a/b + c/d

21 2 1 34 3 2 3 Sample Output
5 6
2 1
#include<stdio.h>#include<algorithm>#include<iostream>using namespace std;int gcd(int n,int m){    int t,r;    if(m>n)    {        t=n;n=m;m=t;    }    while(m)    {        r=n%m;        n=m;        m=r;    }    return n;}int main(){    int t;    scanf("%d",&t);    while(t--)    {        int a,b,c,d,m,n;        int k;        scanf("%d%d%d%d",&a,&b,&c,&d);        n=a*d+c*b;        m=b*d;        if(n==m)            printf("1/n");        else            k=gcd(n,m);            printf("%d %d/n",n/k,m/k);    }}