/*

Frane Kurtovic

Junior

V. Gimnazija

*/

#include<cstdio>

using namespace std;

int main(void){

for (int i=0 ; i<5;i++){

int n, a, b;

char s, s1, s2;

scanf("%d %d %d ", &n, &a, &b);

if (n == 1){

scanf("%c", &s);

if (s == 'R')

printf("%d/%d", a, a + b);

if (s == 'B')

printf("%d/%d", b, a + b);

}

if (n == 2){

scanf("%c %c %c", &s, &s1, &s2);

if (s == 'N'){

if (s1 == 'R' && s2 == 'B'){

printf("%d/%d", a * b, (a + b) * (a + b - 1));}

else if (s1 == 'R' && s2 == 'R'){

printf("%d/%d", a * (a - 1), (a + b) * (a + b - 1));}

else if (s1 == 'B' && s2 == 'R'){

printf("%d/%d", b * a, (a + b) * (a + b - 1));}

else if (s1 == 'B' && s2 == 'B'){

printf("%d/%d", b * (b - 1), (a + b) * (a + b - 1));}

} else if (s == 'Y'){

if (s1 == 'R' && s2 == 'B'){

printf("%d/%d", a * b, (a + b) * (a + b));}

else if (s1 == 'R' && s2 == 'R'){

printf("%d/%d", a * (a), (a + b) * (a + b));}

else if (s1 == 'B' && s2 == 'R'){

printf("%d/%d", b * a, (a + b) * (a + b));}

else if (s1 == 'B' && s2 == 'B'){

printf("%d/%d", b * (b), (a + b) * (a + b));}

}

}

printf("\n");

}

return 0;

}