2019牛客暑期多校1J题

Bobo has two fractions xaxa and ybyb. He wants to compare them. Find the result.

输入描述:

The input consists of several test cases and is terminated by end-of-file.
Each test case contains four integers x, a, y, b.
* 0≤x,y≤1018 * 1≤a,b≤109 * There are at most 105 test cases.

输出描述:

For each test case, print `=` if x/a=y/b. Print `<` if x/a<y/b. Print `>` otherwise.

#include<bits/stdc++.h>
using namespace std;
#define ll long long
ll x,y,a,b;
int main(){
    while(~scanf("%lld%lld%lld%lld",&x,&a,&y,&b)){
        ll a1=x/a,b1=y/b;
        ll a2=x%a*b,b2=y%b*a;
        if(a1>b1||(a1==b1&&a2>b2))
            puts(">");
        else if(a1<b1||(a1==b1&&a2<b2))
            puts("<");
        else
            puts("=");
    }
}