#include <iostream>
using namespace std;
#include <math.h>

int main(){
    int thang, soNgay;
    string chuThang;
    cout<<"thang = "; cin>>thang;
    switch (thang){
        case 1:{
            chuThang = "Thang mot";
            soNgay = 31;
            break;
        }
        case 2:{
            chuThang = "Thang hai";
            soNgay = 28;
            break;
        }
        case 3:{
            chuThang = "Thang ba";
            soNgay = 30;
            break;
        }
        case 4:{
            chuThang = "Thang tu";
            soNgay = 31;
            break;
        }
        case 5:{
            chuThang = "Thang nam";
            soNgay = 30;
            break;
        }
        case 6:{
            chuThang = "Thang sau";
            soNgay = 31;
            break;
        }
        case 7:{
            chuThang = "Thang bay";
            soNgay = 30;
            break;
        }
        case 8:{
            chuThang = "Thang tam";
            soNgay = 31;
            break;
        }
        case 9:{
            chuThang = "Thang chin";
            soNgay = 31;
            break;
        }
        case 10:{
            chuThang = "Thang muoi";
            soNgay = 30;
            break;
        }
        case 11:{
            chuThang = "Thang muoi mot";
            soNgay = 31;
            break;
        }
        case 12:{
            chuThang = "Thang muoi hai";
            soNgay = 30;
            break;
        }
    }
    cout<<chuThang<<" co "<<soNgay<<" ngay";
    return 0;
}