View Code of Problem 3494

#include<stdio.h>
#include<math.h>
#include<string.h>
#include<stdlib.h>
//#include<algorithm>
//#include <bits/stdc++.h>

int gcd(int a,int b) {
	a=abs(a);
	b=abs(b);
	if(a<b) {
		int temp=a;
		a=b;
		b=temp;
	}
	while(b!=0) {
		int temp=a%b;
		a=b;
		b=temp;
	}
	return a;

}


int main() {
	char str[1000];
	while(gets(str)!=NULL) {
		int a=0,b=0,c=0,d=0;
		int biaoji=0;
		int fuhao;
		for(int i=0; i<strlen(str); i++) {
			if(str[i]=='/' || str[i]=='-' ||str[i]=='+') {
				biaoji++;
				if(str[i]=='-') {
					fuhao=0;
				} else if(str[i]=='+') {
					fuhao=1;
				}
			} else if(biaoji==0) {
				a=a*10+str[i]-'0';
			} else if(biaoji==1) {
				b=b*10+str[i]-'0';
			} else if(biaoji==2) {
				c=c*10+str[i]-'0';
			} else if(biaoji==3) {
				d=d*10+str[i]-'0';
			}
		}
		int resa=a*d;
		int resc=c*b;
		int resb=b*d;
		int resd=d*b;

		if(fuhao==0) {
			resa=resa-resc;
		} else {
			resa=resa+resc;
		}
		if(resa==0) {
			printf("0\n");
		} else if(abs(resa)%abs(resb)==0) {
			printf("%d\n",resa/resb);
		} else {
			printf("%d/%d\n",resa/gcd(resa,resb),resb/gcd(resa,resb));
		}
	}
}