday","Sunday","Monday", "Tuesday", "Wednesday"};
    int BanyakHari[12] = {31,29,31,30,31,30,31,31,30,31,30,31};
    string ThatDayIs[50];

    do
    {
        int DayinBetween = 0;
        cin >> m[x] >> d[x];
        if((m[x] == 0) && (d[x] == 0))
        {
            break;
        }
        //Check banyak hari antara 1 Januari - Input
        for(int y = 0; y < m[x]-1; y++)
        {
            DayinBetween = DayinBetween + BanyakHari[y];
        }
        DayinBetween = (DayinBetween + d[x] - 1)%7;


        ThatDayIs[x] = Day[DayinBetween];

        x++;
    }
    while(x < 50);

    for(int z = 0; z < x; z++)
    {
        cout << ThatDayIs[z] << endl;
    }


}

C++: from datetime import date
import calendar

while True:
    m, d = map(int, input().split())
    if not m:
        break
    print(calendar.day_name[date(2004, m, d).weekday()])

C++: #include<stdio.h>
int main(){
	int M,D,Y;
	
	for(;;){
		scanf("%d%d", &M, &D);
		if(M==0 && D==0)break;
		for(;M>1;M--){
			D+=31;
			if(M==12 || M==10 || M==7 || M==5){
				D-=1;
			}
			if(M==3){
				D-=2;
			}
		}
		D%=7;
		switch(D){
			case 0:
				puts("Wednesday");
				break;
			case 1:
				puts("Thursday");
				break;
			case 2:
				puts("Friday");
				break;
			case 3:
				puts("Saturday");
				break;
			case 4:
				puts("Sunday");
				break;
			case 5:
				puts("Monday");
				break;
			case 6:
				puts("Tuesday");
				break;
		}
			
	}
	return 0;
}

C++: #include<iostream>
#define loop(i,a,b) for(int i=a;i<b;i++)
#define rep(i,a) loop(i,0,a)
using namespace std;

void print(int i){
	if(i==0)cout<<"Monday"<<endl;
	if(i==1)cout<<"Tuesday"<<endl;
	if(i==2)cout<<"Wednesday"<<endl;
	if(i==3)cout<<"Thursday"<<endl;
	if(i==4)cout<<"Friday"<<endl;
	if(i==5)cout<<"Saturday"<<endl;
	if(i==6)cout<<"Sunday"<<endl;
	return;
}

int main(){
	int m,d,num=3;
	int season[12]={31,29,31,30,31,30,31,31,30,31,30,31};
	while(cin>>m>>d,m){
		num=3;
		rep(i,m-1)num+=season[i];
		num+=d-1;
		num%=7;
		print(num);
	}
	return 0;
}

C++: #include<stdio.h>

int main(void)
{
	int a=0,b=0,day=0;

	while(day != 10)
	{
		scnaf("%d %d",&a,&b);
		if(a==0 || b ==0)break;
		else if(a==1 || a==4 || a==7)
			day = 3 + b % 7;
		else if(a==2 || a==8)
			day = 6 + b % 7;
		else if(a==3 || a==11)
			day = b % 7;
		else if(a==5)
			day = 5 + b % 7;
		else if(a == 6)
			day = 1 + b % 7;
		else if(a==9 || a==12)
			day = 2 + b % 7;
		else 
			day = 4 + b % 7;
		if(day > 6)
			day-=7;
		switch (day)
		{
		case 1:
			printf("Monday\n");
			break;
		case 2:
			printf("Tuesday\n");
			break;
		case 3:
			printf("Wednesday\n");
			break;
		case 4:
			printf("Thursday\n");
			break;
		case 5:
			printf("Friday\n");
			break;
		case 6:
			printf("Saturday\n");
			break;
		case 0:
			printf("Sunday\n");
			break;
		}
	}
  return 0;
}

C++: #include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <ctime>
using namespace std;

typedef long long ll;
typedef pair<int, int> P;

