pat 1088

最新推荐文章于 2020-01-13 18:14:59 发布

andyyang0212

最新推荐文章于 2020-01-13 18:14:59 发布

阅读量379

点赞数

分类专栏： Pat 文章标签： pat

本文链接：https://blog.youkuaiyun.com/andyyang0212/article/details/43908379

版权

Pat 专栏收录该内容

101 篇文章

订阅专栏

#include<stdio.h>

long long gcd(long long a, long long b){
    if (!a)
        return b;
    if (!b)
        return a;
    if (a < 0)
        a = -a;
    if (b < 0)
        b = -b;
    int tmp;
    while (b){
        tmp = a % b;
        a = b;
        b = tmp;
    }
    return a;
}

void print(long long a, long long b){
    if (!b){
        printf("Inf");
        return;
    }
    long long intpart = 0;
    intpart = a / b;
    a = a % b;
    if (a < 0||intpart<0){
        putchar('(');
        if (intpart || !intpart&&!a){
            printf("%lld", intpart);
            a = -a;
            if (a){
                putchar(' ');
                printf("%lld/%lld", a, b);
            }
            a = 0;
        }
        if (a)
            printf("%lld/%lld", a, b);
        putchar(')');
    }
    else {
        if (intpart || !intpart&&!a){
            printf("%lld", intpart);
            if (a){
                putchar(' ');
                printf("%lld/%lld", a, b);
            }
            a = 0;
        }
        if (a)
            printf("%lld/%lld", a, b);
    }
}
int main(){
    freopen("1.in", "r", stdin);
    long long a1, b1, a2, b2, a3, b3;
    scanf("%lld/%lld %lld/%lld", &a1, &b1, &a2, &b2);
    long long g = gcd(a1, b1);
    a1 /= g;
    b1 /= g;
    g = gcd(a2, b2);
    a2 /= g;
    b2 /= g;
    print(a1, b1);
    printf(" + ");
    print(a2, b2);
    printf(" = ");
    b3 = b1*b2/gcd(b1, b2);
    a3 = a1*b3 / b1 + a2*b3 / b2;
    print(a3, b3);
    putchar('\n');
    print(a1, b1);
    printf(" - ");
    print(a2, b2);
    printf(" = ");
    a3 = a1*b3 / b1 - a2*b3 / b2;
    print(a3, b3);
    putchar('\n');
    print(a1, b1);
    printf(" * ");
    print(a2, b2);
    printf(" = ");
    a3 = a1*a2;
    b3 = b1*b2;
    g = gcd(a3, b3);
    a3 /= g;
    b3 /= g;
    print(a3, b3);
    putchar('\n');
    print(a1, b1);
    printf(" / ");
    print(a2, b2);
    printf(" = ");
    a3 = a1*b2;
    b3 = b1*a2;
    if (b3 < 0){
        a3 = -a3;
        b3 = -b3;
    }
    g = gcd(a3, b3);
    a3 /= g;
    b3 /= g;
    print(a3, b3);
    putchar('\n');
    return 0;
}