USACO section1.1 ride

/*
ID: vincent63
LANG: C
TASK: ride
*/
#include <stdio.h>
#include<string.h>
int main () {
    FILE *fin  = fopen ("ride.in", "r");
    FILE *fout = fopen ("ride.out", "w");
    
    char a[10];
    char b[10];
    char go[]="GO\n";
    char stay[]="STAY\n";
    int i;
    int sum1=1;
    int sum2=1;
    fgets(a,10,fin);
    fgets(b,10,fin);
    //int len=strlen(a);
    //printf("strlen:%d\n",len);
    for(i=0;i<strlen(a)-1;i++){
        int temp=a[i]-64;
        sum1=temp*sum1;
        //printf("%d\n",temp);
    }
    for(i=0;i<strlen(b)-1;i++){
        int temp=b[i]-64;
        sum2=temp*sum2;
        //printf("%d\n",temp);
    }
    if((sum1%47)==(sum2%47)){
        //printf("go\n");
        fputs(go,fout);
    }else{
        fputs(stay,fout);
    }
    //printf("%s%s\n",a,b);
    
    return 0;
}