#include <iostream>
using namespace::std;

int main(){
    int m=1,d=0,arr[12]={31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    for (int m=1; m<=12; ++m) {
        for (int d=1; d<=arr[m-1]; ++d) {
            if (m == d/10 + d%10) {
                cout << m << "/" << d/10 << d%10 << endl;
            }
        }
    }
}