1027

#include<cstdio>
using namespace std;


char a[13] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C' };


int main1027(){
int R, G, B;
scanf("%d%d%d", &R, &G, &B);


printf("#");
int arr[2] = { 0 };
int i = 0;
do{
arr[i++] = R % 13;
R = R / 13;
} while (R != 0);
for (int j = 1; j >= 0; j--){
printf("%c", a[arr[j]]);


}


i = 0;
do{
arr[i++] = G % 13;
G = G / 13;
} while (G != 0);
for (int j = 1; j >= 0; j--){
printf("%c", a[arr[j]]);


}


i = 0;
do{
arr[i++] = B % 13;
B = B / 13;
} while (B != 0);
for (int j = 1; j >= 0; j--){
printf("%c", a[arr[j]]);
}


return 0;
}