return n*(m/a); }
int main(){ char s[N]; inta,b,c,d; intm,n,t;
while(scanf(\ a=s[0]-'0'; b=s[2]-'0'; c=s[4]-'0'; d=s[6]-'0'; m=lcm(b,d); if(s[3]=='+')
n=a*(m/b)+c*(m/d); else
n=a*(m/b)-c*(m/d); t=gcd(m,n); m=m/t; n=n/t; if(n==0) printf(\else if(m==1){ printf(\ } else{ if(m<0){ printf(\ printf(\ printf(\ } else{ printf(\ printf(\ printf(\ } } }
system(\return 0; }