#define all(c) (c).begin(), (c).end()
#define pb push_back
#define mp make_pair
#define EXIST(v,i) (find(all(v), i) != (v).end())
#define ERASE(v,i) (v).erase(remove(all(v), i), (v).end())
#define INDEX(v,i) (find(all(v), i) - (v).begin())
#define rep(i,n) for(int i = 0; i < (int)n; ++i)
#define debug(x) cerr << #x << " = " << (x) << endl;

inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

const int INF = 100000000;
const double PI = 3.14159265358979323846;
const double EPS = 1e-10;

int main() {
	int days[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
	string week[] = {"Wednexday", "Thursday", "Friday", "Saturday", "Sunday", "Monday", "Tuesday"};
	for(int month, day; cin >> month >> day && month && day;) {
		int sum = 0;
		rep(i,month - 1) {
			sum += days[i];
		}
		sum += day;
		sum %= 7;
		cout << week[sum] << endl;
	}
	return 0;
}

C++: #include <iostream>
#include <string>
using namespace std;

int main(){
	string week[7] = {"Mondey","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"};
	int month[12] = {31,29,31,30,31,30,31,31,30,31,30,31};
	int m,d,cnt,mc;

	while( cin >> m >> d ){
		if(m==0) break;

		mc = 1;
		cnt = 3;
		while(1){
			for(int i=1 ; i <= month[mc-1] ; i++, cnt++){
				if(m==mc && d==i) break;
			}
			if(m==mc) break;
			mc++;
		}
		cout << week[cnt%7] << endl;
	}
	return 0;
}

C++: #include<iostream>
using namespace std;

int day(int month){
	switch(month){
		case 4:
		case 6:
		case 9:
		case 11:
			return 30;
			break;
		case 1:
		case 3:
		case 5:
		case 7:
		case 8:
		case 10:
		case 12:
			return 31;
			break;
		case 2:
			return 29;
			break;
	}
}

int main(){
	int m, d, num;
	while(cin >> m >> d, m || d){
		num = 0;
		for(int i=1; i < m; i++){
			num += day(i);
		}
		num += d;
		switch(num % 7){
			case 1:
				cout << "Thursday" << endl;
				break;
			case 2:
				cout << "Friday" << endl;
				break;
			case 3:
				cout << "Saturday" << endl;
				break;
			case 4:
				cout << "Sunday" << endl;
				break;
			case 5:
				cout << "Monday" << endl;
				break;
			case 6:
				cout << "Tuesday" << endl;
				break;
			case 0:
				cout << "Wednesday" << endl;
		}
	}
}

C++: #include <algorithm>
#include <iostream>
#include <stdio.h>
#include <stack>

using namespace std;

int main(void){
    int month,day,ans;
    while(1){
        cin >> month >> day;
        if(month==0) break;
        if(month==1){
            ans=day;
        }
        if(month==2){
            ans=day+31;
        }
        if(month==3){
            ans=day+60;
        }
        if(month==4){
            ans=day+91;
        }
        if(month==5){
            ans=day+121;
        }
        if(month==6){
            ans=day+152;
        }
        if(month==7){
            ans=day+182;
        }
        if(month==8){
            ans=day+213;
        }
        if(month==9){
            ans=day+244;
        }
        if(month==10){
            ans=day+274;
        }
        if(month==11){
            ans=day+305;
        }
        if(month==12){
            ans=day+366;
        }
        ans=ans%7;
        if(ans==1) cout << "Thursday" << endl;
        if(ans==2) cout << "Frisday" << endl;
        if(ans==3) cout << "Saturday" << endl;
        if(ans==4) cout << "Sunday" << endl;
        if(ans==5) cout << "Monday" << endl;
        if(ans==6) cout << "Tuesday" << endl;
        if(ans==0) cout << "Wednesday" << endl;
    }
    return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int main() {
    int mtod[]={0,31,60,91,121,152,182,213,244,274,305,335};
    string wd[]={"Wednesday","Thursday","Friday","Saturday","Sunday","Monday","Tuesday"};
    while (1) {
        int m,d;
        cin>>m>>d;
        if (m==0)
            break;
        int day=mtod[m-1]+d;
        cout<<wd[day%7]<<endl;
    }
    return 0;
